TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Jaimes Elles, S. J.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Rebollo De Miguel, M.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanderswood, I.
AU  - Zhuo, J.
PY  - 2023
DA  - 2023//
TI  - Precision Measurement of CP Violation in the Penguin-Mediated Decay B0s → φφ
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 171802 - 12pp
VL  - 131
IS  - 17
PB  - Amer Physical Soc
AB  - A flavor-tagged time-dependent angular analysis of the decay B0s -> phi phi is performed using pp collision integrated luminosity of 6 fb-1. The CP-violating phase and direct CP-violation parameter are measured to s = -0.042 +/- 0.075 +/- 0.009 rad and l lambda l = 1.004 +/- 0.030 +/- 0.009, respectively, assuming the same values for all polarization states of the phi phi system. In these results, the first uncertainties are statistical and the second systematic. These parameters are also determined separately for each polarization state, showing no evidence for polarization dependence. The results are combined with previous LHCb measurements using pp collisions at center-of-mass energies of 7 and 8 TeV, yielding phi sss over bar s = -0.074 +/- 0.069 rad and l lambda l = 1.009 +/- 0.030. This is the most precise study of time-dependent CP violation in a penguindominated B meson decay. The results are consistent with CP symmetry and with the standard model predictions.
SN  - 0031-9007
UR  - https://arxiv.org/abs/2304.06198
UR  - https://doi.org/10.1103/PhysRevLett.131.171802
DO  - 10.1103/PhysRevLett.131.171802
LA  - English
N1  - WOS:001102957700001
ID  - LHCbCollaborationAaij_etal2023
ER  -