Measurements of CP violation in the three-body phase space of charmless B± 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, W. Barter, V. Batozskaya, V. Battista, A. Bay, S. Bifani, N. Farley, P. Griffith, I. R. Kenyon, C. Lazzeroni, J. McCarthy, C. J. Parkinson, L. Pescatore, N. K. Watson

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Abstract

The charmless three-body decay modes B±→K±π+π-, B±→K±K+K-, B±→π±K+K- and B±→π±π+π- are reconstructed using data, corresponding to an integrated luminosity of 3.0 fb-1, collected by the LHCb detector. The inclusive CP asymmetries of these modes are measured to be ACP(B±→K±π+π-)=+0.025±0.004±0.004±0.007, ACP(B±→K±K+K-)=-0.036±0.004±0.002±0.007, ACP(B±→π±π+π-)=+0.058±0.008±0.009±0.007, ACP(B±→π±K+K-)=-0.123±0.017±0.012±0.007, where the first uncertainty is statistical, the second systematic, and the third is due to the CP asymmetry of the B±→J/ψK± reference mode. The distributions of these asymmetries are also studied as functions of position in the Dalitz plot and suggest contributions from rescattering and resonance interference processes.

Original languageEnglish
Article number112004
Number of pages17
JournalPhysical Review D
Volume90
Issue number11
DOIs
Publication statusPublished - 11 Dec 2014

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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