Measurement of <i>CP</i>-Violating and Mixing-Induced Observables in <i>B<sub>s</sub></i><SUP>0</SUP> → φγ Decays

Aaij, R, Beteta, C Abellan, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F
et al (show 851 more authors) (2019) Measurement of <i>CP</i>-Violating and Mixing-Induced Observables in <i>B<sub>s</sub></i><SUP>0</SUP> → φγ Decays. PHYSICAL REVIEW LETTERS, 123 (8). 081802-.

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A time-dependent analysis of the B_{s}^{0}→ϕγ decay rate is performed to determine the CP -violating observables S_{ϕγ} and C_{ϕγ} and the mixing-induced observable A_{ϕγ}^{Δ}. 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 S_{ϕγ}=0.43±0.30±0.11, C_{ϕγ}=0.11±0.29±0.11, and A_{ϕγ}^{Δ}=-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 B_{s}^{0} decays. The results are consistent with the standard model predictions.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at
Uncontrolled Keywords: LHCb Collaboration
Depositing User: Symplectic Admin
Date Deposited: 05 Dec 2019 15:18
Last Modified: 17 Oct 2023 13:18
DOI: 10.1103/PhysRevLett.123.081802
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