The charmless decays B-+/- -> K-+/-pi(+)pi(-) and B-+/- -> (KK+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-+/- -> (KK+K-)-K-+/-) =0.032 +/- 0.008(stat)+/- 0.004(syst)+/- 0.007(J/psi K-+/-), and A(CP)(B-+/- -> (KK+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-+/- -> (KK+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.

Measurement of CP Violation in the Phase Space of B-+/- -> K-+/-pi(+)pi(-) and B-+/- -> (KK+K-)-K-+/- Decays / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., S., A., S., A., Y., A., L., A., J., A., R., A., J. E., A., R. B., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 111:10(2013). [10.1103/physrevlett.111.101801]

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

SARTI, ALESSIO;SCIUBBA, Adalberto;
2013

Abstract

The charmless decays B-+/- -> K-+/-pi(+)pi(-) and B-+/- -> (KK+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-+/- -> (KK+K-)-K-+/-) =0.032 +/- 0.008(stat)+/- 0.004(syst)+/- 0.007(J/psi K-+/-), and A(CP)(B-+/- -> (KK+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-+/- -> (KK+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.
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of CP Violation in the Phase Space of B-+/- -> K-+/-pi(+)pi(-) and B-+/- -> (KK+K-)-K-+/- Decays / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., S., A., S., A., Y., A., L., A., J., A., R., A., J. E., A., R. B., A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 111:10(2013). [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/11573/560402
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