Journal article
First observation of the rare purely baryonic decay B0 → pp¯
- Abstract:
- The first observation of the decay of a B0 meson to a purely baryonic final state, B0→pp¯ , is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3.0 fb^−1. The branching fraction is determined to be B(B0→pp¯)=(1.25±0.27±0.18)×10^−8, where the first uncertainty is statistical and the second systematic. The decay mode B0→pp¯ is the rarest decay of the B0 meson observed to date. The decay B0s→pp¯ is also investigated. No signal is seen and the upper limit B(B0s→pp¯)<1.5×10^−8 at 90% confidence level is set on the branching fraction.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 597.5KB, Terms of use)
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- Publisher copy:
- 10.1103/physrevlett.119.232001
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review Letters More from this journal
- Volume:
- 119
- Issue:
- 23
- Pages:
- 232001
- Publication date:
- 2017-12-01
- Acceptance date:
- 2017-10-17
- DOI:
- EISSN:
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1079-7114
- ISSN:
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0031-9007
- Pmid:
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29286678
- Language:
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English
- Keywords:
- Pubs id:
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pubs:726145
- UUID:
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uuid:4e44775c-fc1f-416a-8d1a-5fc5b1aa8c7c
- Local pid:
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pubs:726145
- Source identifiers:
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726145
- Deposit date:
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2018-02-23
Terms of use
- Copyright holder:
- Harnew et al
- Copyright date:
- 2017
- Notes:
- 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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