TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Garcia Martin, L. M.
AU  - Henry, L.
AU  - Jashal, B. K.
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Remon Alepuz, C.
AU  - Ruiz Vidal, J.
AU  - Sanchez Mayordomo, C.
PY  - 2019
DA  - 2019//
TI  - Measurement of CP violation in the B-s(0)-> phi phi decay and search for the B-0 -> phi phi decay
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 155
EP  - 34pp
VL  - 12
IS  - 12
PB  - Springer
KW  - Hadron-Hadron scattering (experiments)
AB  - A measurement of the time-dependent CP-violating asymmetry in Bs0 ->phi phi = 7 TeV in 2011, 8 TeV in 2012 and 13 TeV in 2015 and 2016, a signal yield of around 9000 Bs0 ->phi phi decays is obtained. The CP-violating phase phi sss over bar is measured to be -0.073 +/- 0.115(stat) +/- 0.027(syst) rad, under the assumption it is independent of the helicity of the phi phi decay. In addition, the CP-violating phases of the transverse polarisations under the assumption of CP conservation of the longitudinal phase are measured. The helicity-independent direct CP-violation parameter is also measured, and is found to be |lambda| = 0.99 +/- 0.05(stat) +/- 0.01(syst). In addition, T-odd triple-product asymmetries are measured. The results obtained are consistent with the hypothesis of CP conservation in b over bar -> s over bar ss over bar transitions. Finally, a limit on the branching fraction of the B-0 -> phi phi decay is determined to be Bmml:mfenced close=")" open=(B0 ->phi phi 2.7x10(-8) at 90% confidence level.
SN  - 1029-8479
UR  - https://arxiv.org/abs/1907.10003
UR  - https://doi.org/10.1007/JHEP12(2019)155
DO  - 10.1007/JHEP12(2019)155
LA  - English
N1  - WOS:000504709300001
ID  - LHCbCollaborationAaij_etal2019
ER  -