Measurement of CP asymmetry in B0s → D∓SK± decays

LHCb Collaboration; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; S. Akar; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alves; S. Amato; S. Amerio; Y. Amhis; L. An; L. Anderlini; J. Anderson; R. Andreassen; M. Andreotti; 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; A. Badalov; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; S. Bifani; N. Farley; P. Griffith; P. Ilten; I. R. Kenyon; C. Lazzeroni; A. Mazurov; J. McCarthy; C. J. Parkinson; L. Pescatore; D. Popov; N. K. Watson

doi:10.1007/JHEP11(2014)060

Measurement of CP asymmetry in B⁰_s→ D^∓_SK^±decays

LHCb Collaboration, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, S. Akar, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. An, L. Anderlini, J. AndersonR. Andreassen, M. Andreotti, 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, A. Badalov, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, S. Bifani, N. Farley, P. Griffith, P. Ilten, I. R. Kenyon, C. Lazzeroni, A. Mazurov, J. McCarthy, C. J. Parkinson, L. Pescatore, D. Popov, N. K. Watson

Physics and Astronomy

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Abstract

We report on measurements of the time-dependent CP violating observables in B⁰_s→ D^∓_SK^±decays using a dataset corresponding to 1.0 fb⁻¹of pp collisions recorded with the LHCb detector. We find the CP violating observables C_f= 0.53±0.25±0.04, A^ΔΓ_f= 0.37±0.42±0.20, A^ΔΓ-_f= 0.20±0.41±0.20, S_f = -1.09±0.33±0.08, S-_f = -0.36±0.34±0.08, where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the B⁰_smixing phase −2β_sleads to the first extraction of the CKM angle γ from B⁰_s→ D^∓_SK^±decays, finding γ = (115⁺²⁸_{− 43})° modulo 180° at 68% CL, where the error contains both statistical and systematic uncertainties.

Original language	English
Article number	60
Number of pages	30
Journal	Journal of High Energy Physics
Volume	2014
Issue number	11
DOIs	https://doi.org/10.1007/JHEP11(2014)060
Publication status	Published - 13 Nov 2014

Keywords

B physics
CKM angle gamma
CP violation
Flavor physics
Hadron-Hadron Scattering

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Cite this

LHCb Collaboration, Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., ... Watson, N. K. (2014). Measurement of CP asymmetry in B⁰_s→ D^∓_SK^±decays. Journal of High Energy Physics, 2014(11), Article 60. https://doi.org/10.1007/JHEP11(2014)060

@article{0338818ef49f4c2dbad06a0d616d8d32,

title = "Measurement of CP asymmetry in B0s → D∓SK± decays",

abstract = "We report on measurements of the time-dependent CP violating observables in B0s → D∓SK± decays using a dataset corresponding to 1.0 fb−1of pp collisions recorded with the LHCb detector. We find the CP violating observables Cf= 0.53±0.25±0.04, AΔΓf = 0.37±0.42±0.20, AΔΓ-f = 0.20±0.41±0.20, Sf = -1.09±0.33±0.08, S-f = -0.36±0.34±0.08, where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the B0s mixing phase −2βs leads to the first extraction of the CKM angle γ from B0s → D∓SK± decays, finding γ = (115+28− 43)° modulo 180° at 68% CL, where the error contains both statistical and systematic uncertainties.",

keywords = "B physics, CKM angle gamma, CP violation, Flavor physics, Hadron-Hadron Scattering",

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 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 A. Badalov 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 = nov,

day = "13",

doi = "10.1007/JHEP11(2014)060",

language = "English",

volume = "2014",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer",

number = "11",

}

LHCb Collaboration, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Anderson, J, Andreassen, R, Andreotti, M, Andrews, JE, Appleby, RB, Gutierrez, OA, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Bifani, S, Farley, N, Griffith, P, Ilten, P, Kenyon, IR, Lazzeroni, C, Mazurov, A, McCarthy, J, Parkinson, CJ, Pescatore, L, Popov, D & Watson, NK 2014, 'Measurement of CP asymmetry in B⁰_s→ D^∓_SK^±decays', Journal of High Energy Physics, vol. 2014, no. 11, 60. https://doi.org/10.1007/JHEP11(2014)060

TY - JOUR

T1 - Measurement of CP asymmetry in B0s → D∓SK± 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 - 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 - Badalov, A.

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 - 2014/11/13

Y1 - 2014/11/13

N2 - We report on measurements of the time-dependent CP violating observables in B0s → D∓SK± decays using a dataset corresponding to 1.0 fb−1of pp collisions recorded with the LHCb detector. We find the CP violating observables Cf= 0.53±0.25±0.04, AΔΓf = 0.37±0.42±0.20, AΔΓ-f = 0.20±0.41±0.20, Sf = -1.09±0.33±0.08, S-f = -0.36±0.34±0.08, where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the B0s mixing phase −2βs leads to the first extraction of the CKM angle γ from B0s → D∓SK± decays, finding γ = (115+28− 43)° modulo 180° at 68% CL, where the error contains both statistical and systematic uncertainties.

AB - We report on measurements of the time-dependent CP violating observables in B0s → D∓SK± decays using a dataset corresponding to 1.0 fb−1of pp collisions recorded with the LHCb detector. We find the CP violating observables Cf= 0.53±0.25±0.04, AΔΓf = 0.37±0.42±0.20, AΔΓ-f = 0.20±0.41±0.20, Sf = -1.09±0.33±0.08, S-f = -0.36±0.34±0.08, where the uncertainties are statistical and systematic, respectively. Using these observables together with a recent measurement of the B0s mixing phase −2βs leads to the first extraction of the CKM angle γ from B0s → D∓SK± decays, finding γ = (115+28− 43)° modulo 180° at 68% CL, where the error contains both statistical and systematic uncertainties.

KW - B physics

KW - CKM angle gamma

KW - CP violation

KW - Flavor physics

KW - Hadron-Hadron Scattering

UR - http://www.scopus.com/inward/record.url?scp=84959852029&partnerID=8YFLogxK

U2 - 10.1007/JHEP11(2014)060

DO - 10.1007/JHEP11(2014)060

M3 - Article

AN - SCOPUS:84959852029

SN - 1126-6708

VL - 2014

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 11

M1 - 60

ER -

Measurement of CP asymmetry in B0s → D∓SK± decays