Phys. Rev. Lett.
93,
032001
(2004)
[7 pages]
Search for Bs0→μ+μ- and Bd0→μ+μ- Decays in pp̅ Collisions at √s=1.96 TeV
D. Acousta et al. CDF Collaboration
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D. Acousta15, T. Affolder8, T. Akimoto53, M. G. Albrow14, D. Ambrose42, S. Amerio41, D. Amidei32, A. Anastassov49, K. Anikeev30, A. Annovi43, J. Antos1, M. Aoki53, G. Apollinari14, T. Arisawa55, J.-F. Arguin31, A. Artikov12, W. Ashmanskas2, A. Attal6, F. Azfar40, P. Azzi-Bacchetta41, N. Bacchetta41, H. Bachacou27, W. Badgett14, A. Barbaro-Galtieri27, G. J. Barker24, V. E. Barnes45, B. A. Barnett23, S. Baroiant5, M. Barone16, G. Bauer30, F. Bedeschi43, S. Behari23, S. Belforte52, G. Bellettini43, J. Bellinger57, D. Benjamin13, A. Beretvas14, A. Bhatti47, M. Binkley14, D. Bisello41, M. Bishai14, R. E. Blair2, C. Blocker4, K. Bloom32, B. Blumenfeld23, A. Bocci47, A. Bodek46, G. Bolla45, A. Bolshov30, P. S. L. Booth28, D. Bortoletto45, J. Boudreau44, S. Bourov14, C. Bromberg33, E. Brubaker27, J. Budagov12, H. S. Budd46, K. Burkett14, G. Busetto41, P. Bussey18, K. L. Byrum2, S. Cabrera13, P. Calafiura27, M. Campanelli17, M. Campbell32, A. Canepa45, M. Casarsa52, D. Carlsmith57, S. 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Wagner2, R. L. Wagner14, W. Wagner24, R. Wallny6, T. Walter24, T. Yamashita38, K. Yamamoto39, Z. Wan49, M. J. Wang1, S. M. Wang15, A. Warburton31, B. Ward18, S. Waschke18, D. Waters29, T. Watts49, M. Weber27, W. C Wester, III14, B. Whitehouse54, A. B. Wicklund2, E. Wicklund14, H. H. Williams42, P. Wilson14, B. L. Winer37, P. Wittich42, S. Wolbers14, M. Wolter54, M. Worcester6, S. Worm49, T. Wright32, X. Wu17, F. Würthwein7, A. Wyatt29, A. Yagil14, U. K. Yang11, W. Yao27, G. P. Yeh14, K. Yi23, J. Yoh14, P. Yoon46, K. Yorita55, T. Yoshida39, I. Yu26, S. Yu42, Z. Yu56, J. C. Yun14, L. Zanello48, A. Zanetti52, I. Zaw19, F. Zetti43, J. Zhou49, A. Zsenei17, and S. Zucchelli3 (CDF Collaboration)
1Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China
2Argonne National Laboratory, Argonne, Illinois 60439, USA
3Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy
4Brandeis University, Waltham, Massachusetts 02254, USA
5University of California at Davis, Davis, California 95616, USA
6University of California at Los Angeles, Los Angeles, California 90024, USA
7University of California at San Diego, La Jolla, California 92093, USA
8University of California at Santa Barbara, Santa Barbara, California 93106, USA
9Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain
10Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
11Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
12Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
13Duke University, Durham, North Carolina 27708, USA
14Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
15University of Florida, Gainesville, Florida 32611, USA
16Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
17University of Geneva, CH-1211 Geneva 4, Switzerland
18Glasgow University, Glasgow G12 8QQ, United Kingdom
19Harvard University, Cambridge, Massachusetts 02138, USA
20The Helsinki Group, Helsinki Institute of Physics; and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN-00044, Helsinki, Finland
21Hiroshima University, Higashi-Hiroshima 724, Japan
22University of Illinois, Urbana, Illinois 61801, USA
23The Johns Hopkins University, Baltimore, Maryland 21218, USA
24Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
25High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan
26Center for High Energy Physics, Kyungpook National University, Taegu 7020701, Korea; Seoul National University, Seoul 151-742, Korea; and SungKyunKwan University, Suwon 440-746, Korea
27Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
28University of Liverpool, Liverpool L69 7ZE, United Kingdom
29University College London, London WC1E 6BT, United Kingdom
30Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
31Institute of Particle Physics, McGill University, Montréal, Canada H3A 2T8 and University of Toronto, Toronto, Canada M5S 1A7
32University of Michigan, Ann Arbor, Michigan 48109, USA
33Michigan State University, East Lansing, Michigan 48824, USA
34Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia
35University of New Mexico, Albuquerque, New Mexico 87131, USA
36Northwestern University, Evanston, Illinois 60208, USA
37The Ohio State University, Columbus, Ohio 43210, USA
38Okayama University, Okayama 700-8530, Japan
39Osaka City University, Osaka 588, Japan
40University of Oxford, Oxford OX1 3RH, United Kingdom
41Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, University of Padova, I-35131 Padova, Italy
42University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
43Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy
44University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
45Purdue University, West Lafayette, Indiana 47907, USA
46University of Rochester, Rochester, New York 14627, USA
47The Rockefeller University, New York, New York 10021, USA
48Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University di Roma “La Sapienza,” I-00185 Roma, Italy
49Rutgers University, Piscataway, New Jersey 08855, USA
50Texas A&M University, College Station, Texas 77843, USA
51Texas Tech University, Lubbock, Texas 79409, USA
52Istituto Nazionale di Fisica Nucleare, University of Trieste, Udine, Italy
53University of Tsukuba, Tsukuba, Ibaraki 305, Japan
54Tufts University, Medford, Massachusetts 02155, USA
55Waseda University, Tokyo 169, Japan
56Wayne State University, Detroit, Michigan 48210, USA
57University of Wisconsin, Madison, Wisconsin 53706, USA
58Yale University, New Haven, Connecticut 06520, USA
Received 19 March 2004; published 13 July 2004
We report on a search for Bs0→μ+μ- and Bd0→μ+μ- decays in pp̅ collisions at √s=1.96 TeV using 171 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. The decay rates of these rare processes are sensitive to contributions from physics beyond the standard model. One event survives all our selection requirements, consistent with the background expectation. We derive branching ratio limits of B(Bs0→μ+μ-)<5.8×10-7 and B(Bd0→μ+μ-)<1.5×10-7 at 90% confidence level.
© 2004 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.032001
DOI:
10.1103/PhysRevLett.93.032001
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