Measurement of the CP-violating phase Φs in B0                      s → J/ψπ+π- decays

LHCb Collaboration

doi:10.1016/j.physletb.2012.06.032

Measurement of the CP-violating phase Φ_s in B⁰ _s → J/ψπ⁺π^- decays

LHCb Collaboration

Centro Brasileiro de Pesquisas Fisicas
Science Park 105
University of Barcelona
Universitat Ramon LLull - CSIC
University Santiago de Compostela
University of Bristol
Aix Marseille Université
University of Liverpool
Clermont-Auvergne University
European Organization for Nuclear Research
University of Glasgow
Petersburg Nuclear Physics Institute (PNPI)
Sezione di Roma
Instituto de Biofisica da UFRJ
ENAC-IIC-GEL
University of Zurich
University of Manchester
Max-Planck-Institut für Kernphysik
LNF-INFN
Kurchatov Institute
Syracuse University
Università degli Studi della Basilicata
University of Heidelberg
University of Warwick
Institute for Theoretical and Experimental Physics
Sezione INFN di Ferrara
Laboratoire de l'Accélérateur Linéaire
University of Cambridge
Universités Paris VI and VII
University of Edinburgh
Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
University College Dublin
University of Modena and Reggio Emilia
Imperial College London
Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
Sezione INFN di Cagliari
University of Dortmund
Vrije Universiteit Amsterdam
Horia Hulubei National Institute of Physics and Nuclear Engineering
INFN Sezione di Milano-Bicocca
University of Milano-Bicocca
INFN Sezione di Bologna
University of Rome “Tor Vergata”
Sezione di Genova
University of Genoa
University of Oxford
Université Savoie Mont Blanc
Kharkov Institute of Physics and Technology
Institute for Nuclear Physics
CCLRC Rutherford Appleton Laboratory
University of Birmingham
University of Ferrara
Institute for Nuclear Research of the Russian Academy of Sciences
University of Florence
University of Bologna
Tsinghua University
Pontifícia Universidade Católica do Rio de Janeiro
Universität Rostock
Institute of Nuclear Research, National Academy of Sciences in Ukraine
Moscow State University
Universitá di Cagliari
INFN Sezione di Bari
Agh University of Science and Technology Faculty of Computer Science
Hanoi University of Science
Università degli studi di Bari Aldo Moro
University of Rome
Soltan Institute for Nuclear Studies
University of Urbino Carlo Bo
P.N. Lebedev Physical Institute of the Russian Academy of Sciences

Résultats de recherche: Contribution à un journal › Article › Revue par des pairs

Résumé

Measurement of the mixing-induced CP-violating phase Φ_s in B⁰ _s decays is of prime importance in probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ⁺π^- are selected in 1 fb^-1 of pp collision data collected at √ s = 7 TeV with the LHCb detector. A timedependent fit to the data yields a value of Φ_s = -0.019^+0.173+0.004 _-0.174-0.003 rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found.

langue originale	Anglais
Pages (de - à)	378-386
Nombre de pages	9
journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	713
Numéro de publication	4-5
Les DOIs	https://doi.org/10.1016/j.physletb.2012.06.032
état	Publié - 18 juil. 2012
Modification externe	Oui

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10.1016/j.physletb.2012.06.032

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@article{d9f1da0825a742ba8aff64173a3822b7,

title = "Measurement of the CP-violating phase Φs in B0 s → J/ψπ+π- decays",

abstract = "Measurement of the mixing-induced CP-violating phase Φs in B0 s decays is of prime importance in probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π- are selected in 1 fb-1 of pp collision data collected at √ s = 7 TeV with the LHCb detector. A timedependent fit to the data yields a value of Φs = -0.019+0.173+0.004 -0.174-0.003 rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found.",

author = "\{LHCb Collaboration\} and R. Aaij and \{Abellan Beteta\}, C. and B. Adeva and M. Adinolfi and C. Adrover and A. Affolder and Z. Ajaltouni and J. Albrecht and F. Alessio and M. Alexander and S. Ali and G. Alkhazov and \{Alvarez Cartelle\}, P. and Alves, \{A. A.\} and S. Amato and Y. Amhis and J. Anderson and Appleby, \{R. B.\} and \{Aquines Gutierrez\}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and S. Bachmann and Back, \{J. J.\} and V. Balagura and W. Baldini and Barlow, \{R. J.\} and C. Barschel and S. Barsuk and W. Barter and A. Bates and C. Bauer and Th Bauer and A. Bay and I. Bediaga and S. Belogurov and K. Belous and I. Belyaev and E. Ben-Haim and M. Benayoun and G. Bencivenni and S. Benson and J. Benton and R. Bernet and Bettler, \{M. O.\} and \{van Beuzekom\}, M. and A. Bien and E. Maurice",

note = "Publisher Copyright: {\textcopyright} 2012 Elsevier B.V.",

year = "2012",

month = jul,

day = "18",

doi = "10.1016/j.physletb.2012.06.032",

language = "English",

volume = "713",

pages = "378--386",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

number = "4-5",

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TY - JOUR

T1 - Measurement of the CP-violating phase Φs in B0 s → J/ψπ+π- decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Abellan Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Adrover, C.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - Anderson, J.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Bachmann, S.

AU - Back, J. J.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bates, A.

AU - Bauer, C.

AU - Bauer, Th

AU - Bay, A.

AU - Bediaga, I.

AU - Belogurov, S.

AU - Belous, K.

AU - Belyaev, I.

AU - Ben-Haim, E.

AU - Benayoun, M.

AU - Bencivenni, G.

AU - Benson, S.

AU - Benton, J.

AU - Bernet, R.

AU - Bettler, M. O.

AU - van Beuzekom, M.

AU - Bien, A.

AU - Maurice, E.

PY - 2012/7/18

Y1 - 2012/7/18

N2 - Measurement of the mixing-induced CP-violating phase Φs in B0 s decays is of prime importance in probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π- are selected in 1 fb-1 of pp collision data collected at √ s = 7 TeV with the LHCb detector. A timedependent fit to the data yields a value of Φs = -0.019+0.173+0.004 -0.174-0.003 rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found.

AB - Measurement of the mixing-induced CP-violating phase Φs in B0 s decays is of prime importance in probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π- are selected in 1 fb-1 of pp collision data collected at √ s = 7 TeV with the LHCb detector. A timedependent fit to the data yields a value of Φs = -0.019+0.173+0.004 -0.174-0.003 rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found.

UR - https://www.scopus.com/pages/publications/84937644633

U2 - 10.1016/j.physletb.2012.06.032

DO - 10.1016/j.physletb.2012.06.032

M3 - Article

AN - SCOPUS:84937644633

SN - 0370-2693

VL - 713

SP - 378

EP - 386

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 4-5

ER -

Measurement of the CP-violating phase Φs in B0 s → J/ψπ+π- decays

Résumé

Accès au document

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Contient cette citation

Measurement of the CP-violating phase Φ_s in B⁰ _s → J/ψπ⁺π^- decays