Charming new physics in rare B decays and mixing?

Jäger, Sebastian; Leslie, Kirsten; Kirk, Matthew; Lenz, Alexander

Abstract

We conduct a systematic study of the impact of new physics in quark-level b → ccs¯ 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.

Citation

Jäger, S., Leslie, K., Kirk, M., & Lenz, A. (2018). Charming new physics in rare B decays and mixing?. Physical Review D, 97(1), Article 015021. https://doi.org/10.1103/physrevd.97.015021

• Journal Article Type: Article
• Online Publication Date: Jan 31, 2018
• Publication Date: Jan 31, 2018
• Deposit Date: Feb 15, 2018
• Publicly Available Date: Feb 15, 2018
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 97
• Issue: 1
• Article Number: 015021
• DOI: https://doi.org/10.1103/physrevd.97.015021
• Public URL: https://durham-repository.worktribe.com/output/1334685