Search for hadronic decays of W and Z bosons in photon events in pp¯ collisions at s=1.96 TeV

T. Aaltonen,J. Adelman,T. Akimoto,M. Albrow,B. González,S. Amerio,D. Amidei,A. Anastassov,A. Annovi,J. Antos,M. Aoki,G. Apollinari,A. Apresyan,T. Arisawa,A. Artikov,W. Ashmanskas,A. Attal,A. Aurisano,F. Azfar,P. Azzi-Bacchetta,P. Azzurri,N. Bacchetta,W. Badgett,A. Barbaro-Galtieri,V. Barnes,B. Barnett,S. Baroiant,V. Bartsch,G. Bauer,P.-H. Beauchemin,F. Bedeschi,P. Bednar,S. Behari,G. Bellettini,J. Bellinger,A. Belloni,D. Benjamin, A. Beretvas,J. Beringer,T. Berry,A. Bhatti,M. Binkley,D. Bisello,I. Bizjak,R. Blair,C. Blocker,B. Blumenfeld,A. Bocci,A. Bodek,V. Boisvert,G. Bolla,A. Bolshov,D. Bortoletto,J. Boudreau,A. Boveia,B. Brau,A. Bridgeman,L. Brigliadori,C. Bromberg,E. Brubaker,J. Budagov,H. Budd,S. Budd,K. Burkett,G. Busetto,P. Bussey,A. Buzatu,K. Byrum,S. Cabrera,M. Campanelli,M. Campbell,F. Canelli,A. Canepa, D. Carlsmith,R. Carosi,S. Carrillo,S. Carron,B. Casal,M. Casarsa,A. Castro,P. Catastini,D. Cauz,M. Cavalli-Sforza,A. Cerri,L. Cerrito,S. Chang,Y. Chen,M. Chertok,G. Chiarelli,G. Chlachidze,F. Chlebana,K. Cho,D. Chokheli,J. Chou,G. Choudalakis,S. Chuang,K. Chung,W. Chung,Y. Chung,C. Ciobanu,M. Ciocci,A. Clark,D. Clark,G. Compostella,M. Convery,J. Conway,B. Cooper,K. Copic,M. Cordelli,G. Cortiana,F. Crescioli,C. Almenar,J. Cuevas,R. Culbertson,J. Cully,D. Dagenhart,M. Datta,T. Davies,P. de Barbaro,S. De Cecco,A. Deisher,G. De Lentdecker,G. De Lorenzo,M. Dell’Orso,L. Demortier,J. Deng,M. Deninno,D. De Pedis,P. Derwent,G. Giovanni,C. Dionisi,B. Di Ruzza,J. Dittmann,M. D’Onofrio,S. Donati,P. Dong,J. Donini,T. Dorigo,S. Dube,J. Efron,R. Erbacher,D. Errede,S. Errede, R. Eusebi,H. Fang,S. Farrington,W. Fedorko,R. Feild,M. Feindt,J. Fernandez,C. Ferrazza,R. Field,G. Flanagan,R. Forrest,S. Forrester,M. Franklin,J. Freeman,I. Furic,M. Gallinaro,J. Galyardt,F. Garberson,J. Garcia,A. Garfinkel,K. Genser,H. Gerberich,D. Gerdes,S. Giagu,V. Giakoumopolou,P. Giannetti,K. Gibson,J. Gimmell,C. Ginsburg,N. Giokaris,M. Giordani,P. Giromini,M. Giunta,V. Glagolev,D. Glenzinski,M. Gold,N. Goldschmidt,A. Golossanov,G. Gomez,G. Gomez-Ceballos,M. Goncharov,O. González,I. Gorelov,A. Goshaw,K. Goulianos, A. Gresele,S. Grinstein,C. Grosso-Pilcher,R. Group,U. Grundler,J. Guimaraes da Costa,Z. Gunay-Unalan,C. Haber,K. Hahn,S. Hahn,E. Halkiadakis,A. Hamilton,B.-Y. Han,J. Han,R. Handler,F. Happacher,K. Hara,D. Hare,M. Hare,S. Harper,R. Harr,R. Harris,M. Hartz,K. Hatakeyama,J. Hauser,C. Hays,M. Heck,A. Heijboer,B. Heinemann,J. Heinrich,C. Henderson,M. Herndon,J. Heuser, S. Hewamanage,D. Hidas,C. Hill,D. Hirschbuehl,A. Hocker,S. Hou,M. Houlden,S.-C. Hsu,B. Huffman,R. Hughes,U. Husemann,J. Huston,J. Incandela,G. Introzzi,M. Iori,A. Ivanov,B. Iyutin, E. James,B. Jayatilaka,D. Jeans,E. Jeon,S. Jindariani,W. Johnson,M. Jones,K. Joo,S. Jun,J. Jung,T. Junk,T. Kamon,D. Kar,P. Karchin,Y. Kato,R. Kephart,U. Kerzel,V. Khotilovich,B. Kilminster,D. Kim,H. Kim,J. Kim,M. Kim,S. Kim,Y. Kim,N. Kimura, L. Kirsch,S. Klimenko,M. Klute,B. Knuteson,B. Ko,S. Koay,K. Kondo,D. Kong,J. Konigsberg,A. Korytov,A. Kotwal,J. Kraus,M. Kreps,J. Kroll,N. Krumnack,M. Kruse,V. Krutelyov,T. Kubo,S. Kuhlmann,T. Kuhr,N. Kulkarni,Y. Kusakabe,S. Kwang,A. Laasanen,S. Lai,S. Lami,S. Lammel,M. Lancaster,R. Lander,K. Lannon,A. Lath,G. Latino,I. Lazzizzera,T. LeCompte,J. Lee,Y. Lee,S. Lee,R. Lefèvre,N. Leonardo,S. Leone,S. Levy,J. Lewis,C. Lin,J. Linacre,M. Lindgren,E. Lipeles,A. Lister,D. Litvintsev,T. Liu,N. Lockyer,A. Loginov,M. Loreti,L. Lovas,R.-S. Lu,D. Lucchesi,J. Lueck,C. Luci,P. Lujan,P. Lukens,G. Lungu,L. Lyons,J. Lys,R. Lysak,E. Lytken,P. Mack,D. MacQueen,R. Madrak,K. Maeshima, K. Makhoul,T. Maki,P. Maksimovic,S. Malde,S. Malik,G. Manca,A. Manousakis,F. Margaroli,C. Marino, A. Martin,M. Martin,V. Martin,M. Martínez,R. Martínez-Ballarín,T. Maruyama,P. Mastrandrea,T. Masubuchi,M. Mattson,P. Mazzanti,K. McFarland,P. McIntyre,R. McNulty,A. Mehta, P. Mehtala,S. Menzemer,A. Menzione,P. Merkel,C. Mesropian,A. Messina,T. Miao,N. Miladinovic,J. Miles,R. Miller,C. Mills,M. Milnik,A. Mitra,G. Mitselmakher,H. Miyake, S. Moed,N. Moggi,C. Moon,R. Moore,M. Morello,P. Fernandez,J. Mülmenstädt,A. Mukherjee,Th. Muller,R. Mumford,P. Murat,M. Mussini,J. Nachtman,Y. Nagai,A. Nagano,J. Naganoma,K. Nakamura,I. Nakano,A. Napier,V. Necula,C. Neu,M. Neubauer,J. Nielsen,L. Nodulman,M. Norman,O. Norniella,E. Nurse,S. Oh,Y. Oh,I. Oksuzian,T. Okusawa,R. Oldeman,R. Orava,K. Osterberg,S. Pagan Griso,C. Pagliarone,E. Palencia,V. Papadimitriou,A. Papaikonomou,A. Paramonov,B. Parks,S. Pashapour,J. Patrick,G. Pauletta,M. Paulini,C. Paus,D. Pellett,A. Penzo,T. Phillips,G. Piacentino,J. Piedra,L. Pinera,K. Pitts,C. Plager,L. Pondrom,X. Portell,O. Poukhov,N. Pounder,F. Prakoshyn,A. Pronko,J. Proudfoot,F. Ptohos,G. Punzi,J. Pursley,J. Rademacker,A. Rahaman,V. Ramakrishnan,N. Ranjan,I. Redondo,B. Reisert,V. Rekovic,P. Renton,M. Rescigno,S. Richter,F. Rimondi,L. Ristori,A. Robson,T. Rodrigo,E. Rogers,S. Rolli,R. Roser,M. Rossi,R. Rossin,P. Roy,A. Ruiz,J. Russ,V. Rusu,H. Saarikko,A. Safonov,W. Sakumoto,G. Salamanna,O. Saltó,L. Santi,S. Sarkar,L. Sartori,K. Sato,A. Savoy-Navarro,T. Scheidle,P. Schlabach,E. Schmidt,M. Schmidt, M. Schmitt,T. Schwarz,L. Scodellaro,A. Scott,A. Scribano,F. Scuri,A. Sedov,S. Seidel,Y. Seiya,A. Semenov,L. Sexton-Kennedy,A. Sfyrla,S. Shalhout,M. Shapiro,T. Shears,P. Shepard,D. Sherman,M. Shimojima,M. Shochet,Y. Shon,I. Shreyber,A. Sidoti,P. Sinervo,A. Sisakyan,A. Slaughter,J. Slaunwhite,K. Sliwa,J. Smith,F. Snider,R. Snihur,M. Soderberg,A. Soha,S. Somalwar,V. Sorin,J. Spalding,F. Spinella,T. Spreitzer,P. Squillacioti, M. Stanitzki,R. St. Denis,B. Stelzer,O. Stelzer-Chilton, D. Stentz,J. Strologas,D. Stuart,J. Suh,A. Sukhanov,H. Sun,I. Suslov,T. Suzuki,A. Taffard,R. Takashima,Y. Takeuchi,R. Tanaka,M. Tecchio,P. Teng,K. Terashi,J. Thom,A. Thompson,G. Thompson,E. Thomson,P. Tipton, V. Tiwari, S. Tkaczyk,D. Toback,S. Tokar,K. Tollefson,T. Tomura,D. Tonelli,S. Torre,D. Torretta,S. Tourneur,W. Trischuk,Y. Tu,N. Turini,F. Ukegawa,S. Uozumi,S. Vallecorsa,N. van Remortel,A. Varganov,E. Vataga,F. Vázquez,G. Velev, C. Vellidis,V. Veszpremi,M. Vidal,R. Vidal,I. Vila,R. Vilar,T. Vine,M. Vogel,I. Volobouev,G. Volpi,F. Würthwein,P. Wagner,R. Wagner,J. Wagner-Kuhr,W. Wagner,T. Wakisaka,R. Wallny,S. Wang,A. Warburton,D. Waters,M. Weinberger,W. Wester,B. Whitehouse,D. Whiteson,A. Wicklund, E. Wicklund,G. Williams,H. Williams,P. Wilson,B. Winer,P. Wittich,S. Wolbers,C. Wolfe,T. Wright,X. Wu,S. Wynne,A. Yagil,K. Yamamoto,J. Yamaoka,T. Yamashita,C. Yang,U. Yang, Y. Yang,W. Yao,G. Yeh,J. Yoh,K. Yorita,T. Yoshida,G. Yu,I. Yu,S. Yu,J. Yun,L. Zanello,A. Zanetti,I. Zaw,X. Zhang,Y. Zheng,S. Zucchelli

PHYSICAL REVIEW D（2009）

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摘要

We report on a search for the process p (p) over bar -> gamma + W/Z with W/Z -> q (q) over bar in events containing two jets and a photon at the center-of-mass energy root s 1.96 TeV, using 184 pb(-1) of data collected by the CDF II detector. A neural network event selection has been developed to optimize the rejection of the large QCD production background; it is shown that this method gives a significant improvement in both signal-to-noise ratio and signal sensitivity, as compared with an event selection based on conventional cuts. An upper limit is presented for the gamma + W/Z production cross section with the W and Z decaying hadronically.

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