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.].
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Titolo: | Evidence for the two-body charmless baryonic decay B+→ pΛ¯ |
Autori: | |
Data di pubblicazione: | 2017 |
Rivista: | |
Handle: | http://hdl.handle.net/11392/2370948 |
Appare nelle tipologie: | 03.1 Articolo su rivista |