Targeting (pseudo)-scalar CP violation with <i>B</i><sub><i>s</i></sub><i>? µ</i><SUP>+</SUP><i>µ</i><SUP><i>-</i></SUP>

Robert Fleischer*, Eleftheria Malami, Anders Rehult, K. Keri Vos

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The leptonic decay B-s -> mu(+)mu(-) is both rare and theoretically clean, making it an excellent probe for New Physics searches. Due to its helicity suppression in the Standard Model, this decay is particularly sensitive to new (pseudo)-scalar contributions. We present a new strategy for detecting CP-violating New Physics contributions of this kind, exploiting two observables: A Delta Gamma s mu mu, which is accessible due to the sizeable decay width difference of the B-s system, and the mixing-induced CP asymmetry S mu mu. The strategy also uses information from B -> K-(*)mu(+)mu(-) and B-s -> phi mu(+)mu(-) decays. We find remarkably constrained regions in the A Delta Gamma s mu mu-S mu mu plane that serve as promising targets for future measurements.
Original languageEnglish
Article number183
Number of pages19
JournalJournal of High Energy Physics
Issue number9
DOIs
Publication statusPublished - 25 Sept 2024

Keywords

  • Bottom Quarks
  • CP Violation
  • Rare Decays

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