Charming new physics in rare B decays and mixing?

Jäger, Sebastian, Leslie, Kirsten, Kirk, Matthew and Lenz, Alexander (2018) Charming new physics in rare B decays and mixing? Physical Review D, 97 (1). ISSN 2470-0010

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We conduct a systematic study of the impact of new physics in quark-level b→cc ̅s transitions on B physics, in particular rare B decays and B-meson lifetime observables. We find viable scenarios where a sizable effect in rare semileptonic B decays can be generated, compatible with experimental indications and with a possible dependence on the dilepton invariant mass, while being consistent with constraints from radiative B decay and the measured Bs width difference. We show how, if the effect is generated at the weak scale or beyond, strong renormalization-group effects can enhance the impact on semileptonic decays while leaving radiative B decay largely unaffected. A good complementarity of the different B-physics observables implies that precise measurements of lifetime observables at LHCb may be able to confirm, refine, or rule out this scenario.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Theoretical Particle Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Kirsten Leslie
Date Deposited: 14 Feb 2018 09:44
Last Modified: 14 Feb 2018 09:44

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