期刊
PHYSICAL REVIEW D
卷 95, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.012006
关键词
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资金
- CERN
- CAPES (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- MPG (Germany)
- INFN (Italy)
- FOM (The Netherlands)
- NWO (The Netherlands)
- MNiSW (Poland)
- NCN (Poland)
- MEN/IFA (Romania)
- MinES (Russia)
- FASO (Russia)
- MinECo (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NASU (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- AvH Foundation (Germany)
- EPLANET (European Union)
- Marie Sklodowska-Curie Actions (European Union)
- ERC (European Union)
- Conseil General de Haute-Savoie, Region Auvergne (France)
- Labex ENIGMASS, Region Auvergne (France)
- OCEVU, Region Auvergne (France)
- RFBR (Russia)
- Yandex LLC (Russia)
- XuntaGal (Spain)
- GENCAT (Spain)
- Herchel Smith Fund (United Kingdom)
- Royal Society (United Kingdom)
- Royal Commission for the Exhibition of 1851 (United Kingdom)
- Leverhulme Trust (United Kingdom)
- STFC [ST/N000331/1, ST/L003538/1, ST/K00140X/1, 1708182, ST/M004058/1, 1641747, LHCb Upgrades, LHCb, ST/J004332/1, ST/K003410/1, ST/K004646/1, 1707993, ST/H006737/1, ST/N001370/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K004646/1, LHCb, ST/N001370/1, GRIDPP, 1707993, 1708182, ST/J004332/1, ST/K003410/1, ST/N000331/1, ST/H006737/1, 1565116, 1565032, 1415632, LHCb Upgrades, 1564711, 1641747, ST/K00140X/1, ST/M004058/1, 1416165, ST/N000250/1, ST/L003538/1] Funding Source: researchfish
The first observation of the rare decay B-s(0) -> phi pi(+) pi(-) and evidence for B-0 -> phi pi(+) pi(-) are reported, using pp collision data recorded by the LHCb detector at center-of-mass energies root s = 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb(-1). The branching fractions in the pi(+) pi(-) invariant mass range 400 < m(pi(+) pi(-)) < 1600 MeV/c(2) 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 B-s(0) -> phi pi(+) pi(-) and B-0 -> phi pi(+) pi(-) respectively, where the uncertainties are statistical, systematic and from the normalization mode B-s(0)-> phi phi. A combined analysis of the pi(+) pi(-) mass spectrum and the decay angles of the final-state particles identifies the exclusive decays B-s(0) -> phi f(0)(980), B-s(0) -> phi f(2)(1270), and B-s(0) -> phi rho(0) with branching fractions of [1.12 +/- 0.16(-0.08)(+0.09) +/- 0.11] x 10(-6), [0.61 +/- 0.13(-0.05)(+0.12) +/- 0.06] x 10-6 and [2.7 +/- 0.7 +/- 0.2 +/- 0.2] x 10(-7), respectively.
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