Measurement of the flavour-specific CP-violating asymmetry assl in B0s decays

LHCb Collaboration; R. Aaij; B. Adeva; M. Adinolfi; C. Adrover; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; Jr A. Alves; S. Amato; S. Amerio; Y. Amhis; L. Anderlini; J. Anderson; R. Andreassen; J. E. Andrews; R. B. Appleby; O. Aquines Gutierrez; F. Archilli; A. Artamonov; M. Artuso; E. Aslanides; G. Auriemma; M. Baalouch; S. Bachmann; J. J. Back; C. Baesso; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; Th Bauer; A. Bay; S. Bifani; P. Griffith; P. Ilten; I. R. Kenyon; C. Lazzeroni; A. Mazurov; J. McCarthy; C. J. Parkinson; L. Pescatore; D. Popov; N. K. Watson

doi:10.1016/j.physletb.2013.12.030

Measurement of the flavour-specific CP-violating asymmetry a^s_sl in B⁰_s decays

LHCb Collaboration, R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, Jr A. Alves, S. Amato, S. Amerio, Y. Amhis, L. Anderlini, J. Anderson, R. AndreassenJ. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso^*, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, C. Baesso, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, Th Bauer, A. Bay, S. Bifani, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, C. J. Parkinson, L. Pescatore, D. Popov, N. K. Watson

^*Corresponding author for this work

Physics and Astronomy

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Abstract

The CP-violating asymmetry a^s_sl is studied using semileptonic decays of B⁰_s and B^-0_s mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0fb^-1. The reconstructed final states are D^±_sμ^∓, with the D^±_s particle decaying in the φπ^± mode. The D^±_sμ^∓ yields are summed over B̄^-0_s and B⁰_s initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain a^s_sl=(-0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic.

Original language	English
Pages (from-to)	607-615
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	728
Early online date	16 Dec 2013
DOIs	https://doi.org/10.1016/j.physletb.2013.12.030
Publication status	Published - 20 Jan 2014

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Cite this

LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Cartelle, P. A., Alves, J. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., ... Watson, N. K. (2014). Measurement of the flavour-specific CP-violating asymmetry a^s_sl in B⁰_s decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 728, 607-615. Advance online publication. https://doi.org/10.1016/j.physletb.2013.12.030

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title = "Measurement of the flavour-specific CP-violating asymmetry assl in B0s decays",

abstract = "The CP-violating asymmetry assl is studied using semileptonic decays of B0s and B-0s mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0fb-1. The reconstructed final states are D±sμ∓, with the D±s particle decaying in the φπ± mode. The D±sμ∓ yields are summed over {\=B}-0s and B0s initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain assl=(-0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic.",

author = "{LHCb Collaboration} and R. Aaij 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 Cartelle, {P. Alvarez} and Alves, {Jr A.} and S. Amato and S. Amerio and Y. Amhis and L. Anderlini and J. Anderson and R. Andreassen and Andrews, {J. E.} and Appleby, {R. B.} and Gutierrez, {O. Aquines} 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 C. Baesso and V. Balagura and W. Baldini and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and Th Bauer and A. Bay and S. Bifani 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.}",

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month = jan,

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doi = "10.1016/j.physletb.2013.12.030",

language = "English",

volume = "728",

pages = "607--615",

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

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LHCb Collaboration, Aaij, R, Adeva, B, Adinolfi, M, Adrover, C, Affolder, A, Ajaltouni, Z, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Cartelle, PA, Alves, JA, Amato, S, Amerio, S, Amhis, Y, Anderlini, L, Anderson, J, Andreassen, R, Andrews, JE, Appleby, RB, Gutierrez, OA, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Baesso, C, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, Bauer, T, Bay, A, Bifani, S, Griffith, P, Ilten, P, Kenyon, IR, Lazzeroni, C, Mazurov, A, McCarthy, J, Parkinson, CJ, Pescatore, L, Popov, D & Watson, NK 2014, 'Measurement of the flavour-specific CP-violating asymmetry a^s_sl in B⁰_s decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 728, pp. 607-615. https://doi.org/10.1016/j.physletb.2013.12.030

TY - JOUR

T1 - Measurement of the flavour-specific CP-violating asymmetry assl in B0s decays

AU - LHCb Collaboration

AU - Aaij, R.

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 - Cartelle, P. Alvarez

AU - Alves, Jr A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - Anderlini, L.

AU - Anderson, J.

AU - Andreassen, R.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Gutierrez, O. Aquines

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 - Baesso, C.

AU - Balagura, V.

AU - Baldini, W.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Bauer, Th

AU - Bay, A.

AU - Bifani, S.

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 - 2014/1/20

Y1 - 2014/1/20

N2 - The CP-violating asymmetry assl is studied using semileptonic decays of B0s and B-0s mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0fb-1. The reconstructed final states are D±sμ∓, with the D±s particle decaying in the φπ± mode. The D±sμ∓ yields are summed over B̄-0s and B0s initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain assl=(-0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic.

AB - The CP-violating asymmetry assl is studied using semileptonic decays of B0s and B-0s mesons produced in pp collisions at a centre-of-mass energy of 7 TeV at the LHC, exploiting a data sample corresponding to an integrated luminosity of 1.0fb-1. The reconstructed final states are D±sμ∓, with the D±s particle decaying in the φπ± mode. The D±sμ∓ yields are summed over B̄-0s and B0s initial states, and integrated with respect to decay time. Data-driven methods are used to measure efficiency ratios. We obtain assl=(-0.06±0.50±0.36)%, where the first uncertainty is statistical and the second systematic.

UR - http://www.scopus.com/inward/record.url?scp=84896910151&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2013.12.030

DO - 10.1016/j.physletb.2013.12.030

M3 - Article

AN - SCOPUS:84896910151

SN - 0370-2693

VL - 728

SP - 607

EP - 615

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 -