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Testing the Standard Model with CP asymmetries in flavor-specific nonleptonic decays
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Gershon, T. J., Lenz, Alexander, Rusov, Aleksey V. and Skidmore, Nicola (2022) Testing the Standard Model with CP asymmetries in flavor-specific nonleptonic decays. Physical Review D (Particles, Fields, Gravitation and Cosmology), 105 (11). 115023. doi:10.1103/physrevd.105.115023 ISSN 1550-7998.
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Official URL: https://doi.org/10.1103/physrevd.105.115023
Abstract
Motivated by recent indications that the rates of color-allowed nonleptonic channels are not in agreement
with their Standard Model expectations based on QCD factorization, we investigate the potential to study
CP asymmetries with these decays. In the Standard Model, these flavor-specific decays are sensitive to CP violation in B0 ðsÞ –B¯ 0 ðsÞ mixing, which is predicted with low uncertainties and can be measured precisely with semileptonic decays. Allowing beyond Standard Model (BSM) contributions to the nonleptonic decay amplitudes, we derive explicit expressions for the flavor-specific CP asymmetries in a model-independent way. We find that BSM contributions could lead to significant enhancements to the CP asymmetries. Therefore measurements of these quantities and subsequent comparison with the CP asymmetries measured with semileptonic decays have potential to identify BSM effects without relying on Standard Model predictions that might be affected by hadronic effects. In addition, we discuss the experimental prospects, and note the excellent potential for a precise determination of the CP asymmetry in B¯ s → Dþ s π− decays by the LHCb experiment.
| Item Type: | Journal Article | |||||||||
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| Subjects: | Q Science > QC Physics | |||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
| SWORD Depositor: | Library Publications Router | |||||||||
| Library of Congress Subject Headings (LCSH): | Leptons (Nuclear physics) -- Decay, Standard model (Nuclear physics), Photons | |||||||||
| Journal or Publication Title: | Physical Review D (Particles, Fields, Gravitation and Cosmology) | |||||||||
| Publisher: | American Physical Society | |||||||||
| ISSN: | 1550-7998 | |||||||||
| Official Date: | 16 June 2022 | |||||||||
| Dates: |
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| Volume: | 105 | |||||||||
| Number: | 11 | |||||||||
| Article Number: | 115023 | |||||||||
| DOI: | 10.1103/physrevd.105.115023 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | Published | |||||||||
| Access rights to Published version: | Open Access (Creative Commons) | |||||||||
| Date of first compliant deposit: | 8 September 2022 | |||||||||
| Date of first compliant Open Access: | 9 September 2022 | |||||||||
| RIOXX Funder/Project Grant: |
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