Measurement of the CP-violating phaseφsin B-s0→J/ψπ+π- decays

LHCb Collaboration

doi:10.1016/j.physletb.2014.06.079

Measurement of the CP-violating phase_φsin B-s0→J/ψπ+π- decays

LHCb Collaboration

Physics and Astronomy

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

50 Citations (Scopus)

129 Downloads (Pure)

Abstract

The mixing-induced CP-violating phase_φsin Bs0 and B-s0 decays is measured using the J/ψ^{π +π -}final state in data, taken from 3 fb^-1of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phase_φs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

Original language	English
Pages (from-to)	186-195
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	736
Early online date	3 Jul 2014
DOIs	https://doi.org/10.1016/j.physletb.2014.06.079
Publication status	Published - 7 Sept 2014

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Cite this

@article{13a724136a8a4e2eb8e70292cc0d2dd9,

title = "Measurement of the CP-violating phaseφsin B-s0→J/ψπ+π- decays",

abstract = "The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.",

author = "{LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and A. Affolder and Z. Ajaltouni and S. Akar 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 S. Amerio and Y. Amhis and L. An and L. Anderlini and J. Anderson and R. Andreassen and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and {Aquines Gutierrez}, O. and F. Archilli and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and S. Bachmann and Back, {J. J.} and A. Badalov and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and S. Bifani and N. Farley and P. Griffith and P. Ilten and Kenyon, {I. R.} and C. Lazzeroni and A. Mazurov and J. McCarthy and Parkinson, {C. J.} and L. Pescatore and D. Popov and Watson, {N. K.}",

year = "2014",

month = sep,

day = "7",

doi = "10.1016/j.physletb.2014.06.079",

language = "English",

volume = "736",

pages = "186--195",

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

issn = "0370-2693",

publisher = "Elsevier",

}

TY - JOUR

T1 - Measurement of the CP-violating phaseφsin B-s0→J/ψπ+π- decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Affolder, A.

AU - Ajaltouni, Z.

AU - Akar, S.

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 - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Aquines Gutierrez, O.

AU - Archilli, F.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Bifani, S.

AU - Farley, N.

AU - Griffith, P.

AU - Ilten, P.

AU - Kenyon, I. R.

AU - Lazzeroni, C.

AU - Mazurov, A.

AU - McCarthy, J.

AU - Parkinson, C. J.

AU - Pescatore, L.

AU - Popov, D.

AU - Watson, N. K.

PY - 2014/9/7

Y1 - 2014/9/7

N2 - The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

AB - The mixing-induced CP-violating phaseφsin Bs0 and B-s0 decays is measured using the J/ψπ +π -final state in data, taken from 3 fb-1of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phaseφs= 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

UR - http://www.scopus.com/inward/record.url?scp=84937644622&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2014.06.079

DO - 10.1016/j.physletb.2014.06.079

M3 - Article

AN - SCOPUS:84937644622

SN - 0370-2693

VL - 736

SP - 186

EP - 195

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

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

ER -