The mixing-induced CP-violating phase φs in Bs0 and B-s0 decays is measured using the J/ψπ +π - final state in data, taken from 3 fb-1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phase φs = 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements. © 2014 The Authors.
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2014). Measurement of the CP-violating phase φs in Bs0-bar→J/ψ π+ π- decays. PHYSICS LETTERS. SECTION B, 736, 186-195 [10.1016/j.physletb.2014.06.079].
Measurement of the CP-violating phase φs in Bs0-bar→J/ψ π+ π- decays
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2014
Abstract
The mixing-induced CP-violating phase φs in Bs0 and B-s0 decays is measured using the J/ψπ +π - final state in data, taken from 3 fb-1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phase φs = 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements. © 2014 The Authors.
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