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Measurement of CP violation and constraints on the CKM angle gamma in B-+/- -> DK +/- with D -> K-s(0)pi(+)pi(-) decays

Research output: Contribution to journalArticle

  • 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
  • V. Batozskaya
  • A. Bay
  • L. Beaucourt
  • J. Beddow
  • Laurence Carson
  • P. E. L. Clarke
  • G. A. Cowan
  • S. Eisenhardt
  • Silvia Gambetta
  • F. Muheim
  • M. Needham
  • S. Playfer
  • LHCb Collaboration

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Original languageEnglish
Article numberAaij:2014iba
Pages (from-to)169-193
Number of pages25
JournalNuclear physics b
Volume888
DOIs
Publication statusPublished - Nov 2014

Abstract

A model-dependent amplitude analysis of B-+/- -> DK +/- with D -> K-s(0)pi(+)pi(-) decays is performed using proton proton collision data, corresponding to an integrated luminosity of 1 fb(-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 gamma, are measured to be

x- = +0.027 +/- 0.0441(-0.008)(+0.010) +/- 0.001,

y- = +0.013 +/- 0.0481(-0.007)(+0.009) +/- 0.003,

x+ = -0.084 +/- 0.045 +/- 0.009 +/- 0.005,

y+ = -0.032 +/- 0.048(-0.009)(+0.010) +/- 0.008,

where the first uncertainty is statistical, the second systematic and the third arises from the uncertainty of the D -> K-S(0)pi(+)pi(-) amplitude model. The value of gamma is determined to be (84(-42)(+49))degrees including all sources of uncertainty. Neutral D meson mixing is found to have negligible effect. (C) 2014 The Authors. Published by Elsevier B.V.

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  • MATRIX

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