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

Research output: Contribution to journal › Article › peer-review

Abstract

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.

Original language	English
Pages (from-to)	378-386
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	713
Issue number	4-5
DOIs	https://doi.org/10.1016/j.physletb.2012.06.032
Publication status	Published - 18 Jul 2012
Externally published	Yes

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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",

}

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 Φ_s in B⁰ _s → J/ψπ⁺π^- decays

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