Bs 0–B¯s 0 oscillations as a new tool to explore CP violation in Ds ± decays

Robert Fleischer*, K. Keri Vos

*Corresponding author for this work

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

CP violation in Bs 0–B¯s 0 oscillations is expected at the 10−5 level in the Standard Model but could be enhanced by New Physics. Using Bs 0→Ds +ν decays, LHCb has recently reported the new result (0.39±0.33)×10−2 of the corresponding observable asl s. We point out that other current B decay data imply asl s=(0.004±0.075)×10−2. In view of this strong constraint, we propose to use Bs 0→Ds +ν and similar flavor-specific decays as a new tool to determine both the production asymmetry between Bs 0 and B¯s 0 mesons, and the CP asymmetry in the subsequent Ds ± decays. The former serves as input for analyses of CP violation in Bs 0 channels, with significant room for improvement, while the latter offers an exciting laboratory for New Physics.

Original languageEnglish
Pages (from-to)319-324
Number of pages6
JournalPhysics Letters. Section B : Nuclear, Elementary Particle and High-Energy Physics
Volume770
DOIs
Publication statusPublished - 10 Jul 2017

Funding

We would like to thank Marcel Merk and Vincenzo Vagnoni for useful discussions. This work is supported by the Foundation for Fundamental Research on Matter (FOM) and by the Deutsche Forschungsgemeinschaft (DFG) within research unit FOR 1873 (QFET).

FundersFunder number
Deutsche Forschungsgemeinschaft
Stichting voor Fundamenteel Onderzoek der Materie

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