A search is performed for the as yet unobserved baryonic Lambda(0)(b) -> Lambda eta' and Lambda(0)(b) -> Lambda eta decays with 3 fb(-1) of proton-proton collision data recorded by the LHCb experiment. The B-0 -> K-s(0)eta' decay is used as a normalisation channel. No significant signal is observed for the Lambda(0)(b) -> Lambda eta' decay. An upper limit is found on the branching fraction of B(Lambda(0)(b) -> Lambda eta') < 3.1 x 10(-6) at 90% confidence level. Evidence is seen for the presence of the Lambda(0)(b) -> Lambda eta 0 decay at the level of 3 sigma significance, with a branching fraction B(Lambda(0)(b) -> Lambda eta) = (9.3(-5.3)(+7.3)) x 10(-6).

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2015). Search for the Λb 0→Λη ′ and Λb 0→ Λη decays with the LHCb detector. JOURNAL OF HIGH ENERGY PHYSICS, 2015(9) [10.1007/JHEP09(2015)006].

Search for the Λb 0→Λη ′ and Λb 0→ Λη decays with the LHCb detector

Borsato, M;Calvi, M;Carniti, P;Gotti, C;Martinelli, M;Petruzzo, M;
2015

Abstract

A search is performed for the as yet unobserved baryonic Lambda(0)(b) -> Lambda eta' and Lambda(0)(b) -> Lambda eta decays with 3 fb(-1) of proton-proton collision data recorded by the LHCb experiment. The B-0 -> K-s(0)eta' decay is used as a normalisation channel. No significant signal is observed for the Lambda(0)(b) -> Lambda eta' decay. An upper limit is found on the branching fraction of B(Lambda(0)(b) -> Lambda eta') < 3.1 x 10(-6) at 90% confidence level. Evidence is seen for the presence of the Lambda(0)(b) -> Lambda eta 0 decay at the level of 3 sigma significance, with a branching fraction B(Lambda(0)(b) -> Lambda eta) = (9.3(-5.3)(+7.3)) x 10(-6).
Articolo in rivista - Articolo scientifico
B physics; Flavor physics; Hadron-Hadron Scattering; Nuclear and High Energy Physics
English
2015
2015
9
6
open
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2015). Search for the Λb 0→Λη ′ and Λb 0→ Λη decays with the LHCb detector. JOURNAL OF HIGH ENERGY PHYSICS, 2015(9) [10.1007/JHEP09(2015)006].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187912
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