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Future sensitivity to new physics in Bd, Bs, and K mixings

Jérôme Charles1,2,*, Sébastien Descotes-Genon3,*, Zoltan Ligeti4, Stéphane Monteil5,*, Michele Papucci6, and Karim Trabelsi7,*

  • 1Aix-Marseille Université, CNRS, CPT, UMR 7332, 13288 Marseille, France
  • 2Université de Toulon, CNRS, CPT, UMR 7332, 83957 La Garde, France
  • 3Laboratoire de Physique Théorique, CNRS/Univ. Paris-Sud 11 (UMR 8627) 91405 Orsay Cedex, France
  • 4Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, California 94720, USA
  • 5Laboratoire de Physique Corpusculaire de Clermont-Ferrand Université Blaise Pascal, 24 Avenue des Landais F-63177 Aubiere Cedex, France
  • 6Michigan Center for Theoretical Physics, University of Michigan, Ann Arbor, Michigan 48109, USA
  • 7High Energy Accelerator Research Organization, KEK 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan

  • *For the CKMfitter group.
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Phys. Rev. D 89, 033016 – Published 27 February, 2014

DOI: https://doi.org/10.1103/PhysRevD.89.033016

Abstract

We estimate, in a large class of scenarios, the sensitivity to new physics in Bd and Bs mixings achievable with 50  ab−1 of Belle II and 50  fb−1 of LHCb data. We find that current limits on new physics contributions in both Bd,s systems can be improved by a factor of ∼5 for all values of the CP-violating phases, corresponding to over a factor of 2 increase in the scale of new physics probed. Assuming the same suppressions by Cabbibo-Kobayashi-Maskawa matrix elements as those of the standard model box diagrams, the scale probed will be about 20 TeV for tree-level new physics contributions, and about 2 TeV for new physics arising at one loop. We also explore the future sensitivity to new physics in K mixing. Implications for generic new physics and for various specific scenarios, such as minimal flavor violation, light third-generation dominated flavor violation, or U(2) flavor models are studied.

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Phys. Rev. D 89, 033016– Published 27 February, 2014
  • Received 3 October 2013

© 2014 American Physical Society

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