The first observation of the B0s → D∗∓s K± decay is reported using 3.0 fb−1of proton-proton collision data collected by the LHCb experiment. The D∗∓s mesons are reconstructed through the decay chain D∗∓s → γD∓s(K∓K±π∓). The branching fraction relative to that for B0s → D∗−s π+ decays is measured to beB(B0s → D∗∓s K±)/B(B0s → D∗−s π+) = 0.068 ± 0.005+0.003−0.002 ,where the first uncertainty is statistical and the second is systematic. Using a recent measurement of B(B0s → D∗−s π+), the absolute branching fraction of B0s → D∗∓s K± is measured asB(B0s → D∗∓s K±) = (16.3 ± 1.2(stat)+0.7−0.5(syst) ± 4.8(norm)) × 10−5, where the third uncertainty is due to the uncertainty on the branching fraction of the normalisation channel.

First observation and measurement of the branching fraction for the decay B(formula presented.) / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2015:6(2015). [10.1007/JHEP06(2015)130]

First observation and measurement of the branching fraction for the decay B(formula presented.)

Capriotti, L.;Casse, G.;Sarti, A.;Sciubba, A.;
2015

Abstract

The first observation of the B0s → D∗∓s K± decay is reported using 3.0 fb−1of proton-proton collision data collected by the LHCb experiment. The D∗∓s mesons are reconstructed through the decay chain D∗∓s → γD∓s(K∓K±π∓). The branching fraction relative to that for B0s → D∗−s π+ decays is measured to beB(B0s → D∗∓s K±)/B(B0s → D∗−s π+) = 0.068 ± 0.005+0.003−0.002 ,where the first uncertainty is statistical and the second is systematic. Using a recent measurement of B(B0s → D∗−s π+), the absolute branching fraction of B0s → D∗∓s K± is measured asB(B0s → D∗∓s K±) = (16.3 ± 1.2(stat)+0.7−0.5(syst) ± 4.8(norm)) × 10−5, where the third uncertainty is due to the uncertainty on the branching fraction of the normalisation channel.
2015
Branching fraction B physics Flavor physics Hadron-Hadron Scattering
01 Pubblicazione su rivista::01a Articolo in rivista
First observation and measurement of the branching fraction for the decay B(formula presented.) / Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A.A., Amato, S., Amerio, S., Amhis, Y., An, L., Anderlini, L., Anderson, J., Andreotti, M., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2015:6(2015). [10.1007/JHEP06(2015)130]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1074831
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