Decays of the form B0(s) → J/ψ K0S h+ h(′)− (h(′) = K, π) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb^−1 recorded with the LHCb detector. The first observation of the B0s → J/ψ K0S K± π∓ decay is reported, with significance in excess of 10 standard deviations. The B0 → J/ψ K0S K+ K− decay is also observed for the first time. The branching fraction of B0 → J/ψ K0S π+ π− is determined, to significantly better precision than previous measurements, using B0 → J/ψ K0S as a normalisation channel. Branching fractions and upper limits of the other B0(s) → J/ψ K0S h+ h(′)− modes are determined relative to that of the B0 → J/ψ K0S π+ π− decay.

R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Observation of the B0s → J/ψ K0S K± π∓ Decay. JOURNAL OF HIGH ENERGY PHYSICS, 2014(7), 0-28 [10.1007/JHEP07(2014)140].

Observation of the B0s → J/ψ K0S K± π∓ Decay

CARBONE, ANGELO;GALLI, DOMENICO;MOGGI, NICCOLO';MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;
2014

Abstract

Decays of the form B0(s) → J/ψ K0S h+ h(′)− (h(′) = K, π) are searched for in proton-proton collision data corresponding to an integrated luminosity of 1.0 fb^−1 recorded with the LHCb detector. The first observation of the B0s → J/ψ K0S K± π∓ decay is reported, with significance in excess of 10 standard deviations. The B0 → J/ψ K0S K+ K− decay is also observed for the first time. The branching fraction of B0 → J/ψ K0S π+ π− is determined, to significantly better precision than previous measurements, using B0 → J/ψ K0S as a normalisation channel. Branching fractions and upper limits of the other B0(s) → J/ψ K0S h+ h(′)− modes are determined relative to that of the B0 → J/ψ K0S π+ π− decay.
2014
R. Aaij, B. Adeva, M. Adinolfi, A. Affolder, Z. Ajaltouni, J. Albrecht, et al. (2014). Observation of the B0s → J/ψ K0S K± π∓ Decay. JOURNAL OF HIGH ENERGY PHYSICS, 2014(7), 0-28 [10.1007/JHEP07(2014)140].
R. Aaij; B. Adeva; M. Adinolfi; A. Affolder; Z. Ajaltouni; J. Albrecht; F. Alessio; M. Alexander; S. Ali; G. Alkhazov; P. Alvarez Cartelle; A. A. Alve...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/329116
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