Measurement of the CKM angle γ using B <sup>0</sup> → DK <sup>*0</sup> with D → K <inf>S</inf><sup>0</sup> π <sup>+</sup> π <sup>−</sup> decays

The LHCb collaboration, R. Aaij, C. Abellán Beteta, B. Adeva, M. Adinolfi, 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, G. AndreassiM. Andreotti, J. E. Andrews, R. B. Appleby, O. Aquines Gutierrez, F. Archilli, P. d’Argent, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, A. Badalov, C. Baesso, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, V. Batozskaya, V. Battista, A. Bay, L. Beaucourt, J. Beddow, F. Bedeschi, I. Bediaga, L. J. Bel, V. Bellee, N. Belloli, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, A. Bertolin, M. O. Bettler, M. van Beuzekom, S. Bifani, P. Billoir, T. Bird, A. Birnkraut, A. Bitadze, A. Bizzeti, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, M. Borsato, M. Boubdir, T. J.V. Bowcock, E. Bowen, C. Bozzi, S. Braun, M. Britsch, T. Britton, J. Brodzicka, E. Buchanan, C. Burr, A. Bursche, J. Buytaert, S. Cadeddu, R. Calabrese, M. Calvi, M. Calvo Gomez

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13 Citations (Scopus)


A model-dependent amplitude analysis of the decay B 0 → D(K S 0π +π )K ∗0 is performed using proton-proton collision data corresponding to an integrated luminosity of 3.0 fb −1, recorded at √s=7 and 8 TeV by the LHCb experiment. The CP violation observables x ± and y ±, sensitive to the CKM angle γ, are measured to bex−=−0.15±0.14±0.03±0.01,y−=0.25±0.15±0.06±0.01,x+=0.05±0.24±0.04±0.01,y+=−0.65 −0.23 +0.24±0.08±0.01, where the first uncertainties are statistical, the second systematic and the third arise from the uncertainty on the D → K S 0π +π amplitude model. These are the most precise measurements of these observables. They correspond to γ = (80 −22 +21)° and r B 0 =0.39±0.13, where r B 0 is the magnitude of the ratio of the suppressed and favoured B 0 → DK +π decay amplitudes, in a Kπ mass region of ±50 MeV around the K *(892) 0 mass and for an absolute value of the cosine of the K *0 decay angle larger than 0.4.[Figure not available: see fulltext.]

Original languageEnglish
Article number137
JournalJournal of High Energy Physics
Issue number8
Publication statusPublished - 1 Aug 2016
Externally publishedYes

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Publisher Copyright:
© 2016, The Author(s).

Copyright 2016 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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