The decay mode B-s(0) -> (DsK +/-)-K--/+ allows for one of the theoretically cleanest measurements of the CKM angle gamma through the study of time-dependent CP violation. This paper reports a measurement of its branching fraction relative to the Cabibbo-favoured mode B-s(0) -> D-s(-)pi(+) based on a data sample corresponding to 0.37 fb(-1) of proton-proton collisions at root s = 7TeV collected in 2011 with the LHCb detector. In addition, the ratio of B meson production fractions f(s)/f(d), determined from semileptonic decays, together with the known branching fraction of the control channel B-0 -> D-pi(+), is used to perform an absolute measurement of the branching fractions: B (B-s(0) -> D-s(-)pi(+)) = (2.95 +/- 0.05 +/- 0.17(-0.22)(+0.18)) x 10(-3), B(B-s(0) -> (DK +/-)-K--/+) = (1.90 +/- 0.12 +/- 0.13(-0.14)(+0.12)) x 10(-4), where the first uncertainty is statistical, the second the experimental systematic uncertainty, and the third the uncertainty due to f(s)/f(d).

Measurements of the branching fractions of the decays B-s(0) -> (DsK +/-)-K--/+ and B-s(0) -> D-s(-)pi(+) / 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., A. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., F., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2012:6(2012), p. 115. [10.1007/jhep06(2012)115]

Measurements of the branching fractions of the decays B-s(0) -> (DsK +/-)-K--/+ and B-s(0) -> D-s(-)pi(+)

SARTI, ALESSIO;SCIUBBA, Adalberto;
2012

Abstract

The decay mode B-s(0) -> (DsK +/-)-K--/+ allows for one of the theoretically cleanest measurements of the CKM angle gamma through the study of time-dependent CP violation. This paper reports a measurement of its branching fraction relative to the Cabibbo-favoured mode B-s(0) -> D-s(-)pi(+) based on a data sample corresponding to 0.37 fb(-1) of proton-proton collisions at root s = 7TeV collected in 2011 with the LHCb detector. In addition, the ratio of B meson production fractions f(s)/f(d), determined from semileptonic decays, together with the known branching fraction of the control channel B-0 -> D-pi(+), is used to perform an absolute measurement of the branching fractions: B (B-s(0) -> D-s(-)pi(+)) = (2.95 +/- 0.05 +/- 0.17(-0.22)(+0.18)) x 10(-3), B(B-s(0) -> (DK +/-)-K--/+) = (1.90 +/- 0.12 +/- 0.13(-0.14)(+0.12)) x 10(-4), where the first uncertainty is statistical, the second the experimental systematic uncertainty, and the third the uncertainty due to f(s)/f(d).
2012
hadron-hadron scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Measurements of the branching fractions of the decays B-s(0) -> (DsK +/-)-K--/+ and B-s(0) -> D-s(-)pi(+) / 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., A. A., A., S., A., Y., A., J., A., R. B., A., O. A., G., F., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2012:6(2012), p. 115. [10.1007/jhep06(2012)115]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/493842
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