Journal article
Observation of the decay B0s to φπ+π- and evidence for B0 to φπ+π-
- Abstract:
- The first observation of the rare decay B0s to φπ+π- and evidence for B0 to φπ+π- are reported, using pp collision data recorded by the LHCb detector at centre-of-mass energies √s = 7 and 8 TeV, corresponding to an integrated luminosity of 3fb^-1. The branching fractions in the π+π- invariant mass range 400 < m(π+π-) < 1600 MeV/c2 are [3.48 ± 0.23 ± 0.17 ± 0.35] X 10^-6 and [1.82 ± 0.25 ± 0.41 ± 0.14] X 10^-7 for B0s to φπ+π- and B0 to φπ+π- respectively, where the uncertainties are statistical, systematic and from the normalisation mode B0s to φπ+π-. A combined analysis of the π+π- mass spectrum and the decay angles of the final-state particles identifies the exclusive decays B0s to φf0(980), B0s to φf2(1270), and B0s →ϕρ0 with branching fractions of [1.12 ± 0.16^+0.09-0.08 ± 0.11] X 10^-6, [0.61 ± 0.13^+0.12-0.05 ± 0.06] X 10^-6 and [2.7 ± 0.7 ± 0.2 ± 0.2] X 10^-7, respectively.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 513.0KB, Terms of use)
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- Publisher copy:
- 10.1103/PhysRevD.95.012006
Authors
- Publisher:
- American Physical Society
- Journal:
- Physical Review D More from this journal
- Volume:
- 95
- Pages:
- 012006
- Publication date:
- 2017-01-01
- Acceptance date:
- 2016-11-23
- DOI:
- Keywords:
- Pubs id:
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pubs:653402
- UUID:
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uuid:476271b9-1298-41f7-aa29-a3d057fd6f1c
- Local pid:
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pubs:653402
- Source identifiers:
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653402
- Deposit date:
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2016-12-05
Terms of use
- Copyright holder:
- CERN
- 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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