Measurement of the CP-violating phase phi(s) in (B)over-bar(s)(0) -> J / psi pi(+)pi(-) decays

R. Aaij, J.F.J. van den Brand, L.C. Garcia, K. De Bruyn, C. Farinelli, V.A.M. Heijne, T.J. Ketel, R. Koopman, D.M. Lambert, R.W. Lambert, J. van Leerdam, Y.J. Li, M.H.M. Merk, S. Oggero, H.G. Raven, M. Schiller, V. Syropoulos, S. Tolk, M. Garcia, S. Wu

Research output: Contribution to JournalArticleAcademicpeer-review


The mixing-induced CP-violating phase <inf>φs</inf> 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 <inf>φs</inf> = 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements. © 2014 The Authors.
Original languageEnglish
Pages (from-to)186-195
JournalPhysics Letters B
Publication statusPublished - 2014

Bibliographical note

PT: J; NR: 37; TC: 6; J9: PHYS LETT B; PG: 10; GA: AO6UR; UT: WOS:000341487800025


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