The product ion rate o f electrons with momentum p > 4 G e V / c and large m o m e n t u m transverse to the jet containing the electron has been measured in 136 000 hadronic decays o f the Z ~ recorded with the O P A L detector at LEP in 1990. The dominan t source o f these electrons is the semileptonic decay of hadrons containing b quarks. I f we assume that the semileptonic branching fraction o f b hadrons produced on the Z ~ resonance is the same as the branching fraction measured at the r ( 4 S) resonance, we determine Fse = 394 + 13 + 32 MeV, where the first error is statistical and the second error is systematic. The sensitivity o f the result to this assumption is discussed. We have reduced the dependence o f our result on the model o f b hadron semileptonic decay by taking into account the correlat ion between the model dependence o f the branching fractions measured at the Y (4 S ) and of our kinematic acceptance for electrons.

We report measurements of the lifetimes of the D, D+, and D,+ (F+) mesons produced in e+e collisions at a center-of-mass energy of 29 GeV. The decay vertex distribution in the processes D ~K rr+, D+~E n+n+, and . D+~Prr+ were made using a vertex chamber installed in the High Resolution Spectrometer at the SLAC storage ring PEP. The measured lifetimes are ~ 0=(4.4+1.0%0.6)X10 ' s, w +=(9.2+,'3+1.6)X10 " s, and r +=(3.1+20+0.5)X10 " s. S In addition the lifetime of the B meson is determined assuming that only the B and not the B decays to a D*+ meson. The B is not directly observed. The lifetime w 0 is estimated indirectly to be (8.2+3 7+2.7) X 10

Measurement of the B -Meson Lifetime S. R. Wagner, ' D. A. Hinshaw, ' R. A. Ong, A. Snyder, G. Abrams, " C. E. Adolphsen, C. Akerlof, J. P. Alexander, ( M. Alvarez, ' D. Amidei, A. R. Baden, J. Ballam, B. C. Barish, T. Barklow, B. A. Barnett, ) J. Bartelt, ) D. Blockus, G. Bonvicini, A. Boyarski, J. Boyer, B. Brabson, ) A. Breakstone, ( ) J. M. Brom, ) F. Bulos, ( P. R. Burchat, D. L. Burke, F. Butler, ) F. Calvino, ') R. J. Cence, ( ) J. Chapman, ) D. Cords, ( D. P. Coupal, H. C. DeStaebler, ( ) D. E. Dorfan, J. M. Dorfan, ( ) P. S. Drell, G. J. Feldman, E. Fernandez, ' R. C. Field, W. T. Ford, ' C. Fordham (2) R. Frey'(6) D. Fujino (2) K. K. Gan, (2) G. Gidal, (4) L. Gladney (2) T. Glanzman, (2) M. S. Gold, G. Goldhaber, A. Green, ) P. Grosse-Wiesmann, ( ) J. Haggerty, G. Hanson, ) R. Harr, ( ) F. A. Harris, ( ) C. M. Hawkes, ( K. Hayes, D. Herrup, C. A. Heusch, T. Himel, ( ) R. J. Hollebeek, ( ) D. Hutchinson, (2) J. Hylen, (s) W. R. Innes, (2) M. Jaffre, ( ) J. A. Jaros, I. Juricic, ( ) J. A. Kadyk, D. Karlen, J. Kent, S. R. Klein, W. Koska, W. Kozanecki, A. J. Lankford, R. R. Larsen, (2) B W. Leclalre(2) 'M E. Levi, (4) A. M. Litke, (5) N. S. L~kyer, (2) V. Luth (2)'J A J Matthews, D. I. Meyer, B. D. Milliken, K. C. Moffeit, L. Miiller, J. Nash, M. E. Nelson, D. Nitz, ( ) H. Ogren, ( K. F. O'Shaughnessy, ( S. I. Parker, ( ) C. Peck, ( M. L. Perl, A. Petersen, M. Petradza, F. C. Porter, P. Rankin, ' B. Richter, K. Riles, P. C. Rowson, D. R. Rust, H. F. W. Sadrozinski, (5) T. Schaad, (' ) T. L. Schalk, ( ) H. Schellman, ( ) W. B. Schmidke, (4) A. S. Schwarz, ( A. Seiden, ( ) P. D. Sheldon, ( ) J. G. Smith, ') E. Soderstrom, D. P. Stoker, ( ) R. Stroynowski, R. Thun, G. H. Trilling, " R. Tschirhart, R. Van Kooten, H. Veltman, P. Voruganti, ) P. Weber, ' A. J. Weinstein, S. Weisz, ( S. L. White, ' E. Wicklund, A. J. Weir, D. R. Wood, D. Y. Wu, and J. M. Yelton ")University of Colorado, Boulder, Colorado 80309 ' 'Stanford Linear Accelerator Center, Stanford University, Stanford, California 94309 ' Indiana University, Bloomington, Indiana 47405 ' 'Lawrence Berkeley Laboratory and Department of Physics, University of California, Berkeley, California 94720 (~'University of California, Santa Cruz, California 95064 (6)University of Michigan, Ann Arbor, Michigan 48109 ("California Institute of Technology, Pasadena, California 91125 Johns Hopkins University, Baltimore, Maryland 2)218 ( )University of Hawaii, Honolulu, Hawaii 96822 Harvard University, Cambridge, Massachusetts 02138 (Received 20 November 1989)

The reconstruction of photons in the ATLAS detector is stud ied with data taken during the 2004 Combined Test Beam, where a full slice of the ATLAS de tector was exposed to beams of particles of known energy at the CERN SPS. The results pres ent d show significant differences in the longitudinal development of the electromagnetic sho wer between converted and unconverted photons as well as in the total measured energy. The potentia l to use the reconstructed converted photons as a means to precisely map the material of the tracke r in front of the electromagnetic calorimeter is also considered. All results obtained are co mpared with a detailed Monte-Carlo simulation of the test-beam setup which is based on the same s imulation and reconstruction tools as those used for the ATLAS detector itself.

In 2004 at the ATLAS (A Toroidal LHC ApparatuS) combined test beam, one slice of the ATLAS barrel detector (including an Inner Detector set-up and the Liquid Argon calorimeter) was exposed to particles from the H8 SPS beam line at CERN. It was the first occasion to test the combined electron performance of ATLAS. This paper presents results obtained for the momentum measurement p with the Inner Detector and for the performance of the electron measurement with the LAr calorimeter (energy E linearity and resolution) in the presence of a magnetic field in the Inner Detector for momenta ranging from 20 GeV/c to 100 GeV/c. Furthermore the particle identification capabilities of the Transition Radiation Tracker, Bremsstrahlungs-recovery algorithms relying on the LAr calorimeter and results obtained for the E/p ratio and a way how to extract scale parameters will be discussed.

A fully instrumented slice of the ATLAS detector was exposed to test beams from the SPS (Super Proton Synchrotron) at CERN in 2004. In this paper, the results of the measurements of the response of the barrel calorimeter to hadrons with energies in the range 20–350GeV and beam impact points and angles corresponding to pseudo-rapidity values in the range 0.2–0.65 are reported. The results are compared to the predictions of a simulation program using the Geant 4 toolkit.

A fully instrumented slice of the ATLAS central detector was exposed to test beams from the SPS (Super Proton Synchrotron) at CERN in 2004. In this paper, the response of the central calorimeters to pions with energies in the range between 3 and 9 GeV is presented. The linearity and the resolution of the combined calorimetry (electromagnetic and hadronic calorimeters) was measured and compared to the prediction of a detector simulation program using the toolkit Geant 4.

The ATLAS TRT barrel is a tracking drift chamber using 52,544 individual tubular drift tubes. It is one part of the ATLAS Inner Detector, which consists of three sub-systems: the pixel detector spanning the radius range 4 to 20 cm, the semiconductor tracker (SCT) from 30 to 52 cm, and the transition radiation tracker ( TRT) from 56 to 108 cm. The TRT barrel covers the central pseudo-rapidity region |eta| < 1, while the TRT endcaps cover the forward and backward eta regions. These TRT systems provide a combination of continuous tracking with many measurements in individual drift tubes ( or straws) and of electron identification based on transition radiation from fibers or foils interleaved between the straws themselves. This paper describes the recently-completed construction of the TRT Barrel detector, including the quality control procedures used in the fabrication of the detector.

Events with four distinct jets from e + e − collisions, collected by the OPAL detector at centre-of-mass energies between 130 and 184 GeV, are analysed for a peak in the sum of dijet masses. This search is motivated by the ALEPH Collaboration's observation of a clear excess of events with dijet mass sums close to 105 GeV in data taken at centre-of-mass energies of 130 and 136 GeV in 1995. We have observed no significant excess of four-jet events compared to the Standard Model expectation for any dijet mass sum at any energy. Our observation is inconsistent with the excess observed by ALEPH in 1995. Upper limits are determined on the production cross-section as a function of the dijet mass sum.

The ATLAS TRT end-cap is a tracking drift chamber using 245,760 individual tubular drift tubes. It is a part of the TRT tracker which consist of the barrel and two end-caps. The TRT end-caps cover the forward and backward pseudo-rapidity region 1.0 < vertical bar eta vertical bar < 2.0, while the TRT barrel central eta region vertical bar eta vertical bar < 1.0. The TRT system provides a combination of continuous tracking with many measurements in individual drift tubes ( or straws) and of electron identification based on transition radiation from fibers or foils interleaved between the straws themselves. Along with other two sub-systems, namely the Pixel detector and Semi Conductor Tracker (SCT), the TRT constitutes the ATLAS Inner Detector. This paper describes the recently completed and installed TRT end-cap detectors, their design, assembly, integration and the acceptance tests applied during the construction.

The ATLAS inner detector consists of three sub-systems: the pixel detector spanning the radius range 4cm-20cm, the semiconductor tracker at radii from 30 to 52 cm, and the transition radiation tracker (TRT), tracking from 56 to 107 cm. The TRT provides a combination of continuous tracking with many projective measurements based on individual drift tubes (or straws) and of electron identification based on transition radiation from fibres or foils interleaved between the straws themselves. This paper describes the on and off detector electronics for the TRT as well as the TRT portion of the data acquisition (DAQ) system.

A straw proportional counter is the basic element of the ATLAS Transition Radiation Tracker (TRT). Its detailed properties as well as the main properties of a few TRT operating gas mixtures are described. Particular attention is paid to straw tube performance in high radiation conditions and to its operational stability.

A search for charginos and neutralinos, predicted by supersymmetric theories, is performed using a data sample of 182.1 pb−1 taken at a centre-of-mass energy of 189 GeV with the OPAL detector at LEP. No evidence for chargino or neutralino production is found. Upper limits on chargino and neutralino pair production (χ̃1 χ̃ − 1 , χ̃ 0 1χ̃ 0 2) cross-sections are obtained as a function of the chargino mass (mχ̃± 1 ), the lightest neutralino mass (mχ̃0 1 ) and the second lightest neutralino mass (mχ̃0 2 ). Within the Constrained Minimal Supersymmetric Standard Model framework, and for mχ̃± 1 −mχ̃0 1 ≥ 5 GeV, the 95% confidence level lower limits on mχ̃± 1 are 93.6 GeV for tan β = 1.5 and 94.1 GeV for tan β = 35. These limits are obtained assuming a universal scalar mass m0 ≥ 500 GeV. The corresponding limits for all m0 are 78.0 and 71.7 GeV. The 95% confidence level lower limits on the lightest neutralino mass, valid for any value of tan β are 32.8 GeV for m0 ≥ 500 GeV and 31.6 GeV for all m0. (Submitted to Phys. Lett. B) The OPAL Collaboration G. Abbiendi, K. Ackerstaff, G. Alexander, J. Allison, K.J. Anderson, S. Anderson, S. Arcelli, S. Asai, S.F. Ashby, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, J.R. Batley, S. Baumann, J. Bechtluft, T. Behnke, K.W. Bell, G. Bella, A. Bellerive, S. Bentvelsen, S. Bethke, S. Betts, O. Biebel, A. Biguzzi, I.J. Bloodworth, P. Bock, J. Böhme, O. Boeriu, D. Bonacorsi, M. Boutemeur, S. Braibant, P. Bright-Thomas, L. Brigliadori, R.M. Brown, H.J. Burckhart, P. Capiluppi, R.K. Carnegie, A.A. Carter, J.R. Carter, C.Y. Chang, D.G. Charlton, D. Chrisman, C. Ciocca, P.E.L. Clarke, E. Clay, I. Cohen, J.E. Conboy, O.C. Cooke, J. Couchman, C. Couyoumtzelis, R.L. Coxe, M. Cuffiani, S. Dado, G.M. Dallavalle, S. Dallison, R. Davis, S. De Jong, A. de Roeck, P. Dervan, K. Desch, B. Dienes, M.S. Dixit, M. Donkers, J. Dubbert, E. Duchovni, G. Duckeck, I.P. Duerdoth, P.G. Estabrooks, E. Etzion, F. Fabbri, A. Fanfani, M. Fanti, A.A. Faust, L. Feld, P. Ferrari, F. Fiedler, M. Fierro, I. Fleck, A. Frey, A. Fürtjes, D.I. Futyan, P. Gagnon, J.W. Gary, G. Gaycken, C. Geich-Gimbel, G. Giacomelli, P. Giacomelli, W.R. Gibson, D.M. Gingrich, D. Glenzinski, J. Goldberg, W. Gorn, C. Grandi, K. Graham, E. Gross, J. Grunhaus, M. Gruwé, C. Hajdu G.G. Hanson, M. Hansroul, M. Hapke, K. Harder, A. Harel, C.K. Hargrove, M. Harin-Dirac, M. Hauschild, C.M. Hawkes, R. Hawkings, R.J. Hemingway, G. Herten, R.D. Heuer, M.D. Hildreth, J.C. Hill, P.R. Hobson, A. Hocker, K. Hoffman, R.J. Homer, A.K. Honma, D. Horváth, K.R. Hossain, R. Howard, P. Hüntemeyer, P. Igo-Kemenes, D.C. Imrie, K. Ishii, F.R. Jacob, A. Jawahery, H. Jeremie, M. Jimack, C.R. Jones, P. Jovanovic, T.R. Junk, N. Kanaya, J. Kanzaki, D. Karlen, V. Kartvelishvili, K. Kawagoe, T. Kawamoto, P.I. Kayal, R.K. Keeler, R.G. Kellogg, B.W. Kennedy, D.H. Kim, A. Klier, T. Kobayashi, M. Kobel, T.P. Kokott, M. Kolrep, S. Komamiya, R.V. Kowalewski, T. Kress, P. Krieger, J. von Krogh, T. Kuhl, P. Kyberd, G.D. Lafferty, H. Landsman, D. Lanske, J. Lauber, I. Lawson, J.G. Layter, D. Lellouch, J. Letts, L. Levinson, R. Liebisch, J. Lillich, B. List, C. Littlewood, A.W. Lloyd, S.L. Lloyd, F.K. Loebinger, G.D. Long, M.J. Losty, J. Lu, J. Ludwig, D. Liu, A. Macchiolo, A. Macpherson, W. Mader, M. Mannelli, S. Marcellini, T.E. Marchant, A.J. Martin, J.P. Martin, G. Martinez, T. Mashimo, P. Mättig, W.J. McDonald, J. McKenna, E.A. Mckigney , T.J. McMahon, R.A. McPherson, F. Meijers, P. Mendez-Lorenzo, F.S. Merritt, H. Mes, I. Meyer, A. Michelini, S. Mihara, G. Mikenberg, D.J. Miller, W. Mohr, A. Montanari, T. Mori, K. Nagai, I. Nakamura, H.A. Neal , R. Nisius, S.W. O’Neale, F.G. Oakham, F. Odorici, H.O. Ogren, A. Okpara, M.J. Oreglia, S. Orito, G. Pásztor, J.R. Pater, G.N. Patrick, J. Patt, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider , J.E. Pilcher, J. Pinfold, D.E. Plane, P. Poffenberger, B. Poli, J. Polok, M. Przybycień, A. Quadt, C. Rembser, H. Rick, S. Robertson, S.A. Robins, N. Rodning, J.M. Roney, S. Rosati, K. Roscoe, A.M. Rossi, Y. Rozen, K. Runge, O. Runolfsson, D.R. Rust, K. Sachs, T. Saeki, O. Sahr, W.M. Sang, E.K.G. Sarkisyan, C. Sbarra, A.D. Schaile, O. Schaile, P. Scharff-Hansen, J. Schieck, S. Schmitt, A. Schöning, M. Schröder, M. Schumacher, C. Schwick, W.G. Scott, R. Seuster, T.G. Shears, B.C. Shen, C.H. Shepherd-Themistocleous , P. Sherwood, G.P. Siroli, A. Skuja, A.M. Smith, G.A. Snow, R. Sobie, S. Söldner-Rembold, S. Spagnolo, M. Sproston, A. Stahl, K. Stephens, K. Stoll, D. Strom, R. Ströhmer, B. Surrow, S.D. Talbot, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, J. Thomas, M.A. Thomson, E. Torrence,

The forward-backward asymmetry of e + e ? ! Z 0 ! bb has been measured using approximately 2.15 million hadronic Z 0 decays collected at the LEP e + e ? collider with the OPAL detector. A lifetime tag technique was used to select an enriched bb event sample. The measurement of the bb asymmetry was then performed using a jet charge algorithm to determine the direction of the primary quark. were measured where, in each case, the rst error is statistical, the second is systematic and the third term gives the variation due to a change (? bb =? had) in the value of ? bb =? had = 0:216 assumed. The dependence on the assumed charm asymmetry at the same energy is (A b FB) +0:077(A c FB). Assuming the Standard Model form for the couplings, these measurements correspond to an eeective weak mixing angle of: sin 2 ee;e +16 ?19 GeV/c 2 , where the rst error is statistical and the second is systematic. The Higgs mass assumed is 300 GeV/c 2. A variation in the assumed mass of the Higgs boson between 60 and 1000 GeV/c 2 corresponds to an uncertainty in sin 2 ee;e W of 0:00006 and on M top of +20 ?26 GeV/c 2 .

We report a measurement of the branching ratio B(D + ! 0 ` + `)/ B(D + ! K 0 ` + `) from the Fermilab charm hadroproduction experiment E791. Based on signals of 49 17 events in the D + ! 0 e + e mode and 54 18 events in the D + ! 0 + mode, we measure Combining the results from both the electronic and muonic modes, we obtain 2 Semileptonic charm decays are useful in probing the dynamics of hadronic currents since the Cabibbo-Kobayashi-Maskawa matrix elements for the charm sector are well-known from unitarity constraints. Form factors for Cabibbo-suppressed (CS) c ! d semileptonic decays can be related via Heavy Quark EEective Theory (HQET) to those for b ! u semileptonic decays at the same four-velocity transfer 1]. Since knowledge of the form factors in b ! u transitions is vital for extracting V ub from b ! u semileptonic decays in a model-independent way, study of c ! d semileptonic decays can improve our knowledge of V ub. Although considerable progress has been made in studying CS semileptonic charm decays to pseudoscalar mesons 2], the only previous result on CS semileptonic charm decay to a vector meson is based on four D + ! 0 + events 3]. In this Letter, we report a new measurement from the Fermilab hadroproduction experiment E791 of B(D + ! 0 ` + `)=B(D + ! K 0 ` + `) based on more than 100 D + ! 0 ` + ` decays in the combined electronic and muonic modes. The E791 experiment 4] recorded 2 10 10 events from 500 GeV/c ? interactions in ve thin targets (one platinum, four diamond) separated by gaps of 1.34 to 1.39 cm. Precision tracking and vertexing information was provided by 23 silicon microstrip detectors (6 upstream and 17 downstream of the targets) and 35 drift chamber planes. Momentum was measured with two dipole magnets. Two segmented threshold Cerenkov counters provided =K separation in the 6 ? 60 GeV/c momentum range 5]. (charge-conjugate states are implied throughout this Letter) are selected by requiring a three-prong decay vertex of charge 1 with one of the decay particles being identiied as a lepton. A segmented lead and liquid-scintillator calorimeter 6] is used to identify the electrons, based on energy deposition and transverse shower shape. The probability that a (K) is misidentiied as …

The inclusive production of D (cid:3)(cid:6) mesons in photon-photon collisions has been measured using the OPAL detector at LEP at e + e − centre-of-mass energies p s ee of 183 and 189 GeV. The D (cid:3) + mesons are reconstructed in their decay to D 0 (cid:25) + with the D 0 observed in the two decay modes K − (cid:25) + and K − (cid:25) + (cid:25) − (cid:25) + . After background subtraction, 100 : 4 (cid:6) 12 : 6 (stat) D (cid:3)(cid:6) mesons have been selected in events without observed scattered beam electron (\anti-tagged") and 29 : 8 (cid:6) 5 : 9 (stat) D (cid:3)(cid:6) mesons in events where one beam electron is scattered into the detector (\single-tagged"). Direct and single-resolved events are studied separately. Di(cid:11)erential cross-sections d (cid:27)= d p D (cid:3) T and d (cid:27)= d j (cid:17) D (cid:3) j as functions of the D (cid:3)(cid:6) transverse momentum p D (cid:3) T and pseudorapidity (cid:17) D (cid:3) are presented in the kinematic region 2 GeV < p D (cid:3) T < 12 GeV and j (cid:17) D (cid:3) j < 1 : 5. They are compared to next-to-leading order (NLO) perturbative QCD calculations. The total cross-section for the process e + e − ! e + e − cc where the charm quarks are produced in the collision of two quasi-real photons is measured to be averaged

The production of charged hadrons and K 0 S mesons in the collisions of quasi-real photons has been measured using the OPAL detector at LEP. The data were taken at e + e − centre-of-mass energies of 161 and 172 GeV. The differential cross-sections as a function of the transverse momentum and the pseudorapidity of the charged hadrons and K 0 S mesons have been compared to the leading order Monte Carlo simulations of PHOJET and PYTHIA and to perturbative next-to-leading order (NLO) QCD calculations. The distributions have been measured in the range 10 < W < 125 GeV of the hadronic invariant mass W. By comparing the transverse momentum distribution of charged hadrons measured in γγ interactions with γ-proton and meson-proton data we find evidence for hard photon interactions in addition to the purely hadronic photon interactions.

An upper limit for the τ –neutrino mass has been determined from the decay τ → 5 π ± ν τ using data collected with the OPAL detector from 1991 to 1995 in e + e − collisions at √ s ≈ M Z . A limit of 43.2 MeV at 95% CL is obtained using a two–dimensional method in the 5 π invariant mass and energy distribution from 22 selected events. Combining this result with OPAL’s previously published measurement using τ + τ − → 3h ± ¯ ν τ + 3h ∓ ν τ decays, a new combined limit of m ν τ < 27.6 MeV (95% CL) is obtained.

This paper describes the measurement of the W boson mass, MW, and decay width, ΓW, from the direct reconstruction of the invariant mass of its decay products in W pair events collected at a mean centre-of-mass energy of √ s=172.12 GeV with the OPAL detector at LEP. Measurements of the W pair production cross-section, the W decay branching fractions and properties of the W decay final states are also described. A total of 120 candidate WW events has been selected for an integrated luminosity of 10.36 pb. The WW production cross-section is measured to be σWW = 12.3±1.3(stat.)±0.3(syst.) pb, consistent with the Standard Model expectation. The WW → qqlνl and WW → qqqq final states are used to obtain a direct measurement of ΓW = 1.30 −0.55(stat.) ± 0.18(syst.) GeV. Assuming the Standard Model relation between MW and ΓW, the W boson mass is measured to be MW = 80.32 ± 0.30(stat.) ± 0.09(syst.) GeV. The event properties of the fullyhadronic decays of WW events are compared to those of the semi-leptonic decays. At the current level of precision there is no evidence for effects of colour reconnection in the observables studied. Combining data recorded by OPAL at √ s ∼ 161–172 GeV, the W boson branching fraction to hadrons is determined to be 69.8 −3.2(stat.)±0.7(syst.)%, consistent with the prediction of the Standard Model. The combined mass measurement from direct reconstruction and from the WW production crosssections measured at √ s ∼ 161 and √s ∼ 172 GeV is MW = 80.35 ± 0.24(stat.) ± 0.07(syst.) GeV. To be submitted to Zeit. Phys. C The OPAL Collaboration K.Ackerstaff, G. Alexander, J. Allison, N. Altekamp, K.J.Anderson, S.Anderson, S.Arcelli, S.Asai, D. Axen, G. Azuelos, A.H. Ball, E. Barberio, R.J. Barlow, R. Bartoldus, J.R.Batley, S. Baumann, J. Bechtluft, C.Beeston, T.Behnke, A.N. Bell, K.W.Bell, G. Bella, S. Bentvelsen, S. Bethke, O.Biebel, A. Biguzzi, S.D. Bird, V.Blobel, I.J. Bloodworth, J.E.Bloomer, M.Bobinski, P. Bock, D. Bonacorsi, M. Boutemeur, B.T. Bouwens, S.Braibant, L. Brigliadori, R.M.Brown, H.J. Burckhart, C.Burgard, R.Bürgin, P. Capiluppi, R.K.Carnegie, A.A. Carter, J.R. Carter, C.Y.Chang, D.G. Charlton, D. Chrisman, P.E.L. Clarke, I. Cohen, J.E.Conboy, O.C. Cooke, M. Cuffiani, S.Dado, C.Dallapiccola , G.M. Dallavalle , R. Davis, S.De Jong, L.A. del Pozo, K.Desch, B. Dienes, M.S.Dixit, E. do Couto e Silva, M.Doucet, E.Duchovni, G.Duckeck, I.P. Duerdoth, D. Eatough, J.E.G.Edwards, P.G. Estabrooks, H.G. Evans, M.Evans, F. Fabbri, M. Fanti, A.A. Faust, F. Fiedler, M.Fierro, H.M. Fischer, I. Fleck, R. Folman, D.G. Fong, M. Foucher, A. Fürtjes, D.I. Futyan, P.Gagnon, J.W.Gary, J.Gascon, S.M.Gascon-Shotkin, N.I. Geddes, C.Geich-Gimbel, T.Geralis, G.Giacomelli, P.Giacomelli, R.Giacomelli, V.Gibson, W.R.Gibson, D.M.Gingrich, D.Glenzinski, J.Goldberg, M.J. Goodrick, W.Gorn, C.Grandi, E.Gross, J.Grunhaus, M.Gruwé, C.Hajdu, G.G. Hanson, M.Hansroul, M.Hapke, C.K.Hargrove, P.A.Hart, C.Hartmann, M.Hauschild, C.M.Hawkes, R.Hawkings, R.J.Hemingway, M.Herndon, G.Herten, R.D.Heuer, M.D. Hildreth, J.C.Hill, S.J.Hillier, P.R.Hobson, R.J.Homer, A.K.Honma, D. Horváth, K.R.Hossain, R.Howard, P. Hüntemeyer, D.E. Hutchcroft, P. Igo-Kemenes, D.C. Imrie, M.R. Ingram, K. Ishii, A. Jawahery, P.W. Jeffreys, H. Jeremie, M. Jimack, A. Joly, C.R. Jones, G. Jones, M. Jones, U. Jost, P. Jovanovic, T.R. Junk, D.Karlen, V.Kartvelishvili, K.Kawagoe, T.Kawamoto, P.I. Kayal, R.K.Keeler, R.G.Kellogg, B.W.Kennedy, J.Kirk, A.Klier, S.Kluth, T.Kobayashi, M.Kobel, D.S.Koetke, T.P.Kokott, M.Kolrep, S.Komamiya, T.Kress, P.Krieger, J. von Krogh, P.Kyberd, G.D. Lafferty, R. Lahmann, W.P. Lai, D. Lanske, J. Lauber, S.R. Lautenschlager, J.G. Layter, D. Lazic, A.M. Lee, E. Lefebvre, D. Lellouch, J. Letts, L. Levinson, S.L. Lloyd, F.K. Loebinger, G.D. Long, M.J. Losty, J. Ludwig, A.Macchiolo, A.Macpherson, M.Mannelli, S.Marcellini, C.Markus, A.J.Martin, J.P.Martin, G.Martinez, T.Mashimo, P.Mättig, W.J.McDonald, J.McKenna, E.A.Mckigney, T.J.McMahon, R.A.McPherson, F.Meijers, S.Menke, F.S.Merritt, H.Mes, J.Meyer, A.Michelini, G.Mikenberg, D.J.Miller, A.Mincer, R.Mir, W.Mohr, A.Montanari, T.Mori, M.Morii, U.Müller, S.Mihara, K. Nagai, I. Nakamura, H.A.Neal, B. Nellen, R. Nisius, S.W.O’Neale, F.G.Oakham, F. Odorici, H.O.Ogren, A.Oh, N.J. Oldershaw, M.J. Oreglia, S.Orito, J. Pálinkás, G. Pásztor, J.R. Pater, G.N. Patrick, J. Patt, M.J. Pearce, R. Perez-Ochoa, S. Petzold, P. Pfeifenschneider, J.E. Pilcher, J. Pinfold, D.E. Plane, P. Poffenberger, B. Poli, A. Posthaus, D.L. Rees, D. Rigby, S. Robertson, S.A. Robins, N.Rodning, J.M.Roney, A.Rooke, E.Ros, A.M. Rossi, P. Routenburg, Y. Rozen, K.Runge, O.Runolfsson, U. Ruppel, D.R. Rust, R.Rylko, K. Sachs, T. Saeki, E.K.G. Sarkisyan, C. Sbarra, A.D. Schaile, O. Schaile, F. Scharf, P. Scharff-Hansen, P. Schenk, J. Schieck, P. Schleper, B. Schmitt, S. Schmitt, A. Schöning, M. Schröder, H.C. Schultz-Coulon, M. Schumacher, C. Schwick, W.G. Scott, T.G. Shears, B.C. Shen, C.H. Shepherd-Themistocleous, P. Sherwood, G.P. Siroli, A. Sittler, A. Skillman, A. Skuja, A.M. Smith, G.A. Snow, R. Sobie, S. Söldner-Rembold, R.W. Springer, M. Sproston, K. Stephens, J. Steuerer, B. Stockhausen, K. Stoll, D. Strom, P. Szymanski, R.Tafirout, S.D. Talbot, S. Tanaka, P. Taras, S. Tarem, R. Teuscher, M. Thiergen, M.A. Thomson, E. von Törne, S. Towers, I. Trigger, Z. Trócsányi, E.Tsur, A.S.Turcot, M.F. Turner-Watson, P. Utzat, R.Van Kooten, M.Verzocchi, P. Vikas, E.H.Vokurka, H. Voss, F.Wäckerle ,