Mathad, A. (2017) First observation of the charmless decay of Ξ− b → pK−K− at LHCb. Il nuovo cimento C, 40 (5). pp. 1-8. ISSN 1826-9885
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Abstract
We present here the search for Ξ− b and Ω− b baryon decays to the charmless hadronic final states ph−h− at the LHCb detector, where h() denotes a kaon or pion. The analysis is based on a sample of proton-proton collision data collected at centre-of-mass energies √s = 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb−1. We observe the decay of Ξ− b → pK−K− with a significance of 8.7 standard deviations, and evidence at the level of 3.4 standard deviations is found for the Ξ− b → pK−π− decay. This result is the first ever observation of a Ξ− b baryon decaying into charmless final state.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 17 Nov 2020 10:24 |
| Last Modified: | 17 Nov 2020 10:24 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20027 |
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