Journal article
Observation of the decay Ξ−b→pK−K
- Abstract:
- Decays of the Ξ−b and Ω−b baryons to the charmless final states ph−h'−, where h(') denotes a kaon or pion, are searched for with the LHCb detector. The analysis is based on a sample of proton-proton collision data collected at center-of-mass energies √s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb^−1. The decay Ξ−b→pK−K− is observed 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. Results are reported, relative to the B−→K+K−K− normalization channel, for the products of branching fractions and b-hadron production fractions. The branching fractions of Ξ−b→pK−π− and Ξ−b→pπ−π− relative to Ξ−b→pK−K− decays are also measured.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 331.1KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevLett.118.071801
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 118
- Issue:
- 7
- Pages:
- 071801
- Publication date:
- 2017-02-01
- Acceptance date:
- 2017-01-13
- DOI:
- EISSN:
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1079-7114
- ISSN:
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0031-9007
- Pubs id:
-
pubs:715223
- UUID:
-
uuid:10e850e6-e2f8-4bcf-9030-a4e971af2095
- Local pid:
-
pubs:715223
- Deposit date:
-
2017-11-30
Terms of use
- Copyright holder:
- CERN, for the LHCb Collaboration
- Copyright date:
- 2017
- Notes:
- © 2017 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
- Licence:
- CC Attribution (CC BY)
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