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Observation of diffractively produced W and Z bosons in $\bar{p}p$ collisions at $\sqrt s$ = 1800 GeV
Authors :
Abazov, V.M. Abbott, B. Abdesselam, Abdelmalek Abolins, M. Abramov, V. Acharya, B.S. Adams, D.L. Adams, M. Ahmed, S.N. Alexeev, G.D. Alton, A. Alves, G.A. Anderson, E.W. Arnoud, Y. Avila, C. Babintsev, V.V. Babukhadia, L. Bacon, T.C. Baden, A. Baffioni, S. Baldin, B. Balm, P.W. Banerjee, S. Barberis, E. Baringer, P. Barreto, J. Bartlett, J.F. Bassler, U. Bauer, D. Bean, A. Beaudette, F. Begel, M. Belyaev, A. Beri, S.B. Bernardi, G. Bertram, I. Besson, A. Beuselinck, R. Bezzubov, V.A. Bhat, P.C. Bhatnagar, V. Bhattacharjee, M. Blazey, G. Blekman, F. Blessing, S. Boehnlein, A. Bojko, N.I. Bolton, T.A. Borcherding, F. Bos, K. Bose, T. Brandt, A. Briskin, G. Brock, R. Brooijmans, G. Bross, A. Buchholz, D. Buehler, M. Buescher, V. Burtovoi, V.S. Butler, J.M. Canelli, F. Carvalho, W. Casey, D. Castilla-Valdez, H. Chakraborty, D. Chan, K.M. Chekulaev, S.V. Cho, D.K. Choi, S. Chopra, S. Claes, D. Clark, A.R. Coney, L. Connolly, B. Cooper, W.E. Coppage, D. Crepe-Renaudin, S. Cummings, M.A.C. Cutts, D. Da Motta, H. Davis, G.A. De, K. De Jong, S.J. Demarteau, M. Demina, R. Demine, P. Denisov, D. Denisov, S.P. Desai, S. Diehl, H.T. Diesburg, M. Doulas, S. Dudko, L.V. Duensing, S. Duflot, L. Dugad, S.R. Duperrin, A. Dyshkant, A. Edmunds, D. Ellison, J. Eltzroth, J.T. Elvira, V.D. Engelmann, R. Eno, S. Eppley, G. Ermolov, P. Eroshin, O.V. Estrada, J. Evans, H. Evdokimov, V.N. Fein, D. Ferbel, T. Filthaut, F. Fisk, H.E. Fleuret, F. Fortner, M. Fox, H. Fu, S. Fuess, S. Gallas, E. Galyaev, A.N. Gao, M. Gavrilov, V. Genik II, R.J. Genser, K. Gerber, C.E. Gershtein, Y. Ginther, G. Gomez, B. Goncharov, P.I. Gordon, H. Gounder, K. Goussiou, A. Graf, N. Grannis, P.D. Green, J.A. Greenlee, H. Greenwood, Z.D. Grinstein, S. Groer, L. Grunendahl, S. Gurzhev, S.N. Gutierrez, G. Gutierrez, P. Hadley, N.J. Haggerty, H. Hagopian, S. Hagopian, V. Hall, R.E. Han, C. Hansen, Scott Hauptman, J.M. Hebert, Christian Hedin, D. Heinmiller, J.M. Heinson, A.P. Heintz, U. Hildreth, M.D. Hirosky, R. Hobbs, J.D. Hoeneisen, B. Huang, J. Huang, Yue Iashvili, I. Illingworth, R. Ito, A.S. Jaffre, M. Jain, S. Jesik, R. Johns, K. Johnson, M. Jonckheere, A. Jostlein, H. Juste, A. Kahl, W. Kahn, S. Kajfasz, E. Kalinin, A.M. Karmanov, D. Karmgard, D. Kehoe, R. Khanov, A. Kharchilava, A. Klima, B. Kohli, J.M. Kostritskiy, A.V. Kotcher, J. Kothari, B. Kozelov, A.V. Kozlovsky, E.A. Krane, J. Krishnaswamy, M.R. Krivkova, P. Krzywdzinski, S. Kubantsev, M. Kuleshov, S. Kulik, Y. Kunori, S. Kupco, A. Kuznetsov, V.E. Landsberg, G. Lee, W.M. Leflat, A. Lehner, F. Leonidopoulos, C. Li, J. Li, Q.Z. Lima, J.G.R. Lincoln, D. Linn, S.L. Linnemann, J. Lipton, R. Lucotte, A. Lueking, L. Lundstedt, C. Luo, C. Maciel, A.K.A. Madaras, R.J. Malyshev, V.L. Manankov, V. Mao, H.S. Marshall, T. Martin, M.I. Mauritz, K. Mayorov, A.A. McCarthy, R. McMahon, T. Melanson, H.L. Merkin, M. Merritt, K.W. Miao, C. Miettinen, H. Mihalcea, D. Mokhov, N. Mondal, N.K. Montgomery, H.E. Moore, R.W. Mutaf, Y.D. Nagy, E. Nang, F. Narain, M. Narasimham, V.S. Naumann, N.A. Neal, H.A. Negret, J.P. Nomerotski, A. Nunnemann, T. O'Neil, D. Oguri, V. Olivier, B. Oshima, N. Padley, P. Papageorgiou, K. Parashar, N. Partridge, R. Parua, N. Patwa, A. Peters, O. Petroff, P. Piegaia, R. Pope, B.G. Prosper, H.B. Protopopescu, S. Przybycien, M.B. Qian, J. Raja, R. Rajagopalan, S. Rapidis, P.A. Reay, N.W. Reucroft, S. Ridel, M. Rijssenbeek, M. Rizatdinova, F. Rockwell, T. Royon, C. Rubinov, P. Ruchti, R. Sabirov, B.M. Sajot, G. Santoro, A. Sawyer, L. Schamberger, R.D. Schellman, H. Schwartzman, A. Shabalina, E. Shivpuri, R.K. Shpakov, D. Shupe, M. Sidwell, R.A. Simak, V. Sirotenko, V. Slattery, P. Smith, R.P. Snow, G.R. Snow, J. Snyder, S. Solomon, J. Song, Y. Sorn, V. Sosebee, M. Sotnikova, N. Soustruznik, K. Souza, M. Stanton, N.R. Steinbruck, G. Stoker, D. Stolin, V. Stone, A. Stoyanova, D.A. Strang, M.A. Strauss, M. Strovink, M. Stutte, L. Sznajder, A. Talby, M. Taylor, W. Tentindo-Repond, S. Tripathi, S.M. Trippe, T.G. Turcot, A.S. Tuts, P.M. Van Kooten, R. Vanev, V. Varelas, N. Villeneuve-Seguier, F. Volkov, A.A. Vorobev, A.P. Wahl, H.D. Wang, Z.M. Warchol, J. Watts, G. Wayne, M. Weerts, H. White, A. Whiteson, D. Wijngaarden, D.A. Willis, S. Wimpenny, S.J. Womersley, J. Wood, D.R. Xu, Q. Yamada, R. Yamin, P. Yasuda, T. Yatsunenko, Y.A. Yip, K. Yu, J. Zanabria, M. Zhang, X. Zheng, H. Zhou, B. Zhou, Z. Zielinski, M. Zieminska, D. Zieminski, A. Zutshi, V. Zverev, E.G. Zylberstejn, A. Laboratoire de l'Accélérateur Linéaire (LAL) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique Subatomique et de Cosmologie (LPSC) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS) Centre de Physique des Particules de Marseille (CPPM) Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS) D0 Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS) Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC)
Source :
Physics Letters B, Physics Letters B, 2003, 574, pp.169-179. ⟨10.1016/j.physletb.2003.09.001⟩, Physics Letters B, Elsevier, 2003, 574, pp.169-179. ⟨10.1016/j.physletb.2003.09.001⟩
Publication Year :
2003
Publisher :
HAL CCSD, 2003.
Abstract
Using the D0 detector, we have observed events produced in pbar-p collisions that contain W or Z bosons in conjunction with very little energy deposition (``rapidity gaps'') in large forward regions of the detector. The fraction of W boson events with a rapidity gap (a signature for diffraction) is 0.89\pm^{0.19}_{0.17}%, and the probability that the non-diffractive background fluctuated to yield the observed diffractive signal is 3 x 10^{-14}, corresponding to a significance of 7.5 sigma. The Z boson sample has a gap fraction of 1.44 \pm^{0.61}_{0.52}%, with a significance of 4.4 sigma. The diffractive events have very similar properties to the more common non-diffractive component.<br />Comment: 14 pages, 5 figures, submitted to PLB
Details
Language :
English
ISSN :
03702693
Database :
OpenAIRE
Journal :
Physics Letters B, Physics Letters B, 2003, 574, pp.169-179. ⟨10.1016/j.physletb.2003.09.001⟩, Physics Letters B, Elsevier, 2003, 574, pp.169-179. ⟨10.1016/j.physletb.2003.09.001⟩
Accession number :
edsair.doi.dedup.....0916f68fde36ef4d26de1d012c917f9c