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. 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

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23 Citations (Scopus)
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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 





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.

Original languageEnglish
Pages (from-to)169-193
Number of pages25
JournalNuclear Physics B
Early online date28 Sept 2014
Publication statusPublished - Nov 2014

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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