Using a data sample corresponding to an integrated luminosity of 0.35 fb(-1) collected by LHCb in 2011, we report the first evidence of CP violation in the decays of B-s(0) mesons to K-+/-pi(-/+)pairs, A(CP)(B-s(0) -> K pi) = 0.27 +/- 0.08(stat) +/- 0.02(syst), with a significance of 3.3 sigma. Furthermore, we report the most precise measurement of CP violation in the decays of B-0 mesons to K-+/-pi(-/+) pairs, A(CP)(B-0 -> K pi) = -0.088 +/- 0.011(stat) +/- 0.008(syst), with a significance exceeding 6 sigma

Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). First Evidence of Direct CP Violation in Charmless Two-Body Decays of B-s(0) Mesons. PHYSICAL REVIEW LETTERS, 108(20) [10.1103/PhysRevLett.108.201601].

First Evidence of Direct CP Violation in Charmless Two-Body Decays of B-s(0) Mesons

CALVI, MARTA;Martinelli, M;Pessina, G;
2012

Abstract

Using a data sample corresponding to an integrated luminosity of 0.35 fb(-1) collected by LHCb in 2011, we report the first evidence of CP violation in the decays of B-s(0) mesons to K-+/-pi(-/+)pairs, A(CP)(B-s(0) -> K pi) = 0.27 +/- 0.08(stat) +/- 0.02(syst), with a significance of 3.3 sigma. Furthermore, we report the most precise measurement of CP violation in the decays of B-0 mesons to K-+/-pi(-/+) pairs, A(CP)(B-0 -> K pi) = -0.088 +/- 0.011(stat) +/- 0.008(syst), with a significance exceeding 6 sigma
Articolo in rivista - Articolo scientifico
flavor physics ; B physics ; CP violation ; experimental results
English
2012
108
20
201601
none
Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). First Evidence of Direct CP Violation in Charmless Two-Body Decays of B-s(0) Mesons. PHYSICAL REVIEW LETTERS, 108(20) [10.1103/PhysRevLett.108.201601].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/38283
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