M.M. Aggarwal, Z. Ahammed, A.L.S. Angelis, V. Antonenko, V. Arefiev, V. Astakhov, V. Avdeitchikov, T.C. Awes, P.V.K.S. Baba, S.K. Badyal, S. Bathe, B. Batiounia, C. Baumann, T. Bernier, K.B. Bhalla, V.S. Bhatia, C. Blume, D. Bucher, H. Büsching, L. Carlén, S. Chattopadhyay, M.P. Decowski, H. Delagrange, P. Donni, M.R. Dutta Majumdar, K. El Chenawi, A.K. Dubey, K. Enosawa, S. Fokin, V. Frolov, M.S. Ganti, S. Garpman, O. Gavrishchuk, F.J.M. Geurts, T.K. Ghosh, R. Glasow, B. Guskov, H. Å.Gustafsson, H. H.Gutbrod, I. Hrivnacova, M. Ippolitov, H. Kalechofsky, R. Kamermans, K. Karadjev, K. Karpio, B. W. Kolb, I. Kosarev, I. Koutcheryaev, A. Kugler, P. Kulinich, M. Kurata, A. Lebedev, H. Löhner, L. Luquin, D.P. Mahapatra, V. Manko, M. Martin, G. Mart́ınez, A. Maximov, Y. Miake, G.C. Mishra, B. Mohanty, M.-J. Mora, D. Morrison, T. Mukhanova, D. S. Mukhopadhyay, H. Naef, B. K. Nandi, S. K. Nayak, T. K. Nayak, A. Nianine, V. Nikitine, S. Nikolaev, P. Nilsson, S. Nishimura, P. Nomokonov, J. Nystrand, A. Oskarsson, I. Otterlund, S. Pavliouk, T. Peitzmann, D. Peressounko, V. Petracek, S.C. Phatak, W. Pinganaud, F. Plasil, M.L. Purschke, J. Rak, M. Rammler, R. Raniwala, S. Raniwala, N.K. Rao, F. Retiere, K. Reygers, G. Roland, L. Rosselet, I. Roufanov, C. Roy, J.M. Rubio, S.S. Sambyal, R. Santo, S. Sato, H. Schlagheck, H.-R. Schmidt, Y. Schutz, G. Shabratova, T.H. Shah, I. Sibiriak, T. Siemiarczuk, D. Silvermyr, B.C. Sinha, N. Slavine, K. Söderström, G. Sood, S.P. Sørensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, M. Sumbera, T. Svensson, A. Tsvetkov, L. Tykarski, E.C.v.d. Pijll, N.v. Eijndhoven, G.J.v. Nieuwenhuizen, A. Vinogradov, Y.P. Viyogi, A. Vodopianov, S. Vörös, B. Wys louch, G.R. Young 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22 (WA98 Collaboration) 21 University of Panjab, Chandigarh 160014, India 32 Variable Energy Cyclotron Centre, Calcutta 700064, India 43 University of Geneva, CH-1211 Geneva 4,Switzerland 54 RRC “Kurchatov Institute”, RU-123182 Moscow 65 Joint Institute for Nuclear Research, RU-141980 Dubna, Russia 76 Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372, USA 87 University of Jammu, Jammu 180001, India 98 University of Münster, D-48149 Münster, Germany 109 SUBATECH, Ecole des Mines, Nantes, France 1110 University of Rajasthan, Jaipur 302004, Rajasthan, India 1211 University of Lund, SE-221 00 Lund, Sweden 1312 MIT Cambridge, MA 02139 1413 Institute of Physics, Bhubaneswar 751005, India 1514 University of Tsukuba, Ibaraki 305, Japan 1615 Universiteit Utrecht/NIKHEF, NL-3508 TA Utrecht, The Netherlands 1716 KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands 1817 Gesellschaft für Schwerionenforschung (GSI), D-64220 Darmstadt, Germany 1918 Nuclear Physics Institute, CZ-250 68 Rez, Czech Rep. 2019 Institute for Nuclear Studies, 00-681 Warsaw, Poland 2120 University of Tennessee, Knoxville, Tennessee 37966, USA Deceased (Dated: May 17, 2021)

M.M. Aggarwal, Z. Ahammed, A.L.S. Angelis, V. Antonenko, V. Arefiev, V. Astakhov, V. Avdeitchikov, T.C. Awes, P.V.K.S. Baba, S.K. Badyal, S. Bathe, B. Batiounia, T. Bernier, K.B. Bhalla, V.S. Bhatia, C. Blume, D. Bucher, H. Büsching, L. Carlén, S. Chattopadhyay, M.P. Decowski, H. Delagrange, P. Donni, M.R. Dutta Majumdar, K. El Chenawi, A.K. Dubey, K. Enosawa, S. Fokin, V. Frolov, M.S. Ganti, S. Garpman, O. Gavrishchuk, F.J.M. Geurts, T.K. Ghosh, R. Glasow, B. Guskov, H. Å.Gustafsson, H. H.Gutbrod, I. Hrivnacova, M. Ippolitov, H. Kalechofsky, K. Karadjev, K. Karpio, B. W. Kolb, I. Kosarev, I. Koutcheryaev, A. Kugler, P. Kulinich, M. Kurata, A. Lebedev, H. Löhner, L. Luquin, D.P. Mahapatra, V. Manko, M. Martin, G. Mart́ınez, A. Maximov, Y. Miake, G.C. Mishra, B. Mohanty, M.-J. Mora, D. Morrison, T. Mukhanova, D. S. Mukhopadhyay, H. Naef, B. K. Nandi, S. K. Nayak, T. K. Nayak, A. Nianine, V. Nikitine, S. Nikolaev, P. Nilsson, S. Nishimura, P. Nomokonov, J. Nystrand, A. Oskarsson, I. Otterlund, T. Peitzmann, D. Peressounko, V. Petracek, W. Pinganaud, F. Plasil, M.L. Purschke, J. Rak, R. Raniwala, S. Raniwala, N.K. Rao, F. Retiere, K. Reygers, G. Roland, L. Rosselet, I. Roufanov, C. Roy, J.M. Rubio, S.S. Sambyal, R. Santo, S. Sato, H. Schlagheck, H.-R. Schmidt, Y. Schutz, G. Shabratova, T.H. Shah, I. Sibiriak, T. Siemiarczuk, D. Silvermyr, B.C. Sinha, N. Slavine, K. Söderström, G. Sood, S.P. Sørensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, M. Sumbera, T. Svensson, A. Tsvetkov, L. Tykarski, E.C.v.d. Pijll, N.v. Eijndhoven, G.J.v. Nieuwenhuizen, A. Vinogradov, Y.P. Viyogi, A. Vodopianov, S. Vörös, B. Wys louch, G.R. Young (WA98 Collaboration) 1 University of Panjab, Chandigarh 160014, India 2 Variable Energy Cyclotron Centre, Calcutta 700064, India 3 University of Geneva, CH-1211 Geneva 4,Switzerland 4 RRC “Kurchatov Institute”, RU-123182 Moscow 5 Joint Institute for Nuclear Research, RU-141980 Dubna, Russia 6 Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372, USA 7 University of Jammu, Jammu 180001, India 8 University of Münster, D-48149 Münster, Germany 9 SUBATECH, Ecole des Mines, Nantes, France 10 University of Rajasthan, Jaipur 302004, Rajasthan, India 11 University of Lund, SE-221 00 Lund, Sweden 12 MIT Cambridge, MA 02139 13 Institute of Physics, Bhubaneswar 751005, India 14 University of Tsukuba, Ibaraki 305, Japan 15 Universiteit Utrecht/NIKHEF, NL-3508 TA Utrecht, The Netherlands 16 KVI, University of Groningen, NL-9747 AA Groningen, The Netherlands 17 Gesellschaft für Schwerionenforschung (GSI), D-64220 Darmstadt, Germany 18 Nuclear Physics Institute, CZ-250 68 Rez, Czech Rep. 19 Institute for Nuclear Studies, 00-681 Warsaw, Poland and 20 University of Tennessee, Knoxville, Tennessee 37966, USA (Dated: February 14, 2014)

Measurements of direct photon production in p+Pb and p+C collisions at $\sqrt{s_\mathrm{NN}} = 17.4\mathrm{GeV}$ are presented. Upper limits on the direct photon yield as a function of $p_\mathrm{T}$ are derived and compared to the results for Pb+Pb collisions at $\sqrt{s_\mathrm{NN}} = 17.3$ GeV. The production of the $\eta$ meson, which is an important input to the direct photon signal extraction, has been determined in the $\eta \rightarrow 2\gamma$ channel for p+C collisions at $\sqrt{s_\mathrm{NN}} = 17.4\mathrm{GeV}$.

M.M. Aggarwal, Z. Ahammed, A.L.S. Angelis, V. Antonenko, V. Arefiev , V. Astakhov , V. Avdeitchikov , T.C. Awes, P.V.K.S. Baba, S.K. Badyal, S. Bathe, B. Batiounia , T. Bernier, K.B. Bhalla, V.S. Bhatia, C. Blume, D. Bucher, H. Büsching, L. Carlen, S. Chattopadhyay, A.C. Das, M.P. Decowski, P. Donni, A.K. Dubey, M.R. Dutta Majumdar, K. Enosawa, S. Fokin, V. Frolov , M.S. Ganti, S. Garpman, O. Gavrishchuk , F.J.M. Geurts, R. Glasow, B. Guskov , H.A. Gustafsson, H.H. Gutbrod , I. Hrivnacova, M. Ippolitov, H. Kalechofsky, R. Kamermans, K. Karadjev, K. Karpio, B.W. Kolb, I. Kosarev , I. Koutcheryaev, A. Kugler, P. Kulinich, M. Kurata, A. Lebedev, H. Löhner , D.P. Mahapatra, V. Manko, M. Martin, Y. Miake, G.C. Mishra, B. Mohanty, D. Morrison, D.S. Mukhopadhyay, H. Naef, B.K. Nandi, S.K. Nayak, T.K. Nayak, A. Nianine, V. Nikitine , S. Nikolaev, S. Nishimura, P. Nomokov , J. Nystrand, A. Oskarsson, I. Otterlund, S.C. Phatak, S. Pavliouk , T. Peitzmann, V. Petracek, F. Plasil, M.L. Purschke, J. Rak, R. Raniwala, S. Raniwala, N.K. Rao, F. Retiere , K. Reygers, G. Roland, L. Rosselet, I. Roufanov , J.M. Rubio, S.S. Sambyal, R. Santo, S. Sato, H. Schlagheck, H.-R. Schmidt, Y. Schutz , G. Shabratova , I. Sibiriak, T. Siemiarczuk, B.C. Sinha, N. Slavine , K. Söderström, G. Sood, S.P. Sørensen, P. Stankus, G. Stefanek, P. Steinberg, E. Stenlund, M. Sumbera, T. Svensson, M.D. Trivedi, A. Tsvetkov, L. Tykarski, J. Urbahn, N.v. Eijndhoven, G.J.v. Nieuwenhuizen, A. Vinogradov, Y.P. Viyogi, A. Vodopianov , S. Vörös, B. Wyslouch, and G.R. Young

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, 38 J. Alexander, R. Amirikas, L. Aphecetche, S.H. Aronson, R. Averbeck, T.C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K.N. Barish, P.D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, 15 S. Belikov, 15 Y. Berdnikov, S. Bhagavatula, J.G. Boissevain, H. Borel, S. Borenstein, M.L. Brooks, D.S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, 39 J.M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W.C. Chang, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J. Choi, R.K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B.A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E.J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, K.A. Drees, R. du Rietz, A. Durum, D. Dutta, Y.V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, 39 S. Esumi, L. Ewell, D.E. Fields, 39 F. Fleuret, S.L. Fokin, B.D. Fox, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, S.-Y. Fung, S. Garpman, ∗ T.K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J.S. Haggerty, H. Hamagaki, A.G. Hansen, E.P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T.K. Hemmick, J.M. Heuser, M. Hibino, J.C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, 39 V.V. Ikonnikov, K. Imai, 38 D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B.V. Jacak, W.Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B.M. Johnson, S.C. Johnson, K.S. Joo, D. Jouan, S. Kametani, 50 N. Kamihara, 38 J.H. Kang, S.S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D.H. Kim, D.J. Kim, D.W. Kim, E. Kim, G.-B. Kim, H.J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, 39 L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P.J. Kroon, C.H. Kuberg, 27 K. Kurita, Y. Kuroki, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, V. Ladygin, J.G. Lajoie, A. Lebedev, 23 S. Leckey, D.M. Lee, S. Lee, M.J. Leitch, X.H. Li, H. Lim, A. Litvinenko, M.X. Liu, Y. Liu, C.F. Maguire, Y.I. Makdisi, A. Malakhov, V.I. Manko, Y. Mao, 38 G. Martinez, M.D. Marx, H. Masui, F. Matathias, T. Matsumoto, 50 P.L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T.E. Miller, A. Milov, 51 S. Mioduszewski, R.E. Mischke, G.C. Mishra, J.T. Mitchell, A.K. Mohanty, D.P. Morrison, J.M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, 39 S. Nagamiya, J.L. Nagle, T. Nakamura, B.K. Nandi, M. Nara, J. Newby, P. Nilsson, A.S. Nyanin, J. Nystrand, E. O’Brien, C.A. Ogilvie, H. Ohnishi, 38 I.D. Ojha, 3 K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A.P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S.F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R.P. Pisani, F. Plasil, M.L. Purschke, A.K. Purwar, J. Rak, I. Ravinovich, K.F. Read, 46 M. Reuter, K. Reygers, V. Riabov, 40 Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S.S. Ryu, M.E. Sadler, N. Saito, 39 T. Sakaguchi, 50 M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H.D. Sato, 38 S. Sato, 48 S. Sawada, Y. Schutz, V. Semenov, R. Seto, M.R. Shaw, 27 T.K. Shea, T.-A. Shibata, 38 K. Shigaki, 20 T. Shiina, C.L. Silva, D. Silvermyr, 29 K.S. Sim, C.P. Singh, V. Singh, M. Sivertz, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, F. Staley, P.W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, T. Sugitate, J.P. Sullivan, E.M. Takagui, A. Taketani, 39 M. Tamai, K.H. Tanaka, Y. Tanaka, K. Tanida, M.J. Tannenbaum, P. Tarján, J.D. Tepe, 27 T.L. Thomas, J. Tojo, 38 H. Torii, 38 R.S. Towell, I. Tserruya, H. Tsuruoka, S.K. Tuli, H. Tydesjö, N. Tyurin, H.W. van Hecke, J. Velkovska, 44 M. Velkovsky, V. Veszprémi, L. Villatte, A.A. Vinogradov, M.A. Volkov, E. Vznuzdaev, X.R. Wang, Y. Watanabe, 39 S.N. White, F.K. Wohn, C.L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, 39 G.R. Young, I.E. Yushmanov, W.A. Zajc, † C. Zhang, S. Zhou, S.J. Zhou, and L. Zolin

Several hadronic observables have been studied in central 158A GeV Pb+Pb collisions using data measured by the WA98 experiment at CERN: single π and K production, as well as twoand three-pion interferometry. The Wiedemann-Heinz hydrodynamical model has been fitted to the pion spectrum, giving an estimate of the temperature and transverse flow velocity. Bose-Einstein correlations between two identified π have been analysed as a function of kT , using two different parameterizations. The results indicate that the source does not have a strictly boost invariant expansion or spend time in a long-lived intermediate phase. A comparison between data and a hydrodynamical based simulation shows very good agreement for the radii parameters as a function of kT . The pion phase-space density at freeze-out has been measured and agrees well with the Tomás̆ik-Heinz model. A large pion chemical potential close to the condensation limit of mπ seems to be excluded. The threepion Bose-Einstein interferometry shows a substantial contribution of the genuine three-pion correlation, but not quite as large as expected for a fully chaotic and symmetric source.

Neutral pion transverse momentum spectra were measured in $p+\mathrm{C}$ and $p+\mathrm{Pb}$ collisions at $\sqrt{{s}_{NN}}=17.4\text{ }\text{ }\mathrm{GeV}$ at midrapidity ($2.3\ensuremath{\lesssim}{\ensuremath{\eta}}_{\mathrm{lab}}\ensuremath{\lesssim}3.0$) over the range $0.7\ensuremath{\lesssim}{p}_{T}\ensuremath{\lesssim}3.5\text{ }\text{ }\mathrm{GeV}/c$. The spectra are compared to ${\ensuremath{\pi}}^{0}$ spectra measured in $\mathrm{Pb}+\mathrm{Pb}$ collisions at $\sqrt{{s}_{NN}}=17.3\text{ }\text{ }\mathrm{GeV}$ in the same experiment. For a wide range of $\mathrm{Pb}+\mathrm{Pb}$ centralities (${N}_{\mathrm{part}}\ensuremath{\lesssim}300$), the yield of ${\ensuremath{\pi}}^{0}$'s with ${p}_{T}\ensuremath{\gtrsim}2\text{ }\text{ }\mathrm{GeV}/c$ is larger than or consistent with the $p+\mathrm{C}$ or $p+\mathrm{Pb}$ yields scaled with the number of nucleon-nucleon collisions (${N}_{\mathrm{coll}}$), while for central $\mathrm{Pb}+\mathrm{Pb}$ collisions with ${N}_{\mathrm{part}}\ensuremath{\gtrsim}350$, the ${\ensuremath{\pi}}^{0}$ yield is suppressed.

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, 38 J. Alexander, R. Amirikas, L. Aphecetche, S.H. Aronson, R. Averbeck, T.C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K.N. Barish, P.D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, 15 S. Belikov, 15 Y. Berdnikov, S. Bhagavatula, J.G. Boissevain, H. Borel, S. Borenstein, M.L. Brooks, D.S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, 39 J.M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W.C. Chang, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J. Choi, R.K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B.A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E.J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, K.A. Drees, A. Durum, D. Dutta, Y.V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, 39 S. Esumi, L. Ewell, D.E. Fields, 39 F. Fleuret, S.L. Fokin, B.D. Fox, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, S.-Y. Fung, S. Garpman, ∗ T.K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J.S. Haggerty, H. Hamagaki, A.G. Hansen, E.P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T.K. Hemmick, J.M. Heuser, M. Hibino, J.C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, D. Hornback, T. Ichihara, 39 V.V. Ikonnikov, K. Imai, 38 D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B.V. Jacak, W.Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B.M. Johnson, S.C. Johnson, K.S. Joo, D. Jouan, S. Kametani, 50 N. Kamihara, 38 J.H. Kang, S.S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D.H. Kim, D.J. Kim, D.W. Kim, E. Kim, G.-B. Kim, H.J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, 39 L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P.J. Kroon, C.H. Kuberg, 27, ∗ K. Kurita, Y. Kuroki, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, V. Ladygin, J.G. Lajoie, A. Lebedev, 23 S. Leckey, D.M. Lee, S. Lee, M.J. Leitch, X.H. Li, H. Lim, A. Litvinenko, M.X. Liu, Y. Liu, C.F. Maguire, Y.I. Makdisi, A. Malakhov, V.I. Manko, Y. Mao, 38 G. Martinez, M.D. Marx, H. Masui, F. Matathias, T. Matsumoto, 50 P.L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T.E. Miller, A. Milov, 51 S. Mioduszewski, R.E. Mischke, G.C. Mishra, J.T. Mitchell, A.K. Mohanty, D.P. Morrison, J.M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, 39 S. Nagamiya, J.L. Nagle, T. Nakamura, B.K. Nandi, M. Nara, J. Newby, P. Nilsson, A.S. Nyanin, J. Nystrand, E. O’Brien, C.A. Ogilvie, H. Ohnishi, 38 I.D. Ojha, 3 K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A.P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S.F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R.P. Pisani, F. Plasil, M.L. Purschke, A.K. Purwar, J. Rak, I. Ravinovich, K.F. Read, 46 M. Reuter, K. Reygers, V. Riabov, 40 Y. Riabov, G. Roche, A. Romana, ∗ M. Rosati, P. Rosnet, S.S. Ryu, M.E. Sadler, N. Saito, 39 T. Sakaguchi, 50 M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H.D. Sato, 38 S. Sato, 48 S. Sawada, Y. Schutz, V. Semenov, R. Seto, M.R. Shaw, 27 T.K. Shea, T.-A. Shibata, 38 K. Shigaki, 20 T. Shiina, C.L. Silva, D. Silvermyr, 29 K.S. Sim, C.P. Singh, V. Singh, M. Sivertz, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, F. Staley, P.W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, T. Sugitate, J.P. Sullivan, E.M. Takagui, A. Taketani, 39 M. Tamai, K.H. Tanaka, Y. Tanaka, K. Tanida, M.J. Tannenbaum, P. Tarján, J.D. Tepe, 27 T.L. Thomas, J. Tojo, 38 H. Torii, 38 R.S. Towell, I. Tserruya, H. Tsuruoka, S.K. Tuli, H. Tydesjö, N. Tyurin, J. Velkovska, 44 M. Velkovsky, V. Veszprémi, L. Villatte, A.A. Vinogradov, M.A. Volkov, E. Vznuzdaev, X.R. Wang, Y. Watanabe, 39 S.N. White, F.K. Wohn, C.L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, 39 G.R. Young, I.E. Yushmanov, W.A. Zajc, † C. Zhang, S. Zhou, S.J. Zhou, L. Zolin, R. duRietz, and H.W. vanHecke

K. Adcox, S. S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, L. Aphecetche, Y. Arai, S. H. Aronson, R. Averbeck, T.C. Awes, K.N. Barish, P. D. Barnes, J. Barrette, B. Bassalleck, S. Bathe, V. Baublis, A. Bazilevsky, S. Belikov, F. G. Bellaiche, S. T. Belyaev, M. J. Bennett, Y. Berdnikov, S. Botelho, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. Burward-Hoy, S. Butsyk, T. A. Carey, P. Chand, J. Chang, W. C. Chang, L. L. Chavez, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, R. K. Choudhury, T. Christ, T. Chujo, M. S. Chung, P. Chung, V. Cianciolo, B. A. Cole, D. G. D’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, B.V. Dinesh, A. Drees, A. Durum, D. Dutta, K. Ebisu, Y. V. Efremenko, K. El Chenawi, H. En’yo, S. Esumi, L. Ewell, T. Ferdousi, D. E. Fields, S. L. Fokin, Z. Fraenkel, A. Franz, A. D. Frawley, S. -Y. Fung, S. Garpman, T. K. Ghosh, A. Glenn, A. L. Godoi, Y. Goto, S. V. Greene, M. Grosse Perdekamp, S. K. Gupta, W. Guryn, H. -Å. Gustafsson, J. S. Haggerty, H. Hamagaki, A. G. Hansen, H. Hara, E.P. Hartouni, R. Hayano, N. Hayashi, X. He, T. K. Hemmick, J. Heuser, M. Hibino, J. C. Hill, D. S. Ho, K. Homma, B. Hong, A. Hoover, T. Ichihara, K. Imai, M. S. Ippolitov, M. Ishihara, B. V. Jacak, W. Y. Jang, J. Jia, B.M. Johnson, S. C. Johnson, K. S. Joo, S. Kametani, J. H. Kang, M. Kann, S. S. Kapoor, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. J. Kim, H. J. Kim, S. Y. Kim, Y. G. Kim, W. W. Kinnison, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, S. Klinksiek, L. Kochenda, D. Kochetkov, V. Kochetkov, D. Koehler, T. Kohama, A. Kozlov, P. J. Kroon, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J.G. Lajoie, J. Lauret, A. Lebedev, D. M. Lee, M. J. Leitch, X. H. Li, Z. Li, D. J. Lim, M. X. Liu, X. Liu, Z. Liu, C. F. Maguire, J. Mahon, Y. I. Makdisi, V. I. Manko, Y. Mao, S. K. Mark, S. Markacs, G. Martinez, M. D. Marx, A. Masaike, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, M. Merschmeyer, F. Messer, M. Messer, Y. Miake, T.E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J.M. Moss, F. Mühlbacher, M. Muniruzzaman, J. Murata, S. Nagamiya, Y. Nagasaka, J. L. Nagle, Y. Nakada, B.K. Nandi, J. Newby, L. Nikkinen, P. Nilsson, S. Nishimura, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, M. Ono, V. Onuchin, A. Oskarsson, L. Österman, I. Otterlund, K. Oyama, L. Paffrath, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, S. F. Pate, T. Peitzmann, A. N. Petridis, C. Pinkenburg, R. P. Pisani, P. Pitukhin, F. Plasil, M. Pollack, K. Pope, M. L. Purschke, I. Ravinovich, K. F. Read, K. Reygers, V. Riabov, Y. Riabov, M. Rosati, A. A. Rose, S. S. Ryu, N. Saito, A. Sakaguchi, T. Sakaguchi, H. Sako, T. Sakuma, V. Samsonov, T. C. Sangster, R. Santo, H. D. Sato, S. Sato, S. Sawada, B.R. Schlei, Y. Schutz, V. Semenov, R. Seto, T. K. Shea, I. Shein, T. -A. Shibata, K. Shigaki, T. Shiina, Y. H. Shin, I. G. Sibiriak, D. Silvermyr, K. S. Sim, J. Simon-Gillo, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, S. Sorensen, P. W. Stankus, N. Starinsky, P. Steinberg, E. Stenlund, A. Ster, S. P. Stoll, M. Sugioka, T. Sugitate, J.P. Sullivan, Y. Sumi, Z. Sun, M. Suzuki, E. M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, E. Taniguchi, M. J. Tannenbaum, J. Thomas, J. H. Thomas, T. L. Thomas, W. Tian, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, A. A. Tsvetkov, S. K. Tuli, H. Tydesjö, N. Tyurin, T. Ushiroda, H. W. van Hecke, C. Velissaris, J. Velkovska, M. Velkovsky, A. A. Vinogradov, M. A. Volkov, A. Vorobyov, E. Vznuzdaev, H. Wang, Y. Watanabe, S. N. White, C. Witzig, F. K. Wohn, C. L. Woody, W. Xie, K. Yagi, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, Z. Zhang, and S. Zhou

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, 38 J. Alexander, R. Amirikas, L. Aphecetche, S.H. Aronson, R. Averbeck, T.C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K.N. Barish, P.D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, 15 S. Belikov, 15 Y. Berdnikov, S. Bhagavatula, J.G. Boissevain, H. Borel, S. Borenstein, M.L. Brooks, D.S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, 39 J.M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W.C. Chang, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J. Choi, R.K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B.A. Cole, P. Constantin, D.G. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E.J. Desmond, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y.V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, 39 S. Esumi, L. Ewell, D.E. Fields, 39 F. Fleuret, S.L. Fokin, B.D. Fox, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, S.-Y. Fung, S. Garpman, ∗ T.K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J.S. Haggerty, H. Hamagaki, A.G. Hansen, E.P. Hartouni, M. Harvey, R. Hayano, X. He, M. Heffner, T.K. Hemmick, J.M. Heuser, M. Hibino, J.C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, 39 V.V. Ikonnikov, K. Imai, 38 D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B.V. Jacak, W.Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B.M. Johnson, S.C. Johnson, K.S. Joo, D. Jouan, S. Kametani, 50 N. Kamihara, 38 J.H. Kang, S.S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D.H. Kim, D.J. Kim, D.W. Kim, E. Kim, G.-B. Kim, H.J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, 39 L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P.J. Kroon, C.H. Kuberg, 27 K. Kurita, Y. Kuroki, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, V. Ladygin, J.G. Lajoie, A. Lebedev, 23 S. Leckey, D.M. Lee, S. Lee, M.J. Leitch, X.H. Li, H. Lim, A. Litvinenko, M.X. Liu, Y. Liu, C.F. Maguire, Y.I. Makdisi, A. Malakhov, V.I. Manko, Y. Mao, 38 G. Martinez, M.D. Marx, H. Masui, F. Matathias, T. Matsumoto, 50 P.L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T.E. Miller, A. Milov, 51 S. Mioduszewski, R.E. Mischke, G.C. Mishra, J.T. Mitchell, A.K. Mohanty, D.P. Morrison, J.M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, 39 S. Nagamiya, J.L. Nagle, T. Nakamura, B.K. Nandi, M. Nara, J. Newby, P. Nilsson, A.S. Nyanin, J. Nystrand, E. O’Brien, C.A. Ogilvie, H. Ohnishi, 38 I.D. Ojha, 3 K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A.P.T. Palounek, V.S. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S.F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R.P. Pisani, F. Plasil, M.L. Purschke, A.K. Purwar, J. Rak, I. Ravinovich, K.F. Read, 46 M. Reuter, K. Reygers, V. Riabov, 40 Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S.S. Ryu, M.E. Sadler, N. Saito, 39 T. Sakaguchi, 50 M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H.D. Sato, 38 S. Sato, 48 S. Sawada, Y. Schutz, V. Semenov, R. Seto, M.R. Shaw, 27 T.K. Shea, T.-A. Shibata, 38 K. Shigaki, 20 T. Shiina, C.L. Silva, D. Silvermyr, 29 K.S. Sim, C.P. Singh, V. Singh, M. Sivertz, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, F. Staley, P.W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, T. Sugitate, J.P. Sullivan, E.M. Takagui, A. Taketani, 39 M. Tamai, K.H. Tanaka, Y. Tanaka, K. Tanida, M.J. Tannenbaum, P. Tarján, J.D. Tepe, 27 T.L. Thomas, J. Tojo, 38 H. Torii, 38 R.S. Towell, I. Tserruya, H. Tsuruoka, S.K. Tuli, H. Tydesjö, N. Tyurin, H.W. van Hecke, J. Velkovska, 44 M. Velkovsky, L. Villatte, A.A. Vinogradov, M.A. Volkov, E. Vznuzdaev, X.R. Wang, Y. Watanabe, 39 S.N. White, F.K. Wohn, C.L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, 39 G.R. Young, I.E. Yushmanov, W.A. Zajc, † C. Zhang, S. Zhou, 51 and L. Zolin

Neutral pion transverse momentum spectra were measured in p+C and p+Pb collisions at sqrt[S{NN}]=17.4 GeV at midrapidity (2.3 less than or approximately equal eta{lab} less than or approximately equal 3.0) over the range 0.7 less than or approximately equal p{T} less than or approximately equal 3.5 GeV/c. The spectra are compared to pi{0} spectra measured in Pb+Pb collisions at sqrt[S{NN}]=17.3 GeV in the same experiment. For a wide range of Pb+Pb centralities (N{part} less than or approximately equal 300), the yield of pi{0}'s with p{T} greater than or approximately equal 2 GeV/c is larger than or consistent with the p+C or p+Pb yields scaled with the number of nucleon-nucleon collisions (N{coll}), while for central Pb+Pb collisions with N{part}greater than or approximately equal 350, the pi{0} yield is suppressed.

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, 38 J. Alexander, R. Amirikas, L. Aphecetche, S.H. Aronson, R. Averbeck, T.C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K.N. Barish, P.D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, 15 S. Belikov, 15 Y. Berdnikov, S. Bhagavatula, J.G. Boissevain, H. Borel, S. Borenstein, M.L. Brooks, D.S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, 39 J.M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W.C. Chang, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J. Choi, R.K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B.A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E.J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, K.A. Drees, A. Durum, D. Dutta, Y.V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, 39 S. Esumi, L. Ewell, D.E. Fields, 39 F. Fleuret, S.L. Fokin, B.D. Fox, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, S.-Y. Fung, S. Garpman, ∗ T.K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J.S. Haggerty, H. Hamagaki, A.G. Hansen, E.P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T.K. Hemmick, J.M. Heuser, M. Hibino, J.C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, 39 V.V. Ikonnikov, K. Imai, 38 D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B.V. Jacak, W.Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B.M. Johnson, S.C. Johnson, K.S. Joo, D. Jouan, S. Kametani, 50 N. Kamihara, 38 J.H. Kang, S.S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D.H. Kim, D.J. Kim, D.W. Kim, E. Kim, G.-B. Kim, H.J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, 39 L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P.J. Kroon, C.H. Kuberg, 27, ∗ K. Kurita, Y. Kuroki, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, V. Ladygin, J.G. Lajoie, A. Lebedev, 23 S. Leckey, D.M. Lee, S. Lee, M.J. Leitch, X.H. Li, H. Lim, A. Litvinenko, M.X. Liu, Y. Liu, C.F. Maguire, Y.I. Makdisi, A. Malakhov, V.I. Manko, Y. Mao, 38 G. Martinez, M.D. Marx, H. Masui, F. Matathias, T. Matsumoto, 50 P.L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T.E. Miller, A. Milov, 51 S. Mioduszewski, R.E. Mischke, G.C. Mishra, J.T. Mitchell, A.K. Mohanty, D.P. Morrison, J.M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, 39 S. Nagamiya, J.L. Nagle, T. Nakamura, B.K. Nandi, M. Nara, J. Newby, P. Nilsson, A.S. Nyanin, J. Nystrand, E. O’Brien, C.A. Ogilvie, H. Ohnishi, 38 I.D. Ojha, 3 K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A.P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S.F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R.P. Pisani, F. Plasil, M.L. Purschke, A.K. Purwar, J. Rak, I. Ravinovich, K.F. Read, 46 M. Reuter, K. Reygers, V. Riabov, 40 Y. Riabov, G. Roche, A. Romana, ∗ M. Rosati, P. Rosnet, S.S. Ryu, M.E. Sadler, N. Saito, 39 T. Sakaguchi, 50 M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H.D. Sato, 38 S. Sato, 48 S. Sawada, Y. Schutz, V. Semenov, R. Seto, M.R. Shaw, 27 T.K. Shea, T.-A. Shibata, 38 K. Shigaki, 20 T. Shiina, C.L. Silva, D. Silvermyr, 29 K.S. Sim, C.P. Singh, V. Singh, M. Sivertz, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, F. Staley, P.W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, T. Sugitate, J.P. Sullivan, E.M. Takagui, A. Taketani, 39 M. Tamai, K.H. Tanaka, Y. Tanaka, K. Tanida, M.J. Tannenbaum, P. Tarján, J.D. Tepe, 27 T.L. Thomas, J. Tojo, 38 H. Torii, 38 R.S. Towell, I. Tserruya, H. Tsuruoka, S.K. Tuli, H. Tydesjö, N. Tyurin, J. Velkovska, 44 M. Velkovsky, V. Veszprémi, L. Villatte, A.A. Vinogradov, M.A. Volkov, E. Vznuzdaev, X.R. Wang, Y. Watanabe, 39 S.N. White, F.K. Wohn, C.L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, 39 G.R. Young, I.E. Yushmanov, W.A. Zajc, † C. Zhang, S. Zhou, S.J. Zhou, L. Zolin, R. duRietz, and H.W. vanHecke

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, J. Alexander, R. Amirikas, L. Aphecetche, S.H. Aronson, R. Averbeck, T.C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K.N. Barish, P.D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, S. Belikov, Y. Berdnikov, S. Bhagavatula, J.G. Boissevain, H. Borel, S. Borenstein, M.L. Brooks, D.S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J.M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W.C. Chang, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J. Choi, R.K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B.A. Cole, P. Constantin, D.G. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E.J. Desmond, O. Dietzsch, O. Drapier, A. Drees, R. du Rietz, A. Durum, D. Dutta, Y.V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, S. Esumi, L. Ewell, D.E. Fields, F. Fleuret, S.L. Fokin, B.D. Fox, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, S.-Y. Fung, S. Garpman, T.K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J.S. Haggerty, H. Hamagaki, A.G. Hansen, E.P. Hartouni, M. Harvey, R. Hayano, X. He, M. Heffner, T.K. Hemmick, J.M. Heuser, M. Hibino, J.C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, V.V. Ikonnikov, K. Imai, L.D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B.V. Jacak, W.Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B.M. Johnson, S.C. Johnson, K.S. Joo, D. Jouan, S. Kametani, N. Kamihara, J.H. Kang, S.S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D.H. Kim, D.J. Kim, D.W. Kim, E. Kim, G.-B. Kim, H.J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P.J. Kroon, C.H. Kuberg, K. Kurita, Y. Kuroki, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, V. Ladygin, J.G. Lajoie, A. Lebedev, S. Leckey, D.M. Lee, S. Lee, M.J. Leitch, X.H. Li, H. Lim, A. Litvinenko, M.X. Liu, Y. Liu, C.F. Maguire, Y.I. Makdisi, A. Malakhov, V.I. Manko, Y. Mao, G. Martinez, M.D. Marx, H. Masui, F. Matathias, T. Matsumoto, P.L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T.E. Miller, A. Milov, S. Mioduszewski, R.E. Mischke, G.C. Mishra, J.T. Mitchell, A.K. Mohanty, D.P. Morrison, J.M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, S. Nagamiya, J.L. Nagle, T. Nakamura, B.K. Nandi, M. Nara, J. Newby, P. Nilsson, A.S. Nyanin, J. Nystrand, E. O’Brien, C.A. Ogilvie, H. Ohnishi, I.D. Ojha, K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A.P.T. Palounek, V.S. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S.F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R.P. Pisani, F. Plasil, M.L. Purschke, A. Purwar, J. Rak, I. Ravinovich, K.F. Read, M. Reuter, K. Reygers, V. Riabov, Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S.S. Ryu, M.E. Sadler, N. Saito, T. Sakaguchi, M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H.D. Sato, S. Sato, S. Sawada, Y. Schutz, V. Semenov, R. Seto, M.R. Shaw, T.K. Shea, T.-A. Shibata, K. Shigaki, T. Shiina, C.L. Silva, D. Silvermyr, K.S. Sim, C.P. Singh, V. Singh, M. Sivertz, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, F. Staley, P.W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, T. Sugitate, J.P. Sullivan, E.M. Takagui, A. Taketani, M. Tamai, K.H. Tanaka, Y. Tanaka, K. Tanida, M.J. Tannenbaum, P. Tarján, J.D. Tepe, T.L. Thomas, J. Tojo, H. Torii, R.S. Towell, I. Tserruya, H. Tsuruoka, S.K. Tuli, H. Tydesjö, N. Tyurin, H.W. van Hecke, J. Velkovska, M. Velkovsky, L. Villatte, A.A. Vinogradov, M.A. Volkov, E. Vznuzdaev, X.R. Wang, Y. Watanabe, S.N. White, F.K. Wohn, C.L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, G.R. Young, I.E. Yushmanov, W.A. Zajc, C. Zhang, S. Zhou, L. Zolin, (PHENIX Collaboration) Abilene Christian University, Abilene, TX 79699, USA Institute of Physics, Academia Sinica, Taipei 11529, Taiwan Department of Physics, Banaras Hindu University, Varanasi 221005, India Bhabha Atomic Research Centre, Bombay 400 085, India Brookhaven National Laboratory, Upton, NY 11973-5000, USA University of California Riverside, Riverside, CA 92521, USA China Institute of Atomic Energy (CIAE), Beijing, People’s Republic of China Center for Nuclear Study, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan Columbia University, New York, NY 10027 and Nevis Laboratories, Irvington, NY 10533, USA Dapnia, CEA Saclay, Bat. 703, F-91191, Gif-sur-Yvette, France

K. Adcox, S. S. Adler, N. N. Ajitanand, Y. Akiba, J. Alexander, L. Aphecetche, Y. Arai, S. H. Aronson, R. Averbeck, T.C. Awes, K.N. Barish, P. D. Barnes, J. Barrette, B. Bassalleck, S. Bathe, V. Baublis, A. Bazilevsky, S. Belikov, F. G. Bellaiche, S. T. Belyaev, M. J. Bennett, Y. Berdnikov, S. Botelho, M. L. Brooks, D. S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, J. Burward-Hoy, S. Butsyk, T. A. Carey, P. Chand, J. Chang, W. C. Chang, L. L. Chavez, S. Chernichenko, C. Y. Chi, J. Chiba, M. Chiu, R. K. Choudhury, T. Christ, T. Chujo, M. S. Chung, P. Chung, V. Cianciolo, B. A. Cole, D. G. D’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E. J. Desmond, O. Dietzsch, B.V. Dinesh, A. Drees, A. Durum, D. Dutta, K. Ebisu, Y. V. Efremenko, K. El Chenawi, H. En’yo, S. Esumi, L. Ewell, T. Ferdousi, D. E. Fields, S. L. Fokin, Z. Fraenkel, A. Franz, A. D. Frawley, S. -Y. Fung, S. Garpman, T.K. Ghosh, A. Glenn, A. L. Godoi, Y. Goto, S. V. Greene, M. Grosse Perdekamp, S. K. Gupta, W. Guryn, H. -Å. Gustafsson, T. Hachiya, J. S. Haggerty, H. Hamagaki, A. G. Hansen, H. Hara, E.P. Hartouni, R. Hayano, N. Hayashi, X. He, T. K. Hemmick, J. M. Heuser, M. Hibino, J. C. Hill, D. S. Ho, K. Homma, B. Hong, A. Hoover, T. Ichihara, K. Imai, M. S. Ippolitov, M. Ishihara, B. V. Jacak, W. Y. Jang, J. Jia, B. M. Johnson, S. C. Johnson, K. S. Joo, S. Kametani, J.H. Kang, M. Kann, S. S. Kapoor, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D. J. Kim, H. J. Kim, S. Y. Kim, Y. G. Kim, W. W. Kinnison, E. Kistenev, A. Kiyomichi, C. Klein-Boesing, S. Klinksiek, L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, D. Kotchetkov, A. Kozlov, P. J. Kroon, K. Kurita, M. J. Kweon, Y. Kwon, G. S. Kyle, R. Lacey, J.G. Lajoie, J. Lauret, A. Lebedev, D. M. Lee, M. J. Leitch, X. H. Li, Z. Li, D. J. Lim, M. X. Liu, X. Liu, Z. Liu, C. F. Maguire, J. Mahon, Y. I. Makdisi, V. I. Manko, Y. Mao, S. K. Mark, S. Markacs, G. Martinez, M. D. Marx, A. Masaike, F. Matathias, T. Matsumoto, P. L. McGaughey, E. Melnikov, M. Merschmeyer, F. Messer, M. Messer, Y. Miake, T. E. Miller, A. Milov, S. Mioduszewski, R. E. Mischke, G. C. Mishra, J. T. Mitchell, A. K. Mohanty, D. P. Morrison, J.M. Moss, F. Mühlbacher, M. Muniruzzaman, J. Murata, S. Nagamiya, Y. Nagasaka, J. L. Nagle, Y. Nakada, B. K. Nandi, J. Newby, L. Nikkinen, P. Nilsson, S. Nishimura, A. S. Nyanin, J. Nystrand, E. O’Brien, C. A. Ogilvie, H. Ohnishi, I. D. Ojha, M. Ono, V. Onuchin, A. Oskarsson, L. Österman, I. Otterlund, K. Oyama, L. Paffrath, A. P.T. Palounek, V. S. Pantuev, V. Papavassiliou, S. F. Pate, T. Peitzmann, A. N. Petridis, C. Pinkenburg, R. P. Pisani, P. Pitukhin, F. Plasil, M. Pollack, K. Pope, M. L. Purschke, I. Ravinovich, K. F. Read, K. Reygers, V. Riabov, Y. Riabov, M. Rosati, A. A. Rose, S. S. Ryu, N. Saito, A. Sakaguchi, T. Sakaguchi, H. Sako, T. Sakuma, V. Samsonov, T.C. Sangster, R. Santo, H. D. Sato, S. Sato, S. Sawada, B. R. Schlei, Y. Schutz, V. Semenov, R. Seto, T. K. Shea, I. Shein, T. -A. Shibata, K. Shigaki, T. Shiina, Y. H. Shin, I. G. Sibiriak, D. Silvermyr, K.S. Sim, J. Simon-Gillo, C. P. Singh, V. Singh, M. Sivertz, A. Soldatov, R. A. Soltz, S. Sorensen, P.W. Stankus, N. Starinsky, P. Steinberg, E. Stenlund, A. Ster, S. P. Stoll, M. Sugioka, T. Sugitate, J.P. Sullivan, Y. Sumi, Z. Sun, M. Suzuki, E.M. Takagui, A. Taketani, M. Tamai, K. H. Tanaka, Y. Tanaka, E. Taniguchi, M. J. Tannenbaum, J. Thomas, J.H. Thomas, T.L. Thomas, W. Tian, J. Tojo, H. Torii, R. S. Towell, I. Tserruya, H. Tsuruoka, A. A. Tsvetkov, S. K. Tuli, H. Tydesjö, N. Tyurin, T. Ushiroda, H. W. van Hecke, C. Velissaris, J. Velkovska, M. Velkovsky, A. A. Vinogradov, M. A. Volkov, A. Vorobyov, E. Vznuzdaev, H. Wang, Y. Watanabe, S. N. White, C. Witzig, F. K. Wohn, C. L. Woody, W. Xie, K. Yagi, S. Yokkaichi, G. R. Young, I. E. Yushmanov, W. A. Zajc, Z. Zhang, and S. Zhou

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, 38 J. Alexander, R. Amirikas, L. Aphecetche, S.H. Aronson, R. Averbeck, T.C. Awes, R. Azmoun, V. Babintsev, A. Baldisseri, K.N. Barish, P.D. Barnes, B. Bassalleck, S. Bathe, S. Batsouli, V. Baublis, A. Bazilevsky, 15 S. Belikov, 15 Y. Berdnikov, S. Bhagavatula, J.G. Boissevain, H. Borel, S. Borenstein, M.L. Brooks, D.S. Brown, N. Bruner, D. Bucher, H. Buesching, V. Bumazhnov, G. Bunce, 39 J.M. Burward-Hoy, S. Butsyk, X. Camard, J.-S. Chai, P. Chand, W.C. Chang, S. Chernichenko, C.Y. Chi, J. Chiba, M. Chiu, I.J. Choi, J. Choi, R.K. Choudhury, T. Chujo, V. Cianciolo, Y. Cobigo, B.A. Cole, P. Constantin, D. d’Enterria, G. David, H. Delagrange, A. Denisov, A. Deshpande, E.J. Desmond, A. Devismes, O. Dietzsch, O. Drapier, A. Drees, K.A. Drees, R. du Rietz, A. Durum, D. Dutta, Y.V. Efremenko, K. El Chenawi, A. Enokizono, H. En’yo, 39 S. Esumi, L. Ewell, D.E. Fields, 39 F. Fleuret, S.L. Fokin, B.D. Fox, Z. Fraenkel, J.E. Frantz, A. Franz, A.D. Frawley, S.-Y. Fung, S. Garpman, ∗ T.K. Ghosh, A. Glenn, G. Gogiberidze, M. Gonin, J. Gosset, Y. Goto, R. Granier de Cassagnac, N. Grau, S.V. Greene, M. Grosse Perdekamp, W. Guryn, H.-Å. Gustafsson, T. Hachiya, J.S. Haggerty, H. Hamagaki, A.G. Hansen, E.P. Hartouni, M. Harvey, R. Hayano, N. Hayashi, X. He, M. Heffner, T.K. Hemmick, J.M. Heuser, M. Hibino, J.C. Hill, W. Holzmann, K. Homma, B. Hong, A. Hoover, T. Ichihara, 39 V.V. Ikonnikov, K. Imai, 38 D. Isenhower, M. Ishihara, M. Issah, A. Isupov, B.V. Jacak, W.Y. Jang, Y. Jeong, J. Jia, O. Jinnouchi, B.M. Johnson, S.C. Johnson, K.S. Joo, D. Jouan, S. Kametani, 50 N. Kamihara, 38 J.H. Kang, S.S. Kapoor, K. Katou, S. Kelly, B. Khachaturov, A. Khanzadeev, J. Kikuchi, D.H. Kim, D.J. Kim, D.W. Kim, E. Kim, G.-B. Kim, H.J. Kim, E. Kistenev, A. Kiyomichi, K. Kiyoyama, C. Klein-Boesing, H. Kobayashi, 39 L. Kochenda, V. Kochetkov, D. Koehler, T. Kohama, M. Kopytine, D. Kotchetkov, A. Kozlov, P.J. Kroon, C.H. Kuberg, 27 K. Kurita, Y. Kuroki, M.J. Kweon, Y. Kwon, G.S. Kyle, R. Lacey, V. Ladygin, J.G. Lajoie, A. Lebedev, 23 S. Leckey, D.M. Lee, S. Lee, M.J. Leitch, X.H. Li, H. Lim, A. Litvinenko, M.X. Liu, Y. Liu, C.F. Maguire, Y.I. Makdisi, A. Malakhov, V.I. Manko, Y. Mao, 38 G. Martinez, M.D. Marx, H. Masui, F. Matathias, T. Matsumoto, 50 P.L. McGaughey, E. Melnikov, F. Messer, Y. Miake, J. Milan, T.E. Miller, A. Milov, 51 S. Mioduszewski, R.E. Mischke, G.C. Mishra, J.T. Mitchell, A.K. Mohanty, D.P. Morrison, J.M. Moss, F. Mühlbacher, D. Mukhopadhyay, M. Muniruzzaman, J. Murata, 39 S. Nagamiya, J.L. Nagle, T. Nakamura, B.K. Nandi, M. Nara, J. Newby, P. Nilsson, A.S. Nyanin, J. Nystrand, E. O’Brien, C.A. Ogilvie, H. Ohnishi, 38 I.D. Ojha, 3 K. Okada, M. Ono, V. Onuchin, A. Oskarsson, I. Otterlund, K. Oyama, K. Ozawa, D. Pal, A.P.T. Palounek, V. Pantuev, V. Papavassiliou, J. Park, A. Parmar, S.F. Pate, T. Peitzmann, J.-C. Peng, V. Peresedov, C. Pinkenburg, R.P. Pisani, F. Plasil, M.L. Purschke, A.K. Purwar, J. Rak, I. Ravinovich, K.F. Read, 46 M. Reuter, K. Reygers, V. Riabov, 40 Y. Riabov, G. Roche, A. Romana, M. Rosati, P. Rosnet, S.S. Ryu, M.E. Sadler, N. Saito, 39 T. Sakaguchi, 50 M. Sakai, S. Sakai, V. Samsonov, L. Sanfratello, R. Santo, H.D. Sato, 38 S. Sato, 48 S. Sawada, Y. Schutz, V. Semenov, R. Seto, M.R. Shaw, 27 T.K. Shea, T.-A. Shibata, 38 K. Shigaki, 20 T. Shiina, C.L. Silva, D. Silvermyr, 29 K.S. Sim, C.P. Singh, V. Singh, M. Sivertz, A. Soldatov, R.A. Soltz, W.E. Sondheim, S.P. Sorensen, I.V. Sourikova, F. Staley, P.W. Stankus, E. Stenlund, M. Stepanov, A. Ster, S.P. Stoll, T. Sugitate, J.P. Sullivan, E.M. Takagui, A. Taketani, 39 M. Tamai, K.H. Tanaka, Y. Tanaka, K. Tanida, M.J. Tannenbaum, P. Tarján, J.D. Tepe, 27 T.L. Thomas, J. Tojo, 38 H. Torii, 38 R.S. Towell, I. Tserruya, H. Tsuruoka, S.K. Tuli, H. Tydesjö, N. Tyurin, H.W. van Hecke, J. Velkovska, 44 M. Velkovsky, V. Veszprémi, L. Villatte, A.A. Vinogradov, M.A. Volkov, E. Vznuzdaev, X.R. Wang, Y. Watanabe, 39 S.N. White, F.K. Wohn, C.L. Woody, W. Xie, Y. Yang, A. Yanovich, S. Yokkaichi, 39 G.R. Young, I.E. Yushmanov, W.A. Zajc, † C. Zhang, S. Zhou, S.J. Zhou, and L. Zolin

Emission source functions are extracted from correlation functions constructed from charged pions produced at midrapidity in Au+Au collisions at sqrt[s(NN)]=200 GeV. The source parameters extracted from these functions at low k(T) give first indications of a long tail for the pion emission source. The source extension cannot be explained solely by simple kinematic considerations. The possible role of a halo of secondary pions from resonance emissions is explored.

Inclusive transverse momentum spectra of \ensuremath{\eta} mesons in the range ${p}_{T}\ensuremath{\approx}2$--12 GeV/$c$ have been measured at midrapidity ($|\ensuremath{\eta}|<0.35$) by the PHENIX experiment at RHIC in $p+p,d$+Au, and Au+Au collisions at $\sqrt{{s}_{\mathit{NN}}}=200$ GeV. The \ensuremath{\eta} mesons are reconstructed through their $\ensuremath{\eta}\ensuremath{\rightarrow}\ensuremath{\gamma} \ensuremath{\gamma}$ channel for the three colliding systems as well as through the $\ensuremath{\eta}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ decay mode in $p+p$ and $d$+Au collisions. The nuclear modification factor in $d$+Au collisions, ${R}_{d\mathrm{Au}}({p}_{T})\ensuremath{\approx}1.0$--1.1, suggests at most only modest ${p}_{T}$ broadening (``Cronin enhancement''). In central Au+Au reactions, the \ensuremath{\eta} yields are significantly suppressed, with ${R}_{\mathrm{AuAu}}({p}_{T})\ensuremath{\approx}0.2$. The ratio of \ensuremath{\eta} to ${\ensuremath{\pi}}^{0}$ yields is approximately constant as a function of ${p}_{T}$ for the three colliding systems in agreement with the high-${p}_{T}$ world average of ${R}_{\ensuremath{\eta}/{\ensuremath{\pi}}^{0}}\ensuremath{\approx}0.5$ in hadron-hadron, hadron-nucleus, and nucleus-nucleus collisions for a wide range of center-of-mass energies ($\sqrt{{s}_{\mathit{NN}}}\ensuremath{\approx}3$--1800 GeV) as well as, for high scaled momentum ${x}_{p}$, in ${e}^{+}{e}^{\ensuremath{-}}$ annihilations at $\sqrt{s}=91.2$ GeV. These results are consistent with a scenario where high-${p}_{T}$ \ensuremath{\eta} production in nuclear collisions at the Relativistic Heavy Ion Collider is largely unaffected by initial-state effects but where light-quark mesons (${\ensuremath{\pi}}^{0},\ensuremath{\eta}$) are equally suppressed due to final-state interactions of the parent partons in the dense medium produced in Au+Au reactions.

Longitudinal density correlations of produced matter in Au+Au collisions at sqrt(s{sub NN})=200 GeV have been measured from the inclusive charged particle distributions as a function of pseudorapidity window sizes. The extracted {alpha}{xi} parameter, related to the susceptibility of the density fluctuations in the long-wavelength limit, exhibits a nonmonotonic behavior as a function of the number of participant nucleons, N{sub part}. A local maximum is seen at N{sub part}{approx}90, with corresponding energy density based on the Bjorken picture of {epsilon}{sub Bj}{tau}{approx}2.4 GeV/(fm{sup 2}c) with a transverse area size of 60 fm2. This behavior may suggest a critical phase boundary based on the Ginzburg-Landau framework.