Measurement of CP violation and constraints on the CKM angle γ in B±→DK± with D→K0Sπ+π- decays

LHCb Collaboration; R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; 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; V. Balagura; W. Baldini; R. J. Barlow; C. Barschel; S. Barsuk; W. Barter; 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:10.1016/j.nuclphysb.2014.09.015

Measurement of CP violation and constraints on the CKM angle γ in B^±→DK^± with D→K⁰_Sπ⁺π^- decays

LHCb Collaboration, R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, 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. AndreassenM. 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, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, 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

A model-dependent amplitude analysis of B^±→DK^± with D→K⁰_Sπ⁺π^- decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1fb^-1, recorded by LHCb at a centre-of-mass energy of 7 TeV in 2011. Values of the CP violation observables x_± and y_±, which are sensitive to the CKM angle γ, are measured to be

x_-=+0.027±0.044^+0.010_-0.008±0.001,

y_-=+0.013±0.048^+0.009_-0.007±0.003,

x₊=-0.084±0.045±0.009±0.005,

y₊=-0.032±0.048^+0.010_-0.009±0.008,

where the first uncertainty is statistical, the second systematic and the third arises from the uncertainty of the D→K⁰_Sπ⁺π^- amplitude model. The value of γ is determined to be (84⁺⁴⁹_-42)°, including all sources of uncertainty. Neutral D meson mixing is found to have negligible effect.

Original language	English
Pages (from-to)	169-193
Number of pages	25
Journal	Nuclear Physics B
Volume	888
Early online date	28 Sept 2014
DOIs	https://doi.org/10.1016/j.nuclphysb.2014.09.015
Publication status	Published - Nov 2014

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., 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., Anderson, J., ... Watson, N. K. (2014). Measurement of CP violation and constraints on the CKM angle γ in B^±→DK^± with D→K⁰_Sπ⁺π^- decays. Nuclear Physics B, 888, 169-193. Advance online publication. https://doi.org/10.1016/j.nuclphysb.2014.09.015

@article{d528079a29a94cefa8fe50d3c729ae5b,

title = "Measurement of CP violation and constraints on the CKM angle γ in B±→DK± with D→K0Sπ+π- decays",

abstract = "A model-dependent amplitude analysis of B±→DK± with D→K0Sπ+π- decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1fb-1, recorded by LHCb at a centre-of-mass energy of 7 TeV in 2011. Values of the CP violation observables x± and y±, which are sensitive to the CKM angle γ, are measured to be x-=+0.027±0.044+0.010-0.008±0.001, y-=+0.013±0.048+0.009-0.007±0.003, x+=-0.084±0.045±0.009±0.005, y+=-0.032±0.048+0.010-0.009±0.008, where the first uncertainty is statistical, the second systematic and the third arises from the uncertainty of the D→K0Sπ+π- amplitude model. The value of γ is determined to be (84+49-42)°, including all sources of uncertainty. Neutral D meson mixing is found to have negligible effect.",

author = "{LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi 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 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 W. Barter 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,

doi = "10.1016/j.nuclphysb.2014.09.015",

language = "English",

volume = "888",

pages = "169--193",

journal = "Nuclear Physics B",

issn = "0550-3213",

publisher = "Elsevier",

}

LHCb Collaboration, Aaij, R, Adeva, B, Adinolfi, M, Affolder, A, Ajaltouni, Z, 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, Aquines Gutierrez, O, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Bachmann, S, Back, JJ, Badalov, A, Balagura, V, Baldini, W, Barlow, RJ, Barschel, C, Barsuk, S, Barter, W, 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 violation and constraints on the CKM angle γ in B^±→DK^± with D→K⁰_Sπ⁺π^- decays', Nuclear Physics B, vol. 888, pp. 169-193. https://doi.org/10.1016/j.nuclphysb.2014.09.015

TY - JOUR

T1 - Measurement of CP violation and constraints on the CKM angle γ in B±→DK± with D→K0Sπ+π- decays

AU - LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

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 - 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 - Barter, W.

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

Y1 - 2014/11

N2 - A model-dependent amplitude analysis of B±→DK± with D→K0Sπ+π- decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1fb-1, recorded by LHCb at a centre-of-mass energy of 7 TeV in 2011. Values of the CP violation observables x± and y±, which are sensitive to the CKM angle γ, are measured to be x-=+0.027±0.044+0.010-0.008±0.001, y-=+0.013±0.048+0.009-0.007±0.003, x+=-0.084±0.045±0.009±0.005, y+=-0.032±0.048+0.010-0.009±0.008, where the first uncertainty is statistical, the second systematic and the third arises from the uncertainty of the D→K0Sπ+π- amplitude model. The value of γ is determined to be (84+49-42)°, including all sources of uncertainty. Neutral D meson mixing is found to have negligible effect.

AB - A model-dependent amplitude analysis of B±→DK± with D→K0Sπ+π- decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 1fb-1, recorded by LHCb at a centre-of-mass energy of 7 TeV in 2011. Values of the CP violation observables x± and y±, which are sensitive to the CKM angle γ, are measured to be x-=+0.027±0.044+0.010-0.008±0.001, y-=+0.013±0.048+0.009-0.007±0.003, x+=-0.084±0.045±0.009±0.005, y+=-0.032±0.048+0.010-0.009±0.008, where the first uncertainty is statistical, the second systematic and the third arises from the uncertainty of the D→K0Sπ+π- amplitude model. The value of γ is determined to be (84+49-42)°, including all sources of uncertainty. Neutral D meson mixing is found to have negligible effect.

UR - http://www.scopus.com/inward/record.url?scp=84937644682&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysb.2014.09.015

DO - 10.1016/j.nuclphysb.2014.09.015

M3 - Article

AN - SCOPUS:84937644682

SN - 0550-3213

VL - 888

SP - 169

EP - 193

JO - Nuclear Physics B

JF - Nuclear Physics B

ER -