Search for pair production of light scalar top quarks in pp collisions at √s = 1.8 TeV

V. M. Abazov, B. Abbott, A. Abdesselam, M. Abolins, V. Abramov, B. S. Acharya, D. L. Adams, M. Adams, S. N. Ahmed, G. D. Alexeev, A. Alton, G. A. Alves, Y. Arnoud, C. Avila, V. V. Babintsev, L. Babukhadia, T. C. Bacon, A. Baden, S. Baffioni, B. BaldinP. W. Balm, S. Banerjee, E. Barberis, P. Baringer, J. Barreto, J. F. Bartlett, U. Bassler, D. Bauer, A. Bean, F. Beaudette, M. Begel, A. Belyaev, S. B. Beri, G. Bernardi, I. Bertram, A. Besson, R. Beuselinck, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Bhattacharjee, G. Blazey, F. Blekman, S. Blessing, A. Boehnlein, N. I. Bojko, T. A. Bolton, F. Borcherding, K. Bos, T. Bose, A. Brandt, G. Briskin, R. Brock, G. Brooijmans, A. Bross, D. Buchholz, M. Buehler, V. Buescher, V. S. Burtovoi, J. M. Butler, F. Canelli, W. Carvalho, D. Casey, H. Castilla-Valdez, D. Chakraborty, K. M. Chan, S. V. Chekulaev, D. K. Cho, S. Choi, S. Chopra, D. Claes, A. R. Clark, B. Connolly, W. E. Cooper, D. Coppage, S. Crépé-Renaudin, M. A C Cummings, D. Cutts, H. da Motta, G. A. Davis, K. De, S. J. de Jong, M. Demarteau, R. Demina, P. Demine, D. Denisov, S. P. Denisov, S. Desai, H. T. Diehl, M. Diesburg, S. Doulas, L. V. Dudko, L. Duflot, S. R. Dugad, A. Duperrin, A. Dyshkant, D. Edmunds, J. Ellison, J. T. Eltzroth, V. D. Elvira, R. Engelmann, S. Eno, P. Ermolov, O. V. Eroshin, J. Estrada, H. Evans, V. N. Evdokimov, T. Ferbel, F. Filthaut, H. E. Fisk, M. Fortner, H. Fox, S. Fu, S. Fuess, E. Gallas, A. N. Galyaev, M. Gao, V. Gavrilov, R. J. Genik, K. Genser, C. E. Gerber, Y. Gershtein, G. Ginther, B. Gómez, P. I. Goncharov, K. Gounder, A. Goussiou, P. D. Grannis, H. Greenlee, Z. D. Greenwood, S. Grinstein, L. Groer, S. Grünendahl, S. N. Gurzhiev, G. Gutierrez, P. Gutierrez, N. J. Hadley, H. Haggerty, S. Hagopian, V. Hagopian, R. E. Hall, C. Han, S. Hansen, J. M. Hauptman, C. Hebert, D. Hedin, J. M. Heinmiller, A. P. Heinson, U. Heintz, M. D. Hildreth, R. Hirosky, J. D. Hobbs, B. Hoeneisen, J. Huang, Y. Huang, I. Iashvili, R. Illingworth, A. S. Ito, M. Jaffré, S. Jain, R. Jesik, K. Johns, M. Johnson, A. Jonckheere, H. Jöstlein, A. Juste, W. Kahl, S. Kahn, E. Kajfasz, A. M. Kalinin, D. Karmanov, D. Karmgard, R. Kehoe, S. Kesisoglou, A. Khanov, A. Kharchilava, B. Klima, J. M. Kohli, A. V. Kostritskiy, J. Kotcher, B. Kothari, A. V. Kozelov, E. A. Kozlovsky, J. Krane, M. R. Krishnaswamy, P. Krivkova, S. Krzywdzinski, M. Kubantsev, S. Kuleshov, Y. Kulik, S. Kunori, A. Kupco, V. E. Kuznetsov, G. Landsberg, W. M. Lee, A. Leflat, F. Lehner, C. Leonidopoulos, J. Li, Q. Z. Li, J. G R Lima, D. Lincoln, S. L. Linn, J. Linnemann, R. Lipton, A. Lucotte, L. Lueking, C. Lundstedt, C. Luo, A. K A Maciel, R. J. Madaras, V. L. Malyshev, V. Manankov, H. S. Mao, T. Marshall, M. I. Martin, S. E K Mattingly, A. A. Mayorov, R. McCarthy, T. McMahon, H. L. Melanson, A. Melnitchouk, M. Merkin, K. W. Merritt, C. Miao, H. Miettinen, D. Mihalcea, N. Mokhov, N. K. Mondal, H. E. Montgomery, R. W. Moore, Y. D. Mutaf, E. Nagy, M. Narain, V. S. Narasimham, N. A. Naumann, H. A. Neal, J. P. Negret, S. Nelson, A. Nomerotski, T. Nunnemann, D. O'Neil, V. Oguri, N. Oshima, P. Padley, K. Papageorgiou, N. Parashar, R. Partridge, N. Parua, A. Patwa, O. Peters, P. Pétroff, R. Piegaia, B. G. Pope, H. B. Prosper, S. Protopopescu, M. B. Przybycien, J. Qian, S. Rajagopalan, P. A. Rapidis, N. W. Reay, S. Reucroft, M. Ridel, M. Rijssenbeek, F. Rizatdinova, T. Rockwell, C. Royon, P. Rubinov, R. Ruchti, B. M. Sabirov, G. Sajot, A. Santoro, L. Sawyer, R. D. Schamberger, H. Schellman, A. Schwartzman, E. Shabalina, R. K. Shivpuri, D. Shpakov, M. Shupe, R. A. Sidwell, V. Simak, V. Sirotenko, P. Slattery, R. P. Smith, G. R. Snow, J. Snow, S. Snyder, J. Solomon, Y. Song, V. Sorín, M. Sosebee, N. Sotnikova, K. Soustruznik, M. Souza, N. R. Stanton, G. Steinbruück, D. Stoker, V. Stolin, A. Stone, D. A. Stoyanova, M. A. Strang, M. Strauss, M. Strovink, L. Stutte, A. Sznajder, M. Talby, W. Taylor, S. Tentindo-Repond, T. G. Trippe, A. S. Turcot, P. M. Tuts, R. van Kooten, V. Vaniev, N. Varelas, F. Villeneuve-Seguier, A. A. Volkov, A. P. Vorobiev, H. D. Wahl, Z. M. Wang, J. Warchol, G. Watts, M. Wayne, H. Weerts, A. White, D. Whiteson, D. A. Wijngaarden, S. Willis, S. J. Wimpenny, J. Womersley, D. R. Wood, Q. Xu, R. Yamada, T. Yasuda, Y. A. Yatsunenko, K. Yip, J. Yu, M. Zanabria, X. Zhang, B. Zhou, Z. Zhou, M. Zielinski, D. Zieminska, A. Zieminski, V. Zutshi, E. G. Zverev, A. Zylberstejn

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Abstract

The results of a search for direct pair production of scalar top quarks (t̃), the supersymmetric partners of the top quark were presented. Events containing two or more jets and missing transverse energy, the signature of light scalar top quark decays to charm quarks and neutralinos were investigated. 27 events were observed after the selection, while expecting 31.1±6.4 events from known standard model processes. The results were compared to next-to-leading-order production cross sections, and a significant region of t̃ and neutralino phase space was excluded.

Original languageEnglish (US)
Article number011801
Pages (from-to)011801-1-011801-6
JournalPhysical review letters
Volume93
Issue number1
DOIs
StatePublished - Jul 2 2004

Bibliographical note

Funding Information:
We thank the staffs at Fermilab and collaborating institutions, and acknowledge support from the Department of Energy and National Science Foundation (USA), Commissariat à L’Energie Atomique and CNRS/Institut National de Physique Nucléaire et de Physique des Particules (France), Ministry for Science and Technology and Ministry for Atomic Energy (Russia), CAPES, CNPq, and FAPERJ (Brazil), Departments of Atomic Energy and Science and Education (India), Colciencias (Colombia), CONACyT (Mexico), Ministry of Education and KOSEF (Korea), CONICET and UBACyT (Argentina), The Foundation for Fundamental Research on Matter (The Netherlands), PPARC (United Kingdom), Ministry of Education (Czech Republic), A. P. Sloan Foundation, and the Research Corporation.

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