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Search for $C P$ violation in $B_{s}^{0} \to μ^{+} D_{s}^{-} X$ decays in $p \bar{p}$ collisions at $\sqrt{s} = 1.96 TeV$

V. M. Abazov³⁷, B. Abbott⁷⁵, M. Abolins⁶⁵, B. S. Acharya³⁰, M. Adams⁵¹, T. Adams⁴⁹, E. Aguilo⁶, M. Ahsan⁵⁹, G. D. Alexeev³⁷ et al. (D0 Collaboration)

G. D. Alexeev³⁷, G. Alkhazov⁴¹, A. Alton^64,*, G. Alverson⁶³, G. A. Alves², L. S. Ancu³⁶, T. Andeen⁵³, M. S. Anzelc⁵³, M. Aoki⁵⁰, Y. Arnoud¹⁴, M. Arov⁶⁰, M. Arthaud¹⁸, A. Askew^49,†, B. Åsman⁴², O. Atramentov^49,†, C. Avila⁸, J. BackusMayes⁸², F. Badaud¹³, L. Bagby⁵⁰, B. Baldin⁵⁰, D. V. Bandurin⁵⁹, S. Banerjee³⁰, E. Barberis⁶³, A.-F. Barfuss¹⁵, P. Bargassa⁸⁰, P. Baringer⁵⁸, J. Barreto², J. F. Bartlett⁵⁰, U. Bassler¹⁸, D. Bauer⁴⁴, S. Beale⁶, A. Bean⁵⁸, M. Begalli³, M. Begel⁷³, C. Belanger-Champagne⁴², L. Bellantoni⁵⁰, A. Bellavance⁵⁰, J. A. Benitez⁶⁵, S. B. Beri²⁸, G. Bernardi¹⁷, R. Bernhard²³, I. Bertram⁴³, M. Besançon¹⁸, R. Beuselinck⁴⁴, V. A. Bezzubov⁴⁰, P. C. Bhat⁵⁰, V. Bhatnagar²⁸, G. Blazey⁵², S. Blessing⁴⁹, K. Bloom⁶⁷, A. Boehnlein⁵⁰, D. Boline⁶², T. A. Bolton⁵⁹, E. E. Boos³⁹, G. Borissov⁴³, T. Bose⁶², A. Brandt⁷⁸, R. Brock⁶⁵, G. Brooijmans⁷⁰, A. Bross⁵⁰, D. Brown¹⁹, X. B. Bu⁷, D. Buchholz⁵³, M. Buehler⁸¹, V. Buescher²², V. Bunichev³⁹, S. Burdin^43,‡, T. H. Burnett⁸², C. P. Buszello⁴⁴, P. Calfayan²⁶, B. Calpas¹⁵, S. Calvet¹⁶, J. Cammin⁷¹, M. A. Carrasco-Lizarraga³⁴, E. Carrera⁴⁹, W. Carvalho³, B. C. K. Casey⁵⁰, H. Castilla-Valdez³⁴, S. Chakrabarti⁷², D. Chakraborty⁵², K. M. Chan⁵⁵, A. Chandra⁴⁸, E. Cheu⁴⁶, D. K. Cho⁶², S. Choi³³, B. Choudhary²⁹, T. Christoudias⁴⁴, S. Cihangir⁵⁰, D. Claes⁶⁷, J. Clutter⁵⁸, M. Cooke⁵⁰, W. E. Cooper⁵⁰, M. Corcoran⁸⁰, F. Couderc¹⁸, M.-C. Cousinou¹⁵, S. Crépé-Renaudin¹⁴, V. Cuplov⁵⁹, D. Cutts⁷⁷, M. Ćwiok³¹, A. Das⁴⁶, G. Davies⁴⁴, K. De⁷⁸, S. J. de Jong³⁶, E. De La Cruz-Burelo³⁴, K. DeVaughan⁶⁷, F. Déliot¹⁸, M. Demarteau⁵⁰, R. Demina⁷¹, D. Denisov⁵⁰, S. P. Denisov⁴⁰, S. Desai⁵⁰, H. T. Diehl⁵⁰, M. Diesburg⁵⁰, A. Dominguez⁶⁷, T. Dorland⁸², A. Dubey²⁹, L. V. Dudko³⁹, L. Duflot¹⁶, D. Duggan⁴⁹, A. Duperrin¹⁵, S. Dutt²⁸, A. Dyshkant⁵², M. Eads⁶⁷, D. Edmunds⁶⁵, J. Ellison⁴⁸, V. D. Elvira⁵⁰, Y. Enari⁷⁷, S. Eno⁶¹, P. Ermolov^39,‡‡, M. Escalier¹⁵, H. Evans⁵⁴, A. Evdokimov⁷³, V. N. Evdokimov⁴⁰, G. Facini⁶³, A. V. Ferapontov⁵⁹, T. Ferbel^61,71, F. Fiedler²⁵, F. Filthaut³⁶, W. Fisher⁵⁰, H. E. Fisk⁵⁰, M. Fortner⁵², H. Fox⁴³, S. Fu⁵⁰, S. Fuess⁵⁰, T. Gadfort⁷⁰, C. F. Galea³⁶, A. Garcia-Bellido⁷¹, V. Gavrilov³⁸, P. Gay¹³, W. Geist¹⁹, W. Geng^15,65, C. E. Gerber⁵¹, Y. Gershtein^49,†, D. Gillberg⁶, G. Ginther^50,71, B. Gómez⁸, A. Goussiou⁸², P. D. Grannis⁷², S. Greder¹⁹, H. Greenlee⁵⁰, Z. D. Greenwood⁶⁰, E. M. Gregores⁴, G. Grenier²⁰, Ph. Gris¹³, J.-F. Grivaz¹⁶, A. Grohsjean²⁶, S. Grünendahl⁵⁰, M. W. Grünewald³¹, F. Guo⁷², J. Guo⁷², G. Gutierrez⁵⁰, P. Gutierrez⁷⁵, A. Haas⁷⁰, N. J. Hadley⁶¹, P. Haefner²⁶, S. Hagopian⁴⁹, J. Haley⁶⁸, I. Hall⁶⁵, R. E. Hall⁴⁷, L. Han⁷, K. Harder⁴⁵, A. Harel⁷¹, J. M. Hauptman⁵⁷, J. Hays⁴⁴, T. Hebbeker²¹, D. Hedin⁵², J. G. Hegeman³⁵, A. P. Heinson⁴⁸, U. Heintz⁶², C. Hensel²⁴, I. Heredia-De La Cruz³⁴, K. Herner⁶⁴, G. Hesketh⁶³, M. D. Hildreth⁵⁵, R. Hirosky⁸¹, T. Hoang⁴⁹, J. D. Hobbs⁷², B. Hoeneisen¹², M. Hohlfeld²², S. Hossain⁷⁵, P. Houben³⁵, Y. Hu⁷², Z. Hubacek¹⁰, N. Huske¹⁷, V. Hynek¹⁰, I. Iashvili⁶⁹, R. Illingworth⁵⁰, A. S. Ito⁵⁰, S. Jabeen⁶², M. Jaffré¹⁶, S. Jain⁷⁵, K. Jakobs²³, D. Jamin¹⁵, C. Jarvis⁶¹, R. Jesik⁴⁴, K. Johns⁴⁶, C. Johnson⁷⁰, M. Johnson⁵⁰, D. Johnston⁶⁷, A. Jonckheere⁵⁰, P. Jonsson⁴⁴, A. Juste⁵⁰, E. Kajfasz¹⁵, D. Karmanov³⁹, P. A. Kasper⁵⁰, I. Katsanos⁶⁷, V. Kaushik⁷⁸, R. Kehoe⁷⁹, S. Kermiche¹⁵, N. Khalatyan⁵⁰, A. Khanov⁷⁶, A. Kharchilava⁶⁹, Y. N. Kharzheev³⁷, D. Khatidze⁷⁰, T. J. Kim³², M. H. Kirby⁵³, M. Kirsch²¹, B. Klima⁵⁰, J. M. Kohli²⁸, J.-P. Konrath²³, A. V. Kozelov⁴⁰, J. Kraus⁶⁵, T. Kuhl²⁵, A. Kumar⁶⁹, A. Kupco¹¹, T. Kurča²⁰, V. A. Kuzmin³⁹, J. Kvita⁹, F. Lacroix¹³, D. Lam⁵⁵, S. Lammers⁵⁴, G. Landsberg⁷⁷, P. Lebrun²⁰, W. M. Lee⁵⁰, A. Leflat³⁹, J. Lellouch¹⁷, J. Li^78,‡‡, L. Li⁴⁸, Q. Z. Li⁵⁰, S. M. Lietti⁵, J. K. Lim³², D. Lincoln⁵⁰, J. Linnemann⁶⁵, V. V. Lipaev⁴⁰, R. Lipton⁵⁰, Y. Liu⁷, Z. Liu⁶, A. Lobodenko⁴¹, M. Lokajicek¹¹, P. Love⁴³, H. J. Lubatti⁸², R. Luna-Garcia^34,§, A. L. Lyon⁵⁰, A. K. A. Maciel², D. Mackin⁸⁰, P. Mättig²⁷, A. Magerkurth⁶⁴, P. K. Mal⁸², H. B. Malbouisson³, S. Malik⁶⁷, V. L. Malyshev³⁷, Y. Maravin⁵⁹, B. Martin¹⁴, R. McCarthy⁷², C. L. McGivern⁵⁸, M. M. Meijer³⁶, A. Melnitchouk⁶⁶, L. Mendoza⁸, D. Menezes⁵², P. G. Mercadante⁵, M. Merkin³⁹, K. W. Merritt⁵⁰, A. Meyer²¹, J. Meyer²⁴, J. Mitrevski⁷⁰, R. K. Mommsen⁴⁵, N. K. Mondal³⁰, R. W. Moore⁶, T. Moulik⁵⁸, G. S. Muanza¹⁵, M. Mulhearn⁷⁰, O. Mundal²², L. Mundim³, E. Nagy¹⁵, M. Naimuddin⁵⁰, M. Narain⁷⁷, H. A. Neal⁶⁴, J. P. Negret⁸, P. Neustroev⁴¹, H. Nilsen²³, H. Nogima³, S. F. Novaes⁵, T. Nunnemann²⁶, G. Obrant⁴¹, C. Ochando¹⁶, D. Onoprienko⁵⁹, J. Orduna³⁴, N. Oshima⁵⁰, N. Osman⁴⁴, J. Osta⁵⁵, R. Otec¹⁰, G. J. Otero y Garzón¹, M. Owen⁴⁵, M. Padilla⁴⁸, P. Padley⁸⁰, M. Pangilinan⁷⁷, N. Parashar⁵⁶, S.-J. Park²⁴, S. K. Park³², J. Parsons⁷⁰, R. Partridge⁷⁷, N. Parua⁵⁴, A. Patwa⁷³, G. Pawloski⁸⁰, B. Penning²³, M. Perfilov³⁹, K. Peters⁴⁵, Y. Peters⁴⁵, P. Pétroff¹⁶, R. Piegaia¹, J. Piper⁶⁵, M.-A. Pleier²², P. L. M. Podesta-Lerma^34,∥, V. M. Podstavkov⁵⁰, Y. Pogorelov⁵⁵, M.-E. Pol², P. Polozov³⁸, A. V. Popov⁴⁰, C. Potter⁶, W. L. Prado da Silva³, S. Protopopescu⁷³, J. Qian⁶⁴, A. Quadt²⁴, B. Quinn⁶⁶, A. Rakitine⁴³, M. S. Rangel¹⁶, K. Ranjan²⁹, P. N. Ratoff⁴³, P. Renkel⁷⁹, P. Rich⁴⁵, M. Rijssenbeek⁷², I. Ripp-Baudot¹⁹, F. Rizatdinova⁷⁶, S. Robinson⁴⁴, R. F. Rodrigues³, M. Rominsky⁷⁵, C. Royon¹⁸, P. Rubinov⁵⁰, R. Ruchti⁵⁵, G. Safronov³⁸, G. Sajot¹⁴, A. Sánchez-Hernández³⁴, M. P. Sanders¹⁷, B. Sanghi⁵⁰, G. Savage⁵⁰, L. Sawyer⁶⁰, T. Scanlon⁴⁴, D. Schaile²⁶, R. D. Schamberger⁷², Y. Scheglov⁴¹, H. Schellman⁵³, T. Schliephake²⁷, S. Schlobohm⁸², C. Schwanenberger⁴⁵, R. Schwienhorst⁶⁵, J. Sekaric⁴⁹, H. Severini⁷⁵, E. Shabalina²⁴, M. Shamim⁵⁹, V. Shary¹⁸, A. A. Shchukin⁴⁰, R. K. Shivpuri²⁹, V. Siccardi¹⁹, V. Simak¹⁰, V. Sirotenko⁵⁰, P. Skubic⁷⁵, P. Slattery⁷¹, D. Smirnov⁵⁵, G. R. Snow⁶⁷, J. Snow⁷⁴, S. Snyder⁷³, S. Söldner-Rembold⁴⁵, L. Sonnenschein²¹, A. Sopczak⁴³, M. Sosebee⁷⁸, K. Soustruznik⁹, B. Spurlock⁷⁸, J. Stark¹⁴, V. Stolin³⁸, D. A. Stoyanova⁴⁰, J. Strandberg⁶⁴, S. Strandberg⁴², M. A. Strang⁶⁹, E. Strauss⁷², M. Strauss⁷⁵, R. Ströhmer²⁶, D. Strom⁵³, L. Stutte⁵⁰, S. Sumowidagdo⁴⁹, P. Svoisky³⁶, M. Takahashi⁴⁵, A. Tanasijczuk¹, W. Taylor⁶, B. Tiller²⁶, F. Tissandier¹³, M. Titov¹⁸, V. V. Tokmenin³⁷, I. Torchiani²³, D. Tsybychev⁷², B. Tuchming¹⁸, C. Tully⁶⁸, P. M. Tuts⁷⁰, R. Unalan⁶⁵, L. Uvarov⁴¹, S. Uvarov⁴¹, S. Uzunyan⁵², B. Vachon⁶, P. J. van den Berg³⁵, R. Van Kooten⁵⁴, W. M. van Leeuwen³⁵, N. Varelas⁵¹, E. W. Varnes⁴⁶, I. A. Vasilyev⁴⁰, P. Verdier²⁰, L. S. Vertogradov³⁷, M. Verzocchi⁵⁰, D. Vilanova¹⁸, P. Vint⁴⁴, P. Vokac¹⁰, M. Voutilainen^67,¶, R. Wagner⁶⁸, H. D. Wahl⁴⁹, M. H. L. S. Wang⁷¹, J. Warchol⁵⁵, G. Watts⁸², M. Wayne⁵⁵, G. Weber²⁵, M. Weber^50,**, L. Welty-Rieger⁵⁴, A. Wenger^23,††, M. Wetstein⁶¹, A. White⁷⁸, D. Wicke²⁵, M. R. J. Williams⁴³, G. W. Wilson⁵⁸, S. J. Wimpenny⁴⁸, M. Wobisch⁶⁰, D. R. Wood⁶³, T. R. Wyatt⁴⁵, Y. Xie⁷⁷, C. Xu⁶⁴, S. Yacoob⁵³, R. Yamada⁵⁰, W.-C. Yang⁴⁵, T. Yasuda⁵⁰, Y. A. Yatsunenko³⁷, Z. Ye⁵⁰, H. Yin⁷, K. Yip⁷³, H. D. Yoo⁷⁷, S. W. Youn⁵³, J. Yu⁷⁸, C. Zeitnitz²⁷, S. Zelitch⁸¹, T. Zhao⁸², B. Zhou⁶⁴, J. Zhu⁷², M. Zielinski⁷¹, D. Zieminska⁵⁴, L. Zivkovic⁷⁰, V. Zutshi⁵², and E. G. Zverev³⁹ (D0 Collaboration)

¹Universidad de Buenos Aires, Buenos Aires, Argentina
²LAFEX, Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
³Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
⁴Universidade Federal do ABC, Santo André, Brazil
⁵Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo, Brazil
⁶University of Alberta, Edmonton, Alberta, Canada; Simon Fraser University, Burnaby, British Columbia, Canada; York University, Toronto, Ontario, Canada and McGill University, Montreal, Quebec, Canada
⁷University of Science and Technology of China, Hefei, People’s Republic of China
⁸Universidad de los Andes, Bogotá, Colombia
⁹Center for Particle Physics, Charles University, Faculty of Mathematics and Physics, Prague, Czech Republic
¹⁰Czech Technical University in Prague, Prague, Czech Republic
¹¹Center for Particle Physics, Institute of Physics, Academy of Sciences of the Czech Republic, Prague, Czech Republic
¹²Universidad San Francisco de Quito, Quito, Ecuador
¹³LPC, Université Blaise Pascal, CNRS/IN2P3, Clermont, France
¹⁴LPSC Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut National Polytechnique de Grenoble, Grenoble, France
¹⁵CPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, France
¹⁶LAL, Université Paris-Sud, IN2P3/CNRS, Orsay, France
¹⁷LPNHE, IN2P3/CNRS, Universités Paris VI and VII, Paris, France
¹⁸CEA, Irfu, SPP, Saclay, France
¹⁹IPHC, Université de Strasbourg, CNRS/IN2P3, Strasbourg, France
²⁰IPNL, Université Lyon 1, CNRS/IN2P3, Villeurbanne, France and Université de Lyon, Lyon, France
²¹III. Physikalisches Institut A, RWTH Aachen University, Aachen, Germany
²²Physikalisches Institut, Universität Bonn, Bonn, Germany
²³Physikalisches Institut, Universität Freiburg, Freiburg, Germany
²⁴II. Physikalisches Institut, Georg-August-Universität G Göttingen, Germany
²⁵Institut für Physik, Universität Mainz, Mainz, Germany
²⁶Ludwig-Maximilians-Universität München, München, Germany
²⁷Fachbereich Physik, University of Wuppertal, Wuppertal, Germany
²⁸Panjab University, Chandigarh, India
²⁹Delhi University, Delhi, India
³⁰Tata Institute of Fundamental Research, Mumbai, India
³¹University College Dublin, Dublin, Ireland
³²Korea Detector Laboratory, Korea University, Seoul, Korea
³³SungKyunKwan University, Suwon, Korea
³⁴CINVESTAV, Mexico City, Mexico
³⁵FOM-Institute NIKHEF and University of Amsterdam/NIKHEF, Amsterdam, The Netherlands
³⁶Radboud University Nijmegen/NIKHEF, Nijmegen, The Netherlands
³⁷Joint Institute for Nuclear Research, Dubna, Russia
³⁸Institute for Theoretical and Experimental Physics, Moscow, Russia
³⁹Moscow State University, Moscow, Russia
⁴⁰Institute for High Energy Physics, Protvino, Russia
⁴¹Petersburg Nuclear Physics Institute, St. Petersburg, Russia
⁴²Stockholm University, Stockholm, Sweden, and Uppsala University, Uppsala, Sweden
⁴³Lancaster University, Lancaster, United Kingdom
⁴⁴Imperial College, London, United Kingdom
⁴⁵University of Manchester, Manchester, United Kingdom
⁴⁶University of Arizona, Tucson, Arizona 85721, USA
⁴⁷California State University, Fresno, California 93740, USA
⁴⁸University of California, Riverside, California 92521, USA
⁴⁹Florida State University, Tallahassee, Florida 32306, USA
⁵⁰Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
⁵¹University of Illinois at Chicago, Chicago, Illinois 60607, USA
⁵²Northern Illinois University, DeKalb, Illinois 60115, USA
⁵³Northwestern University, Evanston, Illinois 60208, USA
⁵⁴Indiana University, Bloomington, Indiana 47405, USA
⁵⁵University of Notre Dame, Notre Dame, Indiana 46556, USA
⁵⁶Purdue University Calumet, Hammond, Indiana 46323, USA
⁵⁷Iowa State University, Ames, Iowa 50011, USA
⁵⁸University of Kansas, Lawrence, Kansas 66045, USA
⁵⁹Kansas State University, Manhattan, Kansas 66506, USA
⁶⁰Louisiana Tech University, Ruston, Louisiana 71272, USA
⁶¹University of Maryland, College Park, Maryland 20742, USA
⁶²Boston University, Boston, Massachusetts 02215, USA
⁶³Northeastern University, Boston, Massachusetts 02115, USA
⁶⁴University of Michigan, Ann Arbor, Michigan 48109, USA
⁶⁵Michigan State University, East Lansing, Michigan 48824, USA
⁶⁶University of Mississippi, University, Mississippi 38677, USA
⁶⁷University of Nebraska, Lincoln, Nebraska 68588, USA
⁶⁸Princeton University, Princeton, New Jersey 08544, USA
⁶⁹State University of New York, Buffalo, New York 14260, USA
⁷⁰Columbia University, New York, New York 10027, USA
⁷¹University of Rochester, Rochester, New York 14627, USA
⁷²State University of New York, Stony Brook, New York 11794, USA
⁷³Brookhaven National Laboratory, Upton, New York 11973, USA
⁷⁴Langston University, Langston, Oklahoma 73050, USA
⁷⁵University of Oklahoma, Norman, Oklahoma 73019, USA
⁷⁶Oklahoma State University, Stillwater, Oklahoma 74078, USA
⁷⁷Brown University, Providence, Rhode Island 02912, USA
⁷⁸University of Texas, Arlington, Texas 76019, USA
⁷⁹Southern Methodist University, Dallas, Texas 75275, USA
⁸⁰Rice University, Houston, Texas 77005, USA
⁸¹University of Virginia, Charlottesville, Virginia 22901, USA
⁸²University of Washington, Seattle, Washington 98195, USA

^*Visitor from Augustana College, Sioux Falls, SD, USA.
^†Visitor from Rutgers University, Piscataway, NJ, USA.
^‡Visitor from The University of Liverpool, Liverpool, UK.
^§Visitor from Centro de Investigacion en Computacion–IPN, Mexico City, Mexico.
^∥Visitor from ECFM, Universidad Autonoma de Sinaloa, Culiacán, Mexico.
^¶Visitor from Helsinki Institute of Physics, Helsinki, Finland.
^**Visitor from Universität Bern, Bern, Switzerland.
^††Visitor from Universität Zürich, Zürich, Switzerland.
^‡‡Deceased.

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Phys. Rev. D 82, 012003 – Published 26 July, 2010Erratum Phys. Rev. D 83, 119901 (2011)

DOI: https://doi.org/10.1103/PhysRevD.82.012003

Abstract

We have performed a search for $C P$ violation in a sample of $B_{s}^{0} \to μ^{+} D_{s}^{-} X$ decays corresponding to $5 {fb}^{- 1}$ of proton-antiproton collisions collected by the D0 detector in Run II at the Fermilab Tevatron Collider. New physics in $B_{s}^{0}$ mixing could contribute a significant $C P$ violating weak phase, which would be observed as a difference in the decay-time distribution for $B_{s}^{0} \to {\bar{B}}_{s}^{0}$ oscillated states versus that for ${\bar{B}}_{s}^{0} \to B_{s}^{0}$ . A fit to the decay-time distributions of the $B_{s}^{0} / {\bar{B}}_{s}^{0}$ candidates yields the flavor-specific asymmetry $a_{fs}^{s} = [- 1.7 \pm 9.1 (stat)_{- 1.5}^{+ 1.4} (syst)] \times 10^{- 3}$ , which excludes $C P$ violation due to new physics within the experimental sensitivity.