ATLAS

Research group

Research theme

Sub department

About

Related research groups

Search for leptoquarks with the ZEUS detector

Physics Letters B 306:1-2 (1993) 173-186

Authors:

M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, R Ayad, 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, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, Q Lin, B Lisowski, G Maccarrone, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, H Dabbous, K Desch, B Diekmann, T Doeker, M Geerts, G Geitz, B Gutjahr, H Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, S Kramarczyk, M Kückes, A Mass, S Mengel, J Mollen, D Monaldi, H Müsch, E Paul, R Schattevoy, JL Schneider, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, HF Fawcett, B Foster, R Gilmore, GP Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, RR Rau, M Arneodo, T Barillari, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, J Chwastowski, A Dwuraźny, A Eskreys, Z Jakubowski

Abstract:

A search for any resonant state coupled to an electron and a proton constituent has been performed using collisions of electron and proton beams at HERA. In a sample with integrated luminosity of 26 nb-1, no evidence has been found for production of leptoquarks with decays to e- + jet or ν + je to electron and quark have been determined for masses above 25 GeV. For example, scalar isosinglet leptoquarks (S0) with electroweak coupling strength to (e-u) states are ruled out at the 95% confidence level for masses below 168 GeV for left-handed couplings and below 176 GeV for right-handed couplings. © 1993.
More details from the publisher
More details

Search for exclusive b→u semileptonic decays of B mesons

Physical Review Letters American Physical Society (APS) 70:18 (1993) 2681-2685

Authors:

A Bean, J Gronberg, R Kutschke, S Menary, RJ Morrison, HN Nelson, JD Richman, H Tajima, D Schmidt, D Sperka, MS Witherell, M Procario, S Yang, R Ballest, M Daoudi, WT Ford, DR Johnson, K Lingel, M Lohner, P Rankin, JG Smith, JP Alexander, C Bebek, K Berkelman, D Besson, TE Browder, DG Cassel, HA Cho, DM Coffman, PS Drell, R Ehrlich, RS Galik, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, K Honscheid, CD Jones, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, C O’Grady, JR Patterson, D Peterson, D Riley, M Sapper, M Selen, H Worden, M Worris, F Würthwein, P Avery, A Freyberger, J Rodriguez, R Stephens, J Yelton, D Cinabro, S Henderson, K Kinoshita, T Liu, M Saulnier, R Wilson, H Yamamoto, AJ Sadoff, R Ammar, S Ball, P Baringer, D Coppage, N Copty, R Davis, N Hancock, M Kelly, N Kwak, H Lam, Y Kubota, M Lattery, JK Nelson, S Patton, D Perticone, R Poling, V Savinov, S Schrenk, R Wang, MS Alam, IJ Kim, B Nemati, JJ O’Neill, V Romero, H Severini, CR Sun, MM Zoeller, G Crawford, R Fulton, KK Gan, H Kagan, R Kass, J Lee, R Malchow, F Morrow, Y Skovpen, M Sung, C White, J Whitmore, P Wilson, F Butler, X Fu, G Kalbfleisch, M Lambrecht, WR Ross, P Skubic, J Snow, PL Wang, M Wood, D Bortoletto, DN Brown, J Dominick, RL McIlwain, T Miao, DH Miller, M Modesitt, SF Schaffner, EI Shibata, IPJ Shipsey, PN Wang, M Battle, J Ernst, H Kroha, S Roberts, K Sparks, EH Thorndike, CH Wang, S Sanghera, T Skwarnicki, R Stroynowski, M Artuso, M Goldberg, N Horwitz, R Kennett, GC Moneti, F Muheim, S Playfer, Y Rozen, P Rubin, S Stone, M Thulasidas, G Zhu, AV Barnes, J Bartelt, SE Csorna, Z Egyed, V Jain, P Sheldon, DS Akerib, B Barish, M Chadha, S Chan, DF Cowen, G Eigen, JS Miller, J Urheim, AJ Weinstein, D Acosta, M Athanas, G Masek, B Ong, H Paar, M Sivertz
More details from the publisher
More details
More details

Measurement of the τ-lepton mass

Physical Review D American Physical Society (APS) 47:9 (1993) r3671-r3675

Authors:

R Balest, M Daoudi, WT Ford, DR Johnson, K Lingel, M Lohner, P Rankin, JG Smith, JP Alexander, C Bebek, K Berkelman, D Besson, TE Browder, DG Cassel, HA Cho, DM Coffman, PS Drell, R Ehrlich, RS Galik, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, K Honscheid, CD Jones, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, C O'Grady, JR Patterson, D Peterson, D Riley, M Sapper, M Selen, H Worden, M Worris, F Würthwein, P Avery, A Freyberger, J Rodriguez, R Stephens, J Yelton, D Cinabro, S Henderson, K Kinoshita, T Liu, M Saulnier, R Wilson, H Yamamoto, AJ Sadoff, R Ammar, S Ball, P Baringer, D Coppage, N Copty, R Davis, N Hancock, M Kelly, N Kwak, H Lam, Y Kubota, M Lattery, JK Nelson, S Patton, D Perticone, R Poling, V Savinov, S Schrenk, R Wang, MS Alam, IJ Kim, B Nemati, JJ O'Neill, V Romero, H Severini, CR Sun, MM Zoeller, G Crawford, R Fulton, KK Gan, H Kagan, R Kass, J Lee, R Malchow, F Morrow, Y Skovpen, M Sung, C White, J Whitmore, P Wilson, F Butler, X Fu, G Kalbfleisch, M Lambrecht, WR Ross, P Skubic, J Snow, PL Wang, M Wood, D Bortoletto, DN Brown, J Dominick, RL McIlwain, T Miao, DH Miller, M Modesitt, SF Schaffner, EI Shibata, IPJ Shipsey, PN Wang, M Battle, J Ernst, H Kroha, S Roberts, K Sparks, EH Thorndike, CH Wang, S Sanghera, T Skwarnicki, R Stroynowski, M Artuso, M Goldberg, N Horwitz, R Kennett, GC Moneti, F Muheim, S Playfer, Y Rozen, P Rubin, S Stone, M Thulasidas, G Zhu, AV Barnes, J Bartelt, SE Csorna, Z Egyed, V Jain, P Sheldon, DS Akerib, B Barish, M Chadha, S Chan, DF Cowen, G Eigen, JS Miller, J Urheim, AJ Weinstein, D Acosta, M Athanas, G Masek, B Ong, H Paar, M Sivertz, A Bean, J Gronberg, R Kutschke, S Menary, RJ Morrison, HN Nelson, JD Richman, H Tajima, D Schmidt, MS Witherell, M Procario, S Yang
More details from the publisher
More details

The design and function of a radiation tolerant silicon tracker for an LHC experiment

Nuclear and Particle Physics Proceedings Elsevier 32 (1993) 250-259

Authors:

CERN Detector RD Collaboration RD-2, F Anghinolfi, P Aspell, R Bardos, SJ Bates, R Bonino, D Campbell, A Chilingarov, AG Clark, N Claussen, C Couyoumtzelis, E Fretwurst, O Gildemeister, M Glaser, G Gorfine, C Göβling, R Hawkings, EHM Heijne, P Jarron, F Lemeilleur, C Leroy, G Lindström, P Lubrano, G Moorhead, DJ Munday, P Murray, G Nawrath, E Occelli, H Pagel, B Papendick, MA Parker, S Pilath, A Poppleton, A Reichold, J Rioux, A Rolf, M Rouger, P Roy, JC Santiard, P Scampoli, T Schulz, P Seller, R Spiwoks, G Taylor, J Teiger, E Tsesmelis, S Tovey, H Verweij, A Weidberg, T Weiβe, X Wu, R Wunstorf
More details from the publisher
More details

Initial study of deep inelastic scattering with ZEUS at HERA

Physics Letters B 303:1-2 (1993) 183-197

Authors:

M Derrick, D Krakauer, S Magill, B Musgrave, J Repond, S Repond, R Stanek, RL Talaga, J Thron, F Arzarello, R Ayad, G Barbagli, 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, F Ciralli, A Contin, S D'Auria, C Del Papa, F Frasconi, P Giusti, G Iacobucci, G Laurenti, G Levi, Q Lin, B Lisowski, G Maccarrone, A Margotti, T Massam, R Nania, C Nemoz, F Palmonari, G Sartorelli, R Timellini, Y Zamora Garcia, A Zichichi, A Bargende, J Crittenden, H Dabbous, K Desch, B Diekmann, T Doeker, M Geerts, G Geitz, B Gutjahr, H Hartmann, J Hartmann, D Haun, K Heinloth, E Hilger, HP Jakob, S Kramarczyk, M Kückes, A Mass, S Mengel, J Mollen, D Monaldi, H Müsch, E Paul, R Schattevoy, JL Schneider, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, HF Fawcett, B Foster, R Gilmore, GP Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, RR Rau, T Barillari, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, W Burkot, A Eskreys, K Piotrzkowski

Abstract:

Results are presented on neutral current, deep inelastic scattering measured in collisions of 26.7 GeV electrons and 820 GeV protons. The events typically populate a range in Q2 from 10 to 100 GeV2. The values of x extend down to x ∼ 10-4 which is two orders of magnitude lower than previously measured at such Q2 values in fixed target experiments. The measured cross sections are in accord with the extrapolations of current parametrisations of parton distributions. © 1993.
More details from the publisher
More details