A search for the B-s(0) -> D*(+/-) D--/+ decay is performed using proton-proton collision data at centre-of-mass energies of 7, 8 and 13TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). The decay is observed with a high significance and its branching fraction relative to the B-0 -> D*(+/-) D--/+ decay is measured to be B(B-s(0) -> D*D-+/-(-/+))/B(B-0 -> D*D-+/-(-/+)) = 0.137 +/- 0.017 +/- 0.002 +/- 0.006, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B-s(0) and B-0 hadronisation fractions.
Aaij, R., Beteta, C.a., Adeva, B., Adinolfi, M., Aidala, C.a., Ajaltouni, Z., et al. (2021). Observation of the Bs0 -> (DD -/+)-D-*+/- decay. JOURNAL OF HIGH ENERGY PHYSICS(3) [10.1007/JHEP03(2021)099].
Observation of the Bs0 -> (DD -/+)-D-*+/- decay
Adinolfi, M.;Albicocco, P.;Jr.;Archilli, F.;Carbone, A.;Carboni, G.;Cattaneo, M.;Chen, S.;D'Ambrosio, C.;De Capua, S.;Ferrari, F.;Fontana, M.;Gao, Y.;Li, Y.;Pastore, A.;Petrucci, S.;Santovetti, E.Membro del Collaboration Group
;Wang, J.;Wang, Z.;Zhang, L.;
2021-01-01
Abstract
A search for the B-s(0) -> D*(+/-) D--/+ decay is performed using proton-proton collision data at centre-of-mass energies of 7, 8 and 13TeV collected by the LHCb experiment, corresponding to an integrated luminosity of 9 fb(-1). The decay is observed with a high significance and its branching fraction relative to the B-0 -> D*(+/-) D--/+ decay is measured to be B(B-s(0) -> D*D-+/-(-/+))/B(B-0 -> D*D-+/-(-/+)) = 0.137 +/- 0.017 +/- 0.002 +/- 0.006, where the first uncertainty is statistical, the second systematic and the third is due to the uncertainty on the ratio of the B-s(0) and B-0 hadronisation fractions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
