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Observation of events with a large rapidity gap in deep inelastic scattering at HERA

Physics Letters B 315:3-4 (1993) 481-493

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, K Desch, B Diekmann, T Doeker, A Frey, M Geerts, G Geitz, 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, D Schramm, R Wedemeyer, A Cassidy, DG Cussans, N Dyce, B Foster, R Gilmore, GP Heath, HF Heath, M Lancaster, TJ Llewellyn, J Malos, CJS Morgado, RJ Tapper, SS Wilson, R Yoshida, RR Rau, M Arneodo, M Schioppa, G Susinno, A Bernstein, A Caldwell, I Gialas, JA Parsons, S Ritz, F Sciulli, PB Straub, L Wai, S Yang, P Borzemski, J Chwastowski, A Dwuraźny, A Eskreys

Abstract:

In deep inelastic, neutral current scattering of electrons and protons at s=296 GeV, we observe in the ZEUS detector events with a large rapidity gap in the hadronic final state. They occur in the region of small Bjorken x and are observed up to Q2 of 100 GeV2. They account for about 5% of the events with Q2≥10 GeV2. Their general properties are inconsistent with the dominant mechanism of deep inelastic scattering, where color is transferred between the scattered quark and the proton remnant, and suggest that the underlying production mechanism is the diffractive dissociation of the virtual photon. © 1993.
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Measurement of the D→ππ branching fractions

Physical Review Letters American Physical Society (APS) 71:13 (1993) 1973-1977

Authors:

M Selen, 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, H Severini, CR Sun, MM Zoeller, G Crawford, CM Daubenmeir, R Fulton, D Fujino, KK Gan, K Honscheid, 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 Fast, 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, J Dominick, S Sanghera, T Skwarnicki, R Stroynowski, M Artuso, D He, M Goldberg, N Horwitz, R Kennett, GC Moneti, F Muheim, Y Mukhin, S Playfer, Y Rozen, S Stone, M Thulasidas, G Vasseur, G Zhu, J Bartelt, SE Csorna, Z Egyed, V Jain, P Sheldon, DS Akerib, B Barish, M Chadha, S Chan, DF Cowen, G Eigen, JS Miller, C O’Grady, 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, S Nakanishi, HN Nelson, TK Nelson, JD Richman, A Ryd, H Tajima, D Schmidt, D Sperka, MS Witherell, M Procario, S Yang, R Balest, K Cho, 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, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, CD Jones, SL Jones, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, JR Patterson, D Peterson, D Riley, S Salman, M Sapper, H Worden, F Würthwein, P Avery, A Freyberger, J Rodriguez, R Stephens, J Yelton, D Cinabro, S Henderson, K Kinoshita, T Liu, M Saulnier, F Shen, R Wilson, H Yamamoto
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Measurement of the decay τ-→π-π+π-2π0ντ

Physical Review Letters American Physical Society (APS) 71:12 (1993) 1791-1795

Authors:

D Bortoletto, DN Brown, J Fast, 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, J Dominick, S Sanghera, T Skwarnicki, R Stroynowski, M Artuso, D He, M Goldberg, N Horwitz, R Kennett, GC Moneti, F Muheim, Y Mukhin, S Playfer, Y Rozen, S Stone, M Thulasidas, G Vasseur, G Zhu, J Bartelt, SE Csorna, Z Egyed, V Jain, P Sheldon, DS Akerib, B Barish, M Chadha, S Chan, DF Cowen, G Eigen, JS Miller, C O’Grady, 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, S Nakanishi, HN Nelson, TK Nelson, JD Richman, A Ryd, H Tajima, D Schmidt, D Sperka, MS Witherell, M Procario, S Yang, R Balest, K Cho, M Dauodi, 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, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, CD Jones, SL Jones, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, JR Patterson, D Peterson, D Riley, S Salman, M Sapper, H Worden, F Würthwein, P Avery, A Freyberger, J Rodriguez, R Stephens, J Yelton, D Cinabro, S Henderson, K Kinoshita, T Liu, M Saulnier, F Shen, R Wilson, H Yamamoto, M Selen, 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, H Severini, CR Sun, MM Zoeller, G Crawford, CM Daubenmier, R Fulton, D Fujino, KK Gan, K Honscheid, 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
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Two measurements of B0B¯0 mixing

Physical Review Letters American Physical Society (APS) 71:11 (1993) 1680-1684

Authors:

J Bartelt, SE Csorna, Z Egyed, V Jain, P Sheldon, DS Akerib, B Barish, M Chadha, S Chan, DF Cowen, G Eigen, JS Miller, C O’Grady, 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, S Nakanishi, HN Nelson, TK Nelson, JD Richman, A Ryd, H Tajima, D Schmidt, D Sperka, MS Witherell, M Procario, S Yang, R Balest, K Cho, 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, CD Jones, SL Jones, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, JR Patterson, D Peterson, D Riley, S Salman, M Sapper, 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, M Selen, 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, CM Daubenmier, R Fulton, D Fujino, KK Gan, K Honscheid, 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 Fast, 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, J Dominick, S Sanghera, T Skwarnicki, R Stroynowski, M Artuso, D He, M Goldberg, N Horwitz, R Kennett, GC Moneti, F Muheim, Y Mukhin, S Playfer, Y Rozen, S Stone, M Thulasidas, G Vasseur, G Zhu
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Measurement of the ratio scrB(D+→π0l+ν)/scrB(D+→K¯0l+ν)

Physical Review Letters American Physical Society (APS) 71:9 (1993) 1311-1315

Authors:

MS Alam, IJ Kim, B Nemati, J O’Neill, H Severini, CR Sun, MM Zoeller, G Crawford, CM Daubenmier, R Fulton, D Fujino, KK Gan, K Honscheid, 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 Fast, 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, J Dominick, S Sanghera, T Skwarnicki, R Stroynowski, M Artuso, D He, M Goldberg, N Horwitz, R Kennett, GC Moneti, F Muheim, Y Mukhin, S Playfer, Y Rozen, S Stone, M Thulasidas, G Vasseur, G Zhu, J Bartelt, SE Csorna, Z Egyed, V Jain, P Sheldon, DS Akerib, B Barish, M Chadha, S Chan, DF Cowen, G Eigen, JS Miller, C O’Grady, 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, S Nakanishi, HN Nelson, TK Nelson, JD Richman, A Ryd, H Tajima, D Schmidt, D Sperka, MS Witherell, M Procario, S Yang, R Balest, K Cho, 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, M Garcia-Sciveres, B Geiser, B Gittelman, SW Gray, DL Hartill, BK Heltsley, CD Jones, SL Jones, J Kandaswamy, N Katayama, PC Kim, DL Kreinick, GS Ludwig, J Masui, J Mevissen, NB Mistry, CR Ng, E Nordberg, M Ogg, JR Patterson, D Peterson, D Riley, S Salman, M Sapper, H Worden, F Würthwein, P Avery, A Freyberger, J Rodriguez, R Stephens, J Yelton, D Cinabro, S Henderson, K Kinoshita, T Liu, M Saulnier, F Shen, R Wilson, H Yamamoto, M Selen, 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
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