Measurements of b-hadron masses are performed with the exclusive decay modes B+ --> J/psi K+, B-0 --> J/psi K-0*, B-0 --> J/psi K-S(0), B-s(0) --> j/psi phi and Lambda(0)(b) --> J/psi Lambda using all integrated luminosity of 35 pb(-1) collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/psi --> mu(+)mu(-) decays and verified to be known to a relative precision of 2 x 10(-4) using other two-body decays. The results are more precise than previous measurements, particularly ill the case of the B-s(0) and Lambda(0)(b) masses. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). Measurement of b-hadron masses. PHYSICS LETTERS. SECTION B, 708(3-5), 241-248 [10.1016/j.physletb.2012.01.058].

Measurement of b-hadron masses

CALVI, MARTA;FANCHINI, ERICA;KUCHARCZYK, MARCIN;MUSY, MARCO;PEREGO, DAVIDE LUIGI;Pessina, G;
2012

Abstract

Measurements of b-hadron masses are performed with the exclusive decay modes B+ --> J/psi K+, B-0 --> J/psi K-0*, B-0 --> J/psi K-S(0), B-s(0) --> j/psi phi and Lambda(0)(b) --> J/psi Lambda using all integrated luminosity of 35 pb(-1) collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/psi --> mu(+)mu(-) decays and verified to be known to a relative precision of 2 x 10(-4) using other two-body decays. The results are more precise than previous measurements, particularly ill the case of the B-s(0) and Lambda(0)(b) masses. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.
Articolo in rivista - Articolo scientifico
Beauty mesons, Heavy flavours
English
2012
708
3-5
241
248
none
Aaij, R., Beteta, C., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., et al. (2012). Measurement of b-hadron masses. PHYSICS LETTERS. SECTION B, 708(3-5), 241-248 [10.1016/j.physletb.2012.01.058].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/51056
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