Observation of the decay and evidence for
The first observation of the rare decay B0s→Φπ+π– and evidence for B0→Φπ+π– are reported, using pp collision data recorded by the LHCb detector at center-of-mass energies √s = 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb–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]×10–6 and [1.82±0.25±0.41±0.14]×10–7 for B0s→Φπ+π– and B0→Φπ+π– respectively, where the uncertainties are statistical, systematic and from the normalization mode B0s→ΦΦ. A combined analysis of the π+π– mass spectrum and the decay angles of the final-state particles identifies the exclusive decays B0s→Φf0(980), B0s→Φf2(1270), and B0s→Φρ0 with branching fractions of [1.12±0.16+0.09–0.08±0.11]×10–6, [0.61±0.13+0.12–0.05±0.06]×10–6 and [2.7±0.7±0.2±0.2]×10–7, respectively.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- LHCb Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1525193
- Journal Information:
- Physical Review D, Vol. 95, Issue 1; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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