Electroweak Beautygenesis: From bs CP Violation to the Cosmic Baryon Asymmetry

Tao Liu, Michael J. Ramsey-Musolf, and Jing Shu
Phys. Rev. Lett. 108, 221301 – Published 29 May 2012

Abstract

We address the possibility that CP violation in BsB¯s mixing may help explain the origin of the cosmic baryon asymmetry. We propose a new baryogenesis mechanism—“electroweak beautygenesis”—explicitly showing that these two CP-violating phenomena can be sourced by a common CP phase. As an illustration, we work in the two-Higgs-doublet model. Because the relevant CP phase is flavor off diagonal, this mechanism is less severely constrained by null results of electric dipole moment searches than other scenarios. We show how measurements of flavor observables by the D0, CDF, and LHCb collaborations test this scenario.

  • Figure
  • Received 3 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.108.221301

© 2012 American Physical Society

Authors & Affiliations

Tao Liu1, Michael J. Ramsey-Musolf2, and Jing Shu3,4

  • 1Department of Physics, University of California, Santa Barbara, California 93106, USA
  • 2Department of Physics, University of Wisconsin, Madison, Wisconsin 53706, USA and Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125
  • 3Institute for the Physics and Mathematics of the Universe, University of Tokyo, Kashiwa, Chiba 277-8568, Japan
  • 4International School for Advanced Studies (SISSA), Via Bonomea 265, I-34136 Trieste, Italy

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Issue

Vol. 108, Iss. 22 — 1 June 2012

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