A study of B-+/- -> J/psi pi(+/-) and B-+/- -> psi(2S)pi(+/-) decays is performed with data corresponding to 0.37 fb(-1) of proton-proton collisions at root s = 7 TeV. Their branching fractions are found to be B(B-+/- -> J/psi pi(+/-)) = (3.88 +/- 0.11 +/- 0.15) x 10(-5) and B(B-+/- -> psi(2S)pi(+/-)) = (2.52 +/- 0.26 +/- 0.15) x 10(-5); where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measured CP asymmetries in these modes are A(CP)(J/psi pi) = 0.005 +/- 0.027 +/- 0.011 and A(CP)(psi(2S)pi) = 0.048 +/- 0.090 +/- 0.011 with no evidence of direct CP violation seen.

Measurements of the branching fractions and CP asymmetries of B± →J/ψπ± and B± →ψ(2S)π± decays / R., A., C. A., B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., F., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 85:9(2012), pp. 091105-1-091105-8. [10.1103/PhysRevD.85.091105]

Measurements of the branching fractions and CP asymmetries of B± →J/ψπ± and B± →ψ(2S)π± decays

BIZZETI, Andrea;
2012

Abstract

A study of B-+/- -> J/psi pi(+/-) and B-+/- -> psi(2S)pi(+/-) decays is performed with data corresponding to 0.37 fb(-1) of proton-proton collisions at root s = 7 TeV. Their branching fractions are found to be B(B-+/- -> J/psi pi(+/-)) = (3.88 +/- 0.11 +/- 0.15) x 10(-5) and B(B-+/- -> psi(2S)pi(+/-)) = (2.52 +/- 0.26 +/- 0.15) x 10(-5); where the first uncertainty is related to the statistical size of the sample and the second quantifies systematic effects. The measured CP asymmetries in these modes are A(CP)(J/psi pi) = 0.005 +/- 0.027 +/- 0.011 and A(CP)(psi(2S)pi) = 0.048 +/- 0.090 +/- 0.011 with no evidence of direct CP violation seen.
2012
85
9
091105-1
091105-8
Measurements of the branching fractions and CP asymmetries of B± →J/ψπ± and B± →ψ(2S)π± decays / R., A., C. A., B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., J. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., F., A., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 85:9(2012), pp. 091105-1-091105-8. [10.1103/PhysRevD.85.091105]
R., Aaij; C. A., Beteta; B., Adeva; M., Adinolfi; C., Adrover; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander; S., Ali; G., Alk...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/743696
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