Phys. Rev. D 68, 091101 (2003) [6 pages]
Search for the flavor-changing neutral current decay D0→μ+μ- in pp̅ collisions at sqrt[s]=1.96 TeV
D. Acosta et al. (CDF Collaboration)
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D. Acosta14, T. Affolder7, M. H. Ahn25, T. Akimoto52, M. G. Albrow13, D. Ambrose40, D. Amidei30, A. Anastassov47, K. Anikeev29, A. Annovi41, J. Antos1, M. Aoki52, G. Apollinari13, J.-F. Arguin50, T. Arisawa54, A. Artikov11, T. Asakawa52, W. Ashmanskas2, A. Attal6, F. Azfar38, P. Azzi-Bacchetta39, N. Bacchetta39, H. Bachacou26, W. Badgett13, S. Bailey18, A. Barbaro-Galtieri26, G. Barker23, V. E. Barnes43, B. A. Barnett22, S. Baroiant5, M. Barone15, G. Bauer29, F. Bedeschi41, S. Behari22, S. Belforte51, W. H. Bell17, G. Bellettini41, J. Bellinger55, D. Benjamin12, A. Beretvas13, A. Bhatti45, M. Binkley13, D. Bisello39, M. Bishai13, R. E. Blair2, C. Blocker4, K. Bloom30, B. Blumenfeld22, A. Bocci45, A. Bodek44, G. Bolla43, A. Bolshov29, P. S. L. Booth27, D. Bortoletto43, J. Boudreau42, S. Bourov13, C. Bromberg31, M. Brozovic12, E. Brubaker26, J. Budagov11, H. S. Budd44, K. Burkett18, G. Busetto39, P. Bussey17, K. L. Byrum2, S. Cabrera12, P. Calafiura26, M. Campanelli16, M. Campbell30, A. 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Wagner23, N. Wallace47, T. Walter23, Z. Wan47, M. J. Wang1, S. M. Wang14, B. Ward17, S. Waschke17, D. Waters28, T. Watts47, M. Weber26, W. Wester13, B. Whitehouse53, A. B. Wicklund2, E. Wicklund13, T. Wilkes5, H. H. Williams40, P. Wilson13, B. L. Winer35, P. Wittich40, S. Wolbers13, M. Wolter53, M. Worcester6, S. Worm47, T. Wright30, X. Wu16, F. Würthwein29, A. Wyatt28, A. Yagil13, T. Yamashita36, K. Yamamoto37, U. K. Yang10, W. Yao26, G. P. Yeh13, K. Yi22, J. Yoh13, P. Yoon44, K. Yorita54, T. Yoshida37, I. Yu25, S. Yu40, Z. Yu56, J. C. Yun13, L. Zanello46, A. Zanetti51, I. Zaw18, F. Zetti41, J. Zhou47, A. Zsenei16, 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 Santa Barbara, Santa Barbara, California 93106, USA
8Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain
9Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
10Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
11Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
12Duke University, Durham, North Carolina 27708, USA
13Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
14University of Florida, Gainesville, Florida 32611, USA
15Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
16University of Geneva, CH-1211 Geneva 4, Switzerland
17Glasgow University, Glasgow G12 8QQ, United Kingdom
18Harvard University, Cambridge, Massachusetts 02138, USA
19The Helsinki Group, Helsinki Institute of Physics and Division of High Energy Physics, Department of Physical Sciences, University of Helsinki, FIN-00014 Helsinki, Finland
20Hiroshima University, Higashi-Hiroshima 724, Japan
21University of Illinois, Urbana, Illinois 61801, USA
22The Johns Hopkins University, Baltimore, Maryland 21218, USA
23Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
24High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan
25Center for High Energy Physics, Kyungpook National University, Taegu 702-701, Korea
Seoul National University, Seoul 151-742, Korea
SungKyunKwan University, Suwon 440-746, Korea
26Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
27University of Liverpool, Liverpool L69 7ZE, United Kingdom
28University College London, London WC1E 6BT, United Kingdom
29Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
30University of Michigan, Ann Arbor, Michigan 48109, USA
31Michigan State University, East Lansing, Michigan 48824, USA
32Institution for Theoretical and Experimental Physics, ITEP, Moscow 117259, Russia
33University of New Mexico, Albuquerque, New Mexico 87131, USA
34Northwestern University, Evanston, Illinois 60208, USA
35The Ohio State University, Columbus, Ohio 43210, USA
36Okayama University, Okayama 700-8530, Japan
37Osaka City University, Osaka 588, Japan
38University of Oxford, Oxford OX1 3RH, United Kingdom
39Universitá di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy
40University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
41Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy
42University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
43Purdue University, West Lafayette, Indiana 47907, USA
44University of Rochester, Rochester, New York 14627, USA
45The Rockefeller University, New York, New York 10021, USA
46Instituto Nazionale de Fisica Nucleare, Sezione di Roma, University di Roma I, “La Sapienza,” I-00185 Roma, Italy
47Rutgers University, Piscataway, New Jersey 08855, USA
48Texas A&M University, College Station, Texas 77843, USA
49Texas Tech University, Lubbock, Texas 79409, USA
50Institute of Particle Physics, University of Toronto, Toronto, Canada M5S 1A7
51Istituto Nazionale di Fisica Nucleare, University of Trieste, Trieste, ItalyIstituto Nazionale di Fisica Nucleare, University of Udine, Udine, Italy
52University of Tsukuba, Tsukuba, Ibaraki 305, Japan
53Tufts University, Medford, Massachusetts 02155, USA
54Waseda University, Tokyo 169, Japan
55University of Wisconsin, Madison, Wisconsin 53706, USA
56Yale University, New Haven, Connecticut 06520, USA
Received 19 August 2003; published 21 November 2003
We report on a search for the flavor-changing neutral current decay D0→μ+μ- in pp̅ collisions at sqrt[s]=1.96 TeV using 65 pb-1 of data collected by the CDF II experiment at the Fermilab Tevatron Collider. A displaced-track trigger selects long-lived D0 candidates in the D0→μ+μ- search channel, the kinematically similar D0→π+π- channel used for normalization, the Cabibbo-favored D0→K-π+ channel used to optimize the selection criteria in an unbiased manner, and their charge conjugates. Finding no signal events in the D0→μ+μ- search window, we set an upper limit on the branching fraction B(D0→μ+μ-)<~2.5×10-6 (3.3×10-6) at the 90% (95%) confidence level.
©2003 The American Physical Society
URL: http://link.aps.org/doi/10.1103/PhysRevD.68.091101
DOI: 10.1103/PhysRevD.68.091101
PACS: 13.20.Fc, 14.40.Lb
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