An analysis of B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0 decays is performed with the LHCb experiment. The pp collision data used correspond to integrated luminosities of 1fb(-1) and 2fb(-1) collected at centre-of-mass energies of root s=7TeV and root s=8TeV, respectively. The ratio of branching fractions and the direct CP asymmetries are measured to be B(B+ -> (KSK+)-K-0)/B(B+ -> K-S(0)pi(+)) = 0.064+/-0.009(stat.) +/- 0.004(syst.), A(CP)(B+ -> K-S(0)pi(+)) = -0.022 +/- 0.025 (stat.) +/- 0.010(syst.) and A(CP)(B+ -> (KSK+)-K-0)=-0.21 +/- 0.14(stat.) +/- 0.01(syst.). The data sample taken at root s = 7 TeV is used to search for B+c?K0SK+ decays and results in the upper limit (f(c).B (B-c(+) -> (KSK+)-K-0))/(f(u).B(B+ -> K-S(0)pi(+))) < 5.8 x 10(-2) at 90% confidence level, where f(c) and f(u) denote the hadronisation fractions of a <(b)over bar> quark into a B-c(+) or a B+ meson, respectively. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.

Branching fraction and CP asymmetry of the decays B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0 / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., E., 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 726:4-5(2013), pp. 646-655. [10.1016/j.physletb.2013.09.046]

Branching fraction and CP asymmetry of the decays B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0

SARTI, ALESSIO;SCIUBBA, Adalberto;
2013

Abstract

An analysis of B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0 decays is performed with the LHCb experiment. The pp collision data used correspond to integrated luminosities of 1fb(-1) and 2fb(-1) collected at centre-of-mass energies of root s=7TeV and root s=8TeV, respectively. The ratio of branching fractions and the direct CP asymmetries are measured to be B(B+ -> (KSK+)-K-0)/B(B+ -> K-S(0)pi(+)) = 0.064+/-0.009(stat.) +/- 0.004(syst.), A(CP)(B+ -> K-S(0)pi(+)) = -0.022 +/- 0.025 (stat.) +/- 0.010(syst.) and A(CP)(B+ -> (KSK+)-K-0)=-0.21 +/- 0.14(stat.) +/- 0.01(syst.). The data sample taken at root s = 7 TeV is used to search for B+c?K0SK+ decays and results in the upper limit (f(c).B (B-c(+) -> (KSK+)-K-0))/(f(u).B(B+ -> K-S(0)pi(+))) < 5.8 x 10(-2) at 90% confidence level, where f(c) and f(u) denote the hadronisation fractions of a <(b)over bar> quark into a B-c(+) or a B+ meson, respectively. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
2013
01 Pubblicazione su rivista::01a Articolo in rivista
Branching fraction and CP asymmetry of the decays B+ -> K-S(0)pi(+) and B+ -> (KSK+)-K-0 / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., E., 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: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 726:4-5(2013), pp. 646-655. [10.1016/j.physletb.2013.09.046]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/560386
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