Phys. Rev. Lett.
74,
4988–4992
(1995)
Measurement of the Bs Meson Lifetime
F. Abe et al. (CDF Collaboration)
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F. Abe13, M. G. Albrow7, S. R. Amendolia23, D. Amidei16, J. Antos28, C. Anway-Wiese4, G. Apollinari26, H. Areti7, M. Atac7, P. Auchincloss25, F. Azfar21, P. Azzi20, N. Bacchetta18, W. Badgett16, M. W. Bailey18, J. Bao35, P. de Barbaro25, A. Barbaro-Galtieri14, V. E. Barnes24, B. A. Barnett12, P. Bartalini23, G. Bauer15, T. Baumann9, F. Bedeschi23, S. Behrends3, S. Belforte23, G. Bellettini23, J. Bellinger34, D. Benjamin31, J. Benlloch15, J. Bensinger3, D. Benton21, A. Beretvas7, J. P. Berge7, S. Bertolucci8, A. Bhatti26, K. Biery11, M. Binkley7, F. Bird29, D. Bisello20, R. E. Blair1, C. Blocker3, A. Bodek25, W. Bokhari15, V. Bolognesi23, D. Bortoletto24, C. Boswell12, T. Boulos14, G. Brandenburg9, C. Bromberg17, E. Buckley-Geer7, H. S. Budd25, K. Burkett16, G. Busetto20, A. Byon-Wagner7, K. L. Byrum1, J. Cammerata12, C. Campagnari7, M. Campbell16, A. Caner7, W. Carithers14, D. Carlsmith34, A. Castro20, Y. Cen21, F. Cervelli23, H. Y. Chao28, J. Chapman16, M.-T. Cheng28, G. Chiarelli8, T. Chikamatsu32, C. N. Chiou28, S. Cihangir7, A. G. Clark23, M. Cobal23, M. Contreras5, J. Conway27, J. Cooper7, M. Cordelli8, C. Couyoumtzelis23, D. Crane1, J. D. Cunningham3, T. Daniels15, F. DeJongh7, S. Delchamps7, S. Dell'Agnello23, M. Dell'Orso23, L. Demortier26, B. Denby23, M. Deninno2, P. F. Derwent16, T. Devlin27, M. Dickson25, J. R. Dittmann6, S. Donati23, R. B. Drucker14, A. Dunn16, K. Einsweiler14, J. E. Elias7, R. Ely14, E. Engels, Jr.22, S. Eno5, D. Errede10, S. Errede10, Q. Fan25, B. Farhat15, I. Fiori2, B. Flaugher7, G. W. Foster7, M. Franklin9, M. Frautschi18, J. Freeman7, J. Friedman15, A. Fry29, T. A. Fuess1, Y. Fukui13, S. Funaki32, G. Gagliardi23, S. Galeotti23, M. Gallinaro20, A. F. Garfinkel24, S. Geer7, D. W. Gerdes16, P. Giannetti23, N. Giokaris26, P. Giromini8, L. Gladney21, D. Glenzinski12, M. Gold18, J. Gonzalez21, A. Gordon9, A. T. Goshaw6, K. Goulianos26, H. Grassmann6, A. Grewal21, G. Grieco23, L. Groer27, C. Grosso-Pilcher5, C. Haber14, S. R. Hahn7, R. Hamilton9, R. Handler34, R. M. Hans35, K. Hara32, B. Harral21, R. M. Harris7, S. A. Hauger6, J. Hauser4, C. Hawk27, J. Heinrich21, D. Cronin-Hennessy6, R. Hollebeek21, L. Holloway10, A. Hölscher11, S. Hong16, G. Houk21, P. Hu22, B. T. Huffman22, R. Hughes25, P. Hurst9, J. Huston17, J. Huth9, J. Hylen7, M. Incagli23, J. Incandela7, H. Iso32, H. Jensen7, C. P. Jessop9, U. Joshi7, R. W. Kadel14, E. Kajfasz7, T. Kamon30, T. Kaneko32, D. A. Kardelis10, H. Kasha35, Y. Kato19, L. Keeble8, R. D. Kennedy27, R. Kephart7, P. Kesten14, D. Kestenbaum9, R. M. Keup10, H. Keutelian7, F. Keyvan4, D. H. Kim7, H. S. Kim11, S. B. Kim16, S. H. Kim32, Y. K. Kim14, L. Kirsch3, P. Koehn25, K. Kondo32, J. Konigsberg9, S. Kopp5, K. Kordas11, W. Koska7, E. Kovacs7, W. Kowald6, M. Krasberg16, J. Kroll7, M. Kruse24, S. E. Kuhlmann1, E. Kuns27, A. T. Laasanen24, N. Labanca23, S. Lammel4, J. I. Lamoureux3, T. LeCompte10, S. Leone23, J. D. Lewis7, P. Limon7, M. Lindgren4, T. M. Liss10, N. Lockyer21, C. Loomis27, O. Long21, M. Loreti20, E. H. Low21, J. Lu30, D. Lucchesi23, C. B. Luchini10, P. Lukens7, P. Maas34, K. Maeshima7, A. Maghakian26, P. Maksimovic15, M. Mangano23, J. Mansour17, M. Mariotti23, J. P. Marriner7, A. Martin10, J. A. J. Matthews18, R. Mattingly15, P. McIntyre30, P. Melese26, A. Menzione23, E. Meschi23, G. Michail9, S. Mikamo13, M. Miller5, R. Miller17, T. Mimashi32, S. Miscetti8, M. Mishina13, H. Mitsushio32, S. Miyashita32, Y. Morita13, S. Moulding26, J. Mueller27, A. Mukherjee7, T. Muller4, P. Musgrave11, L. F. Nakae29, I. Nakano32, C. Nelson7, D. Neuberger4, C. Newman-Holmes7, L. Nodulman1, S. Ogawa32, S. H. Oh6, K. E. Ohl35, R. Oishi32, T. Okusawa19, C. Pagliarone23, R. Paoletti23, V. Papadimitriou31, S. Park7, J. Patrick7, G. Pauletta23, M. Paulini14, L. Pescara20, M. D. Peters14, T. J. Phillips6, G. Piacentino2, M. Pillai25, R. Plunkett7, L. Pondrom34, N. Produit14, J. Proudfoot1, F. Ptohos9, G. Punzi23, K. Ragan11, F. Rimondi2, L. Ristori23, M. Roach-Bellino33, W. J. Robertson6, T. Rodrigo7, J. Romano5, L. Rosenson15, W. K. Sakumoto25, D. Saltzberg5, A. Sansoni8, V. Scarpine30, A. Schindler14, P. Schlabach9, E. E. Schmidt7, M. P. Schmidt35, O. Schneider14, G. F. Sciacca23, A. Scribano23, S. Segler7, S. Seidel18, Y. Seiya32, G. Sganos11, A. Sgolacchia2, M. Shapiro14, N. M. Shaw24, Q. Shen24, P. F. Shepard22, M. Shimojima32, M. Shochet5, J. Siegrist29, A. Sill31, P. Sinervo11, P. Singh22, J. Skarha12, K. Sliwa33, D. A. Smith23, F. D. Snider12, L. Song7, T. Song16, J. Spalding7, L. Spiegel7, P. Sphicas15, A. Spies12, L. Stanco20, J. Steele34, A. Stefanini23, K. Strahl11, J. Strait7, D. Stuart7, G. Sullivan5, K. Sumorok15, R. L. Swartz, Jr.10, T. Takahashi19, K. Takikawa32, F. Tartarelli23, W. Taylor11, P. K. Teng28, Y. Teramoto19, S. Tether15, D. Theriot7, J. Thomas29, T. L. Thomas18, R. Thun16, M. Timko33, P. Tipton25, A. Titov26, S. Tkaczyk7, K. Tollefson25, A. Tollestrup7, J. Tonnison24, J. F. de Troconiz9, J. Tseng12, M. Turcotte29, N. Turini2, N. Uemura32, F. Ukegawa21, G. Unal21, S. van den Brink22, S. Vejcik III16, R. Vidal7, M. Vondracek10, R. G. Wagner1, R. L. Wagner7, N. Wainer7, R. C. Walker25, C. H. Wang28, G. Wang23, J. Wang5, M. J. Wang28, Q. F. Wang26, A. Warburton11, G. Watts25, T. Watts27, R. Webb30, C. Wendt34, H. Wenzel14, W. C. Wester III14, T. Westhusing10, A. B. Wicklund1, E. Wicklund7, R. Wilkinson21, H. H. Williams21, P. Wilson5, B. L. Winer25, J. Wolinski30, D. Y. Wu16, X. Wu23, J. Wyss20, A. Yagil7, W. Yao14, K. Yasuoka32, Y. Ye11, G. P. Yeh7, P. Yeh28, M. Yin6, J. Yoh7, T. Yoshida19, D. Yovanovitch7, I. Yu35, J. C. Yun7, A. Zanetti23, F. Zetti23, L. Zhang34, S. Zhang16, W. Zhang21, and S. Zucchelli2 (CDF Collaboration)
1Argonne National Laboratory, Argonne, Illinois 60439
2Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40126 Bologna, Italy
3Brandeis University, Waltham, Massachusetts 02254
4University of California at Los Angeles, Los Angeles, California 90024
5University of Chicago, Chicago, Illinois 60637
6Duke University, Durham, North Carolina 27708
7Fermi National Accelerator Laboratory, Batavia, Illinois 60510
8Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
9Harvard University, Cambridge, Massachusetts 02138
10University of Illinois, Urbana, Illinois 61801
11Institute of Particle Physics, McGill University, Montreal, Canada H3A 2T8
and University of Toronto, Toronto, Canada M5S 1A7
12The Johns Hopkins University, Baltimore, Maryland 21218
13National Laboratory for High Energy Physics (KEK), Tsukuba, Ibaraki 305, Japan
14Lawrence Berkeley Laboratory, Berkeley, California 94720
15Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
16University of Michigan, Ann Arbor, Michigan 48109
17Michigan State University, East Lansing, Michigan 48824
18University of New Mexico, Albuquerque, New Mexico 87131
19Osaka City University, Osaka 588, Japan
20Università di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy
21University of Pennsylvania, Philadelphia, Pennsylvania 19104
22University of Pittsburgh, Pittsburgh, Pennsylvania 15260
23Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy
24Purdue University, West Lafayette, Indiana 47907
25University of Rochester, Rochester, New York 14627
26Rockefeller University, New York, New York 10021
27Rutgers University, Piscataway, New Jersey 08854
28Academia Sinica, Taiwan 11529, Republic of China
29Superconducting Super Collider Laboratory, Dallas, Texas 75237
30Texas A&M University, College Station, Texas 77843
31Texas Tech University, Lubbock, Texas 79409
32University of Tsukuba, Tsukuba, Ibaraki 305, Japan
33Tufts University, Medford, Massachusetts 02155
34University of Wisconsin, Madison, Wisconsin 53706
35Yale University, New Haven, Connecticut 06511
Received 22 December 1994; published in the issue dated 19 June 1995
The lifetime of the Bs meson is measured using the semileptonic decay Bs→Ds-ℓ+νX. The data sample consists of 19.3 pb-1 of pp̅ collisions at √s = 1.8 TeV collected by the Collider Detector at Fermilab during 1992–1993. There are 76±8 ℓ+Ds- signal events where the Ds is identified via the decay Ds-→φπ-, φ→K+K-. Using these events, the Bs meson lifetime is determined to be τs = 1.42-0.23+0.27(stat)±0.11(syst) ps. A measurement of the Bs lifetime in a low statistics sample of exclusive Bs→J/ψφ decays is also presented in this paper.
© 1995 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.4988
DOI:
10.1103/PhysRevLett.74.4988
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