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B¯→Xsγ rate and CP asymmetry within the aligned two-Higgs-doublet model

Martin Jung, Antonio Pich, and Paula Tuzón

  • Departament de Física Teòrica, IFIC, Universitat de València–CSIC, Apartat Correus 22085, E-46071 València, Spain

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Phys. Rev. D 83, 074011 – Published 13 April, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.074011

Abstract

In the two-Higgs-doublet model the alignment of the Yukawa matrices in flavor space guarantees the absence of flavor-changing neutral currents at tree level, while introducing new sources for CP violation parametrized in a very economical way [Antonio Pich and Paula Tuzon, Phys. Rev. D 80, 091702 (2009)]. This implies a potentially large influence in a number of processes, b→sγ being a prominent example where rather high experimental and theoretical precision meet. We analyze the CP rate asymmetry in this inclusive decay and determine the resulting constraints on the model parameters. We demonstrate the compatibility with previously obtained limits [Martin Jung, Antonio Pich, and Paula Tuzon, J. High Energy Phys. 11 (2010) 003]. Moreover, we extend the phenomenological analysis of the branching ratio, and examine the influence of resulting correlations on the like-sign dimuon charge asymmetry in B decays.

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Phys. Rev. D 83, 074011– Published 13 April, 2011
  • Received 19 December 2010

© 2011 American Physical Society

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