The ZEUS leading proton spectrometer and its use in the measurement of elastic ρ0 photoproduction at HERA
Zeitschrift Fur Physik C Particles and Fields 73:2 (1997) 253-268
Authors:
M Derrick, D Krakauer, S Magill, D Mikunas, B Musgrave, JR Okrasiński, J Repond, R Stanek, RL Talaga, H Zhang, MCK Mattingly, F Anselmo, P Antonioli, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, P Bruni, G Cara Romeo, G Castellini, M Chiarini, L Cifarelli, F Cindolo, A Contin, M Corradi, I Gialas, P Giusti, G Iacobucci, G Laurenti, G Levi, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, A Pesci, A Polini, G Sartorelli, Y Zamora Garcia, A Zichichi, C Amelung, A Bornheim, J Crittenden, R Deffner, M Eckert, L Feld, A Frey, M Geerts, M Grothe, H Hartmann, K Heinloth, L Heinz, E Hilger, HP Jakob, UF Katz, S Mengel, E Paul, M Pfeiffer, C Rembser, D Schramm, J Stamm, R Wedemeyer, S Campbell-Robson, A Cassidy, WN Cottingham, N Dyce, B Foster, S George, ME Hayes, GP Heath, HF Heath, D Piccioni, DG Roff, RJ Tapper, R Yoshida, M Arneodo, R Ayad, M Capua, A Garfagnini, L Iannotti, M Schioppa, G Susinno, A Caldwell, N Cartiglia, Z Jing, W Liu, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, Q Zhu, P Borzemski, J Chwastowski, A Eskreys, Z Jakubowski, MB PrzybycieńAbstract:
The differential cross section dσ/dt for elastic ρ0 photoproduction, γp → ρ0ρ (ρ0 → π+π-), has been measured in ep interactions at HERA. The squared four-momentum exchanged at the proton vertex, t, has been determined directly by measuring the momentum of the scattered proton using the ZEUS Leading Proton Spectrometer (LPS), a large scale system of silicon micro-strip detectors operating close to the HERA proton beam. The LPS allows the measurement of the momentum of high energy protons scattered at small angles with accuracies of 0.4% for the longitudinal momentum and 5 MeV for the transverse momentum. Photoproduction of ρ0 mesons has been investigated in the interval 0.073 < |t| < 0.40 GeV2, for photon virtualities Q2 < 1 GeV2 and photon-proton centre-of-mass energies W between 50 and 100 GeV. In the measured range, the t distribution exhibits an exponential shape with a slope parameter b = 9.8 ± 0.8 (stat.) ± 1.1 (syst.) GeV-2. The use of the LPS eliminates the contamination from events with diffractive dissociation of the proton into low mass states. © Springler-Verlag 1997.Color coherent radiation in multijet events from p(p)over-bar collisions at √s=1.8 TeV
PHYSICS LETTERS B 414:3-4 (1997) 419-427
Authors:
B Abbott, M Abolins, BS Acharya, I Adam, DL Adams, M Adams, S Ahn, H Aihara, GA Alves, E Amidi, N Amos, EW Anderson, R Astur, MM Baarmand, A Baden, V Balamurali, J Balderston, B Baldin, S Banerjee, J Bantly, JF Bartlett, K Bazizi, A Belyaev, SB Beri, I Bertram, VA Bezzubov, PC Bhat, V Bhatnagar, M Bhattacharjee, N Biswas, G Blazey, S Blessing, P Bloom, A Boehnlein, NI Bojko, F Borcherding, C Boswell, A Brandt, R Brock, A Bross, D Buchholz, VS Burtovoi, JM Butler, W Carvalho, D Casey, Z Casilum, H Castilla-Valdez, D Chakraborty, SM Chang, SV Chekulaev, LP Chen, W Chen, S Choi, S Chopra, BC Choudhary, JH CHristenson, M Chung, D Claes, AR Clark, WG Cobau, J Cochran, WE Cooper, C Cretsinger, D Cullen-Vidal, MAC Cummings, D Cutts, OI Dahl, K Davis, K De, K Del Signore, M Demarteau, D Denisov, SP Denisov, HT Diehl, M Diesburg, G Di Loreto, P Draper, Y Ducros, LV Dudko, SR Dugad, D Edmunds, J Ellison, VD Elvira, R Engelmann, S Eno, G Eppley, P Ermolov, OV Eroshin, VN Evdokimov, T Fahland, M Fatyga, MK Fatyga, S Feher, D Fein, T Ferbel, G Finocchiaro, HE Fisk, Y Fisyak, E Flattum, GE Forden, M Fortner, KC Frame, S Fuess, E Gallas, AN Galyaev, P Gartung, TL Geld, RJ Genik, K Genser, CE Gerber, B Gibbard, S Glenn, B Gobbi, M Goforth, A Goldschmidt, B Gomez, G Gomez, PI Goncharov, JLG Solis, H Gordon, LT Goss, K Gounder, A Goussiou, N Graf, PD Grannis, DR Green, J Green, H Greenlee, G Grim, S Grinstein, N Grossman, P Grudberg, S Grunendahl, G Guglielmo, JA Guida, JM Guida, A Gupta, SN Gurzhiev, P Gutierrez, YE Gutnikov, NJ Hadley, H Haggerty, S Hagopian, V Hagopian, KS Hahn, RE Hall, P Hanlet, S Hansen, JM Hauptman, D Hedin, AP Heinson, U Heintz, R Hernandez-Montoya, T Heuring, R Hirosky, JD Hobbs, B Hoeneisen, JS Hoftun, F Hsieh, T Hu, T Hu, T Huehn, AS Ito, E James, J Jaques, SA Jerger, R Jesik, JZY Jiang, T JOffe-Minor, K Johns, M Johnson, A Jonckheere, M Jones, H Jostlein, SY Jun, CK Jung, S Kahn, G Kalbfleisch, JS Kang, D Karmgard, R Kehoe, ML Kelly, CL Kim, SK Kim, A KLatchko, B Klima, C Klopfenstein, VI Klyukhin, VI Kochetkov, JM Kohli, D Koltick, AV Kostritskiy, J Kotcher, AV Kotwal, J Kourlas, AV Kozelov, EA Kozlovski, J Krane, MR Krishnaswamy, S Krzywdzinski, S Kunori, S Lami, H Lan, R Lander, F Landry, G Landsberg, B Lauer, A Leflat, H Li, J Li, QZ Li-Demarteau, JGR Lima, D Lincoln, SL Linn, J Linnemann, R Lipton, YC Liu, F Lobkowicz, SC Loken, S Lokos, L Lueking, AL Lyon, AKA Maciel, RJ Madaras, R Madden, L Magana-Mendoza, S Mani, HS Mao, R Markeloff, T Marshall, MI Martin, KM Mauritz, B May, AA Mayorov, R McCarthy, J McDonald, T McKibben, J McKinely, T McMahon, HL Melanson, M Merkin, KW Merritt, H Miettinen, A Mincer, CS Mishra, N Mokhov, NK Mondal, HE Montgomery, P Mooney, H da Motta, C Murphy, F Nang, M Narain, VS Narasimham, A Narayanan, HA Neal, JP Negret, P Nemethy, M Nicola, D Norman, L Oesch, V Oguri, E Oltman, N Oshima, D Owen, P Padley, M Pang, A Para, YM Park, R Partridge, N Parua, M Paterno, J Perkins, M Peters, R Piegaia, H Piekarz, Y Pischalnikov, VM Podstavkov, BG Pope, HB Prosper, S Protopopescu, J Qian, PZ Quintas, R Raja, S Rajagopalan, O Ramirez, L Rasmussen, S Reucroft, M Rijssenbeek, T Rockwell, NA Roe, P Rubinov, R Ruchti, J Rutherfoord, A Sanchez-Hernandez, A Santoro, L Sawyer, RD Schamberger, H Schellman, J Sculli, E Shabalina, C Shaffer, HC Shankar, RK Shivpuri, M Shupe, H Singh, JB Singh, V Sirotenko, W Smart, RP Smith, R Snihur, GR Snow, J Snow, S Snyder, J Solomon, PM Sood, M Sosebee, N Sotnikova, M Souza, AL Spadafora, RW Stephens, ML Stevenson, D Stewart, F Stichelbaut, DA Stoianova, D Stoker, M Strauss, K Streets, M Strovink, A Sznajder, P Tamburello, J Tarazi, M Tartaglia, TLT Thomas, J Thompson, TG Trippe, PM Tuts, N Varelas, EW Varnes, D Vititoe, AA Volkov, AP Vorobiev, HD Wahl, G Wang, J Warchol, G Watts, M Wayne, H Weerts, A White, JT White, JA Wightman, S Willis, SJ Wimpenny, JVD Wirjawan, J Womersley, E Won, DR Wood, H Xu, R Yamada, P Yamin, J Yang, T Yasuda, P Yepes, C Yoshikawa, S Youssef, J Yu, Y Yu, ZH Zhu, D Zieminska, A Zieminski, EG Zverev, A ZylberstejnDirect measurement of the top quark mass
PHYSICAL REVIEW LETTERS 79:7 (1997) 1197-1202
Authors:
S Abachi, B Abbott, M Abolins, BS Acharya, I Adam, DL Adams, M Adams, S Ahn, H Aihara, GA Alves, E Amidi, N Amos, EW Anderson, R Astur, MM Baarmand, A Baden, V Balamurali, J Balderston, B Baldin, S Banerjee, J Bantly, E Barberis, JF Bartlett, K Bazizi, A Belyaev, SB Beri, I Bertram, VA Bezzubov, PC Bhat, V Bhatnagar, M Bhattacharjee, N Biswas, G Blazey, S Blessing, P Bloom, A Boehnlein, NI Bojko, F Borcherding, J Borders, C Boswell, A Brandt, R Brock, A Bross, D Buchholz, VS Burtovoi, JM Butler, W Carvalho, D Casey, H CastillaValdez, D Chakraborty, SM Chang, SV Chekulaev, LP Chen, W Chen, S Choi, S Chopra, BC Choudhary, JH Christenson, M Chung, D Claes, AR Clark, WG Cobau, J Cochran, WE Cooper, C Cretsinger, D CullenVidal, MAC Cummings, D Cutts, OI Dahl, K Davis, K De, K DelSignore, M Demarteau, D Denisov, SP Denisov, HT Diehl, M Diesburg, G DiLoreto, P Draper, J Drinkard, Y Ducros, LV Dudko, SR Dugad, D Edmunds, J Ellison, VD Elvira, R Engelmann, S Eno, G Eppley, P Ermolov, OV Eroshin, VN Evdokimov, T Fahland, M Fatyga, MK Fatyga, J Featherly, S Feher, D Fein, T Ferbel, G Finocchiaro, HE Fisk, Y Fisyak, E Flattum, GE Forden, M Fortner, KC Frame, S Fuess, E Gallas, AN Galyaev, P Gartung, TL Geld, RJ Genik, K Genser, CE Gerber, B Gibbard, S Glenn, B Gobbi, M Goforth, A Goldschmidt, B Gomez, G Gomez, PI Goncharov, JLG Solis, H Gordon, LT Goss, A Goussiou, N Graf, PD Grannis, DR Green, J Green, H Grenlee, G Grim, S Grinstein, N Grossman, P Grudberg, S Grunendahl, G Guglielmo, JA Guida, JM Guida, A Gupta, SN Gurzhiev, P Gutierrez, YE Gutnikov, NJ Hadley, H Haggerty, S Hagopian, V Hagopian, KS Hahn, RE Hall, S Hansen, JM Hauptman, D Hedin, AP Heinson, U Heintz, R HernandezMontoya, T Heuring, R Hirosky, JD Hobbs, B Hoeneisen, JS Hoftun, F Hsieh, T Hu, T Hu, T Huehn, AS Ito, E James, J Jaques, SA Jerger, R Jesik, JZY Jiang, T JoffeMinor, K Johns, M Johnson, A Jonckheere, M Jones, H Jostlein, SY Jun, CK Jung, S Kahn, G Kalbfleisch, JS Kang, R Kehoe, ML Kelly, CL Kim, SK Kim, A Klatchko, B Klima, C Klopfenstein, VI Klyukhin, VI Kochetkov, JM Kohli, D Koltick, AV Kostritskiy, J Kotcher, AV Kotwal, J Kourlas, AV Kozelov, EA Kozlovski, J Krane, MR Krishnaswamy, S Krzywdzinski, S Kunori, S Lami, H Lan, R Lander, F Landry, G Landsberg, B Lauer, A Leflat, H Li, J Li, QZ LIDemarteau, JGR Lima, D Lincoln, SL Linn, J Linnemann, R Lipton, Q Liu, YC Liu, F Lobkowicz, SC Loken, S Lokos, L Lueking, AL Lyon, AKA Maciel, RJ Madaras, R Madden, L MaganaMendoza, S Mani, HS Mao, R Markeloff, L Markosky, T Marshall, MI Martin, KM Mauritz, B May, AA Mayorov, R McCarthy, J McDonald, T McKibben, J McKinley, T McMahon, HL Melanson, M Merkin, KW Merritt, H Miettinen, A Mincer, JM deMiranda, CS Mishra, N Mokhov, NK Mondal, HE Montgomery, P Mooney, H daMotta, C Murphy, F Nang, M Narain, VS Narasimham, A Narayanan, HA Neal, JP Negret, P Nemethy, D Nesic, M Nicola, D Norman, L Oesch, V Oguri, E Oltman, N Oshima, D Owen, P Padley, M Pang, A Para, YM Park, R Partridge, N Parua, M Paterno, J Perkins, M Peters, R Piegaia, H Piekarz, Y Pischalnikov, VM Podstavkov, BG Pope, HB Prosper, S Protopopescu, D Puseljic, J Qian, PZ Quintas, R Raja, S Rajagopalan, O Ramirez, PA Rapidis, L Rasmussen, S Reucroft, M Rijssenbeek, T Rockwell, NA Roe, P Rubinov, R Ruchti, J Rutherfoord, A SanchezHernandez, A Santoro, L Sawyer, RD Schamberger, H Schellman, J Sculli, E Shabalina, C Shaffer, HC Shankar, RK Shivpuri, M Shupe, H Singh, JB Singh, V Sirotenko, W Smart, A Smith, RP Smith, R Snihur, GR Snow, J Snow, S Snyder, J Solomon, PM Sood, M Sosebee, N Sotnikova, M Souza, AL Spadafora, RW Stephens, ML Stevenson, D Stewart, DA Stoianova, D Stoker, M Strauss, K Streets, M Strovink, A Sznajder, P Tamburello, J Tarazi, M Tartaglia, TLT Thomas, J Thompson, TG Trippe, PM Tuts, N Varelas, EW Varnes, D Vititoe, AA Volkov, AP Vorobiev, HD Wahl, G Wang, J Warchol, G Watts, M Wayne, H Weerts, A White, JT White, JA Wightman, S Willis, SJ Wimpenny, JVD Wirjawan, J Womersley, E Won, DR Wood, H Xu, R Yamada, P Yamin, C Yanagisawa, J Yang, T Yasuda, P Yepes, C Yoshikawa, S Youssef, J Yu, Y Yu, Q Zhu, ZH Zhu, D Zieminska, A Zieminski, EG Zverev, A ZylberstejnLimits on WWZ and WW gamma couplings from p(p)over-bar->e nu jjX events at root s=1.8 TeV
PHYSICAL REVIEW LETTERS 79:8 (1997) 1441-1446
Authors:
B Abbott, M Abolins, BS Acharya, I Adam, DL Adams, M Adams, S Ahn, H Aihara, GA Alves, E Amidi, N Amos, EW Anderson, R Astur, MM Baarmand, A Baden, V Balamurali, J Balderston, B Baldin, S Banerjee, J Bantly, JF Bartlett, K Bazizi, A Belyaev, SB Beri, I Bertram, VA Bezzubov, PC Bhat, V Bhatnagar, M Bhattacharjee, N Biswas, G Blazey, S Blessing, P Bloom, A Boehnlein, NI Bojko, F Borcherding, J Borders, C Boswell, A Brandt, R Brock, A Bross, D Buchholz, VS Burtovoi, JM Butler, W Carvalho, D Casey, Z Casilum, H CastillaValdez, D Chakraborty, SM Chang, SV Chekulaev, LP Chen, W Chen, S Choi, S Chopra, BC Choudhary, JH Christenson, M Chung, D Claes, AR Clark, WG Cobau, J Cochran, WE Cooper, C Cretsinger, D CullenVidal, MAC Cummings, D Cutts, OI Dahl, K Davis, K De, K DelSignore, M Demarteau, D Denisov, SP Denisov, HT Diehl, M Diesburg, G DiLoreto, P Draper, Y Ducros, LV Dudko, SR Dugad, D Edmunds, J Ellison, VD Elvira, R Engelmann, S Eno, G Eppley, P Ermolov, OV Eroshin, VN Evdokimov, T Fahland, M Fatyga, MK Fatyga, J Featherly, S Feher, D Fein, T Ferbel, G Finocchiaro, HE Fisk, Y Fisyak, E Flattum, GE Forden, M Fortner, KC Frame, S Fuess, E Gallas, AN Galyaev, P Gartung, TL Geld, RJ Genik, K Genser, CE Gerber, B Gibbard, S Glenn, B Gobbi, M Goforth, A Goldschmidt, B Gomez, G Gomez, PI Goncharov, JLG Solis, H Gordon, LT Goss, K Gounder, A Goussiou, N Graf, PD Grannis, DR Green, J Green, H Greenlee, G Grim, S Grinstein, N Grossman, P Grudberg, S Grunendahl, G Guglielmo, JA Guida, JM Guida, A Gupta, SN Gurzhiev, P Gutierrez, YE Gutnikov, NJ Hadley, H Haggerty, S Hagopian, V Hagopian, KS Hahn, RE Hall, S Hansen, JM Hauptman, D Hedin, AP Heinson, U Heintz, R HernandezMontoya, T Heuring, R Hirosky, JD Hobbs, B Hoeneisen, JS Hoftun, F Hsieh, T Hu, T Hu, T Huehn, AS Ito, E James, J Jaques, SA Jerger, R Jesik, JZY Jiang, T JoffeMinor, K Johns, M Johnson, A Jonckheere, M Jones, H Jostlein, SY Jun, CK Jung, S Kahn, G Kalbfleisch, JS Kang, R Kehoe, ML Kelly, CL Kim, SK Kim, A Klatchko, B Klima, C Klopfenstein, VI Klyukhin, VI Kochetkov, JM Kohli, D Koltick, AV Kostritskiy, J Kotcher, AV Kotwal, J Kourlas, AV Kozelov, EA Kozlovski, J Krane, MR Krishnaswamy, S Krzywdzinski, S Kunori, S Lami, H Lan, R Lander, F Landry, G Landsberg, B Lauer, A Leflat, H Li, J Li, QZ LiDemarteau, JGR Lima, D Lincoln, SL Linn, J Linnemann, R Lipton, Q Liu, YC Liu, F Lobkowicz, SC Loken, S Lokos, L Lueking, AL Lyon, AKA Maciel, RJ Madaras, R Madden, L MaganaMendoza, S Mani, HS Mao, R Markeloff, L Markosky, T Marshall, MI Martin, KM Mauritz, B May, AA Mayorov, R McCarthy, J McDonald, T McKibben, J McKinley, T McMahon, HL Melanson, M Merkin, KW Merritt, H Miettinen, A Mincer, JM deMiranda, CS Mishra, N Mokhov, NK Mondal, HE Montgomery, P Mooney, H daMotta, C Murphy, F Nang, M Narain, VS Narasimham, A Narayanan, HA Neal, JP Negret, P Nemethy, M Nicola, D Norman, L Oesch, V Oguri, E Oltman, N Oshima, D Owen, P Padley, M Pang, A Para, Y Pischalnikov, VM Podstavkov, BG Pope, HB Prosper, S Protopopescu, J Qian, PZ Quintas, R Raja, S Rajagopalan, O Ramirez, L Rasmussen, S Reucroft, M Rijssenbeek, T Rockwell, NA Roe, P Rubinov, R Ruchti, J Rutheroford, A SanchezHernandez, A Santoro, L Sawyer, RD Schamberger, H Schellman, J Sculli, E Shabalina, C Shaffer, HC Shankar, RK Shivpuri, M Shupe, H Singh, JB Singh, V Sirotenko, W Smart, A Smith, RP Smith, R Snihur, GR Snow, J Snow, S Snyder, J Solomon, PM Sood, M Sosebee, N Sotnikova, M Souza, AL Spadafora, RW Stephens, ML Stevenson, D Stewart, DA Stoianova, D Stoker, M Strauss, K Streets, M Strovink, A Sznajder, P Tamburello, J Tarazi, M Tartaglia, TLT Thomas, J Thompson, TG Trippe, PM Tuts, N Varelas, EW Varnes, D Vititoe, AA Volkov, AP Vorobiev, HD Wahl, G Wang, J Warchol, G Watts, M Wayne, H Weerts, A White, JT White, JA Wightman, S Willis, SJ Wimpenny, JVD Wirjawan, J Womersley, E Won, DR Wood, H Xu, R Yamada, P Yamin, C Yanagisawa, J Yang, T Yasuda, P Yepes, C Yoshikawa, S Youssef, J Yu, Y Yu, ZH Zhu, D Zieminska, A Zieminski, EG Zverev, A ZylberstejnLimits on anomalous WW gamma couplings from p(p)over-bar->W gamma+X events at root s=1.8 TeV
PHYSICAL REVIEW LETTERS 78:19 (1997) 3634-3639