A search for the rare two-body charmless baryonic decay B+→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B+→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B+→KS0π+ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Evidence for the two-body charmless baryonic decay B+→ pΛ¯. JOURNAL OF HIGH ENERGY PHYSICS, 2017(4) [10.1007/JHEP04(2017)162].

Evidence for the two-body charmless baryonic decay B+→ pΛ¯

Belloli, N.;Borgheresi, A.;Borsato, M.;Calvi, M.;Carniti, P.;Cassina, L.;Fazzini, D.;Gotti, C.
;
Grillo, L.;Martinelli, M.;Matteuzzi, C.;Petruzzo, M.;
2017

Abstract

A search for the rare two-body charmless baryonic decay B+→ pΛ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb−1, collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B+→pΛ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B+→KS0π+ decay for normalisation,(Formula Presented.)where the first uncertainty is statistical and the second systematic.[Figure not available: see fulltext.].
Articolo in rivista - Articolo scientifico
B physics; Branching fraction; Flavor physics; Hadron-Hadron scattering (experiments); Nuclear and High Energy Physics
English
2017
2017
4
162
open
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Evidence for the two-body charmless baryonic decay B+→ pΛ¯. JOURNAL OF HIGH ENERGY PHYSICS, 2017(4) [10.1007/JHEP04(2017)162].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/181741
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