A search is performed for the charmless three-body decays of the Λ0b and Ξ0b baryons to the final states Λ h+ h′−, where h(′) = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb^−1 of pp collisions, collected by the LHCb experiment. The Λ0b → Λ K+ π− and Λ0b → Λ K+ K− decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ0b → Λ π+ π− decay and limits are set on the branching fractions of Ξ0b baryon decays to the Λ h+ h′− final states.

Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., et al. (2016). Observations of Λ0b → Λ K+ π− and Λ0b → Λ K+ K− Decays and Searches for Other Λ0b and Ξ0b Decays to Λ h+ h′− Final States. JOURNAL OF HIGH ENERGY PHYSICS, 2016(5), 0-21 [10.1007/JHEP05(2016)081].

Observations of Λ0b → Λ K+ π− and Λ0b → Λ K+ K− Decays and Searches for Other Λ0b and Ξ0b Decays to Λ h+ h′− Final States

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;ZUCCHELLI, STEFANO
2016

Abstract

A search is performed for the charmless three-body decays of the Λ0b and Ξ0b baryons to the final states Λ h+ h′−, where h(′) = π or K. The analysis is based on a data sample, corresponding to an integrated luminosity of 3 fb^−1 of pp collisions, collected by the LHCb experiment. The Λ0b → Λ K+ π− and Λ0b → Λ K+ K− decays are observed for the first time and their branching fractions and CP asymmetry parameters are measured. Evidence is seen for the Λ0b → Λ π+ π− decay and limits are set on the branching fractions of Ξ0b baryon decays to the Λ h+ h′− final states.
2016
Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., et al. (2016). Observations of Λ0b → Λ K+ π− and Λ0b → Λ K+ K− Decays and Searches for Other Λ0b and Ξ0b Decays to Λ h+ h′− Final States. JOURNAL OF HIGH ENERGY PHYSICS, 2016(5), 0-21 [10.1007/JHEP05(2016)081].
Aaij, R.; Abellán Beteta, C.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvar...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/539737
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