Phys. Rev. Lett.
75,
3068–3072
(1995)
Measurement of the Polarization in the Decays Bd→J/ψ K*0 and Bs→J/ψ φ
F. Abe et al. (CDF Collaboration)
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F. Abe13, M. G. Albrow7, S. R. Amendolia22, D. Amidei16, J. Antos28, C. Anway-Wiese4, G. Apollinari26, H. Areti7, M. Atac7, P. Auchincloss25, F. Azfar21, P. Azzi20, N. Bacchetta20, W. Badgett16, M. W. Bailey18, J. Bao35, P. de Barbaro25, A. Barbaro-Galtieri14, V. E. Barnes24, B. A. Barnett12, P. Bartalini22, G. Bauer15, T. Baumann9, F. Bedeschi22, S. Behrends3, S. Belforte22, G. Bellettini22, J. Bellinger34, D. Benjamin31, J. Benlloch15, J. Bensinger3, D. Benton21, A. Beretvas7, J. P. Berge7, S. Bertolucci8, A. Bhatti26, K. Biery11,11b, M. Binkley7, F. Bird29, D. Bisello20, R. E. Blair1, C. Blocker3, A. Bodek25, W. Bokhari15, V. Bolognesi22, 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. Cervelli22, H. Y. Chao28, J. Chapman16, M.-T. Cheng28, G. Chiarelli22, T. Chikamatsu32, C. N. Chiou28, L. Christofek10, S. Cihangir7, A. G. Clark22, M. Cobal22, M. Contreras5, J. Conway27, J. Cooper7, M. Cordelli8, C. Couyoumtzelis22, D. Crane1, J. D. Cunningham3, T. Daniels15, F. DeJongh7, S. Delchamps7, S. Dell'Agnello22, M. Dell'Orso22, L. Demortier26, B. Denby22, M. Deninno2, P. F. Derwent16, T. Devlin27, M. Dickson25, J. R. Dittmann6, S. Donati22, R. B. Drucker14, A. Dunn16, K. Einsweiler14, J. E. Elias7, R. Ely14, E. Engels, Jr.23, 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. Gagliardi22, S. Galeotti22, M. Gallinaro20, A. F. Garfinkel24, S. Geer7, D. W. Gerdes16, P. Giannetti22, N. Giokaris26, P. Giromini8, L. Gladney21, D. Glenzinski12, M. Gold18, J. Gonzalez21, A. Gordon9, A. T. Goshaw6, K. Goulianos26, H. Grassmann6, A. Grewal21, 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. Hölscher11,11b, S. Hong16, G. Houk21, P. Hu23, B. T. Huffman23, R. Hughes25, P. Hurst9, J. Huston17, J. Huth9, J. Hylen7, M. Incagli22, 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. Kim11,11b, S. B. Kim16, S. H. Kim32, Y. K. Kim14, L. Kirsch3, P. Koehn25, K. Kondo32, J. Konigsberg9, S. Kopp5, K. Kordas11,11b, W. Koska7, E. Kovacs7, W. Kowald6, M. Krasberg16, J. Kroll7, M. Kruse24, S. E. Kuhlmann1, E. Kuns27, A. T. Laasanen24, N. Labanca22, S. Lammel4, J. I. Lamoureux3, T. LeCompte10, S. Leone22, J. D. Lewis7, P. Limon7, M. Lindgren4, T. M. Liss10, N. Lockyer21, C. Loomis27, O. Long21, M. Loreti20, E. H. Low21, J. Lu30, D. Lucchesi22, C. B. Luchini10, P. Lukens7, J. Lys14, P. Maas34, K. Maeshima7, A. Maghakian26, P. Maksimovic15, M. Mangano22, J. Mansour17, M. Mariotti20, J. P. Marriner7, A. Martin10, J. A. J. Matthews18, R. Mattingly15, P. McIntyre30, P. Melese26, A. Menzione22, E. Meschi22, G. Michail9, S. Mikamo13, M. Miller5, R. Miller17, T. Mimashi32, S. Miscetti8, M. Mishina13, H. Mitsushio32, S. Miyashita32, Y. Morita32, S. Moulding26, J. Mueller27, A. Mukherjee7, T. Muller4, P. Musgrave11,11b, 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. Pagliarone22, R. Paoletti22, V. Papadimitriou31, S. P. Pappas35, S. Park7, J. Patrick7, G. Pauletta22, 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. Punzi22, K. Ragan11,11b, F. Rimondi2, L. Ristori22, 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. Sciacca22, A. Scribano22, S. Segler7, S. Seidel18, Y. Seiya32, G. Sganos11,11b, A. Sgolacchia2, M. Shapiro14, N. M. Shaw24, Q. Shen24, P. F. Shepard23, M. Shimojima31, M. Shochet5, J. Siegrist29, A. Sill31, P. Sinervo11,11b, P. Singh23, J. Skarha12, K. Sliwa33, D. A. Smith22, F. D. Snider12, L. Song7, T. Song16, J. Spalding7, L. Spiegel7, P. Sphicas15, L. Stanco20, J. Steele34, A. Stefanini22, K. Strahl11,11b, J. Strait7, D. Stuart7, G. Sullivan5, K. Sumorok15, R. L. Swartz, Jr.10, T. Takahashi19, K. Takikawa32, F. Tartarelli22, W. Taylor11,11b, 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. Turini22, N. Uemura32, F. Ukegawa21, G. Unal21, S. C. van den Brink23, S. Vejcik III16, R. Vidal7, M. Vondracek10, D. Vucinic15, R. G. Wagner1, R. L. Wagner7, N. Wainer7, R. C. Walker25, C. Wang6, C. H. Wang28, G. Wang22, J. Wang5, M. J. Wang28, Q. F. Wang26, A. Warburton11,11b, G. Watts25, T. Watts27, R. Webb30, C. Wei6, C. Wendt34, H. Wenzel14, W. C. Wester III7, T. Westhusing10, A. B. Wicklund1, E. Wicklund7, R. Wilkinson21, H. H. Williams21, P. Wilson5, B. L. Winer25, J. Wolinski30, D. Y. Wu16, X. Wu22, J. Wyss20, A. Yagil7, W. Yao14, K. Yasuoka32, Y. Ye11,11b, G. P. Yeh7, P. Yeh28, M. Yin6, J. Yoh7, C. Yosef17, T. Yoshida19, D. Yovanovitch7, I. Yu35, J. C. Yun7, A. Zanetti22, F. Zetti22, 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 11band 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 22Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy 23University of Pittsburgh, Pittsburgh, Pennsylvania 15260 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 9 August 1995; published in the issue dated 23 October 1995
This Letter reports on measurements of the longitudinal polarization fractions in the decays Bd→J/ψK*0 and Bs→J/ψφ using data collected with the Collider Detector at Fermilab. Bd mesons are reconstructed through the decay chain Bd→J/ψK*0, J/ψ→μ+μ-, K*0→K+π-. A sample of 65±10Bd events is used to obtain a longitudinal polarization fraction of γL/γ = 0.65±0.10(stat)±0.04(syst). Bs mesons are reconstructed through the decay chain Bs→J/ψφ, J/ψ→μ+μ-, φ→K+K-. A sample of 19±5Bs events is used to obtain the result γL/γ = 0.56±0.21(stat)-0.04+0.02(syst).
© 1995 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.75.3068
DOI:
10.1103/PhysRevLett.75.3068
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