The charmless decays B-+/- -> K-+/-pi(+)pi(-) and B-+/- -> (K+K-)-K-+/- are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb(-1), collected by LHCb in 2011. The inclusive charge asymmetries of these modes are measured as A(CP)(B-+/- -> (K+K-)-K-+/-) =0.032 +/- 0.008(stat)+/- 0.004(syst)+/- 0.007(J/psi K-+/-), and A(CP)(B-+/- -> (K+K-)-K-+/-) = -0.043 +/- 0.009(stat)+/- 0.003 (syst) = 0.007(J/psi K-+/-), where the third uncertainty is due to the CP asymmetry of the B-+/- -> J/psi K-+/- reference mode. The significance of A(CP)(B-+/- -> (K+K-)-K-+/-) exceeds three standard deviations and is the first evidence of an inclusive CP asymmetry in charmless three- body B decays. In addition to the inclusive CP asymmetries, larger asymmetries are observed in localized regions of phase space.

Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2013). Measurement of CP Violation in the Phase Space of B+/- ->K+/-pi(+)pi(-) and B-+/- ->K+/-(K+K-) Decays. PHYSICAL REVIEW LETTERS, 111(10) [10.1103/PhysRevLett.111.101801].

Measurement of CP Violation in the Phase Space of B+/- ->K+/-pi(+)pi(-) and B-+/- ->K+/-(K+K-) Decays

CALVI, MARTA;KHANJI, BASEM;KUCHARCZYK, MARCIN;Martinelli, M;PESSINA, GIANLUIGI EZIO;
2013

Abstract

The charmless decays B-+/- -> K-+/-pi(+)pi(-) and B-+/- -> (K+K-)-K-+/- are reconstructed using data, corresponding to an integrated luminosity of 1.0 fb(-1), collected by LHCb in 2011. The inclusive charge asymmetries of these modes are measured as A(CP)(B-+/- -> (K+K-)-K-+/-) =0.032 +/- 0.008(stat)+/- 0.004(syst)+/- 0.007(J/psi K-+/-), and A(CP)(B-+/- -> (K+K-)-K-+/-) = -0.043 +/- 0.009(stat)+/- 0.003 (syst) = 0.007(J/psi K-+/-), where the third uncertainty is due to the CP asymmetry of the B-+/- -> J/psi K-+/- reference mode. The significance of A(CP)(B-+/- -> (K+K-)-K-+/-) exceeds three standard deviations and is the first evidence of an inclusive CP asymmetry in charmless three- body B decays. In addition to the inclusive CP asymmetries, larger asymmetries are observed in localized regions of phase space.
Articolo in rivista - Articolo scientifico
Heavy Flavour Physics, LHC Collider
English
2013
111
10
101801
none
Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., et al. (2013). Measurement of CP Violation in the Phase Space of B+/- ->K+/-pi(+)pi(-) and B-+/- ->K+/-(K+K-) Decays. PHYSICAL REVIEW LETTERS, 111(10) [10.1103/PhysRevLett.111.101801].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/65431
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