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Measurement of CP-violating and mixing-induced observables in B0sφγ decays

Research output: Contribution to journalArticle

Original languageEnglish
Article number081802
JournalPhysical Review Letters
Volume123
Issue number8
DOIs
Publication statusPublished - 23 Aug 2019

Abstract

A time-dependent analysis of the Bs0→ϕγ decay rate is performed to determine the CP -violating observables Sϕγ and Cϕγ and the mixing-induced observable AϕγΔ. The measurement is based on a sample of pp collision data recorded with the LHCb detector, corresponding to an integrated luminosity of 3  fb-1 at center-of-mass energies of 7 and 8 TeV. The measured values are Sϕγ=0.43±0.30±0.11, Cϕγ=0.11±0.29±0.11, and AϕγΔ=-0.67-0.41+0.37±0.17, where the first uncertainty is statistical and the second systematic. This is the first measurement of the observables S and C in radiative Bs0 decays. The results are consistent with the standard model predictions.

ID: 155213676