Measurement of polarization amplitudes and CP asymmetries in B 0 → Φk *(892)0

LHCb Collaboration, R. Aaij, A. Abba, 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. 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, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, S. Bifani, 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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Abstract

An angular analysis of the decay B 0 → ΦK *(892)0 is reported based on a pp collision data sample, corresponding to an integrated luminosity of 1.0 fb-1, collected at a centre-of-mass energy of √s = 7 TeV with the LHCb detector. The P-wave amplitudes and phases are measured with a greater precision than by previous experiments, and confirm about equal amounts of longitudinal and transverse polarization. The S-wave K + π - and K + K - contributions are taken into account and found to be significant. A comparison of the B 0 → ΦK *(892)0 and B-0 → ΦK-*(892)0 results shows no evidence for direct CP violation in the rate asymmetry, in the triple-product asymmetries or in the polarization amplitudes and phases. 

Original languageEnglish
Article number69
Number of pages24
JournalJournal of High Energy Physics
Volume2014
Issue number5
DOIs
Publication statusPublished - 16 May 2014

Keywords

  • B physics
  • CP violation
  • Flavour Changing Neutral Currents
  • Hadron-Hadron Scattering
  • Polarization

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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