期刊
PHYSICAL REVIEW LETTERS
卷 109, 期 17, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.172003
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资金
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- CERN
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- HGF (Germany)
- MPG (Germany)
- SFI (Ireland)
- INFN (Italy)
- FOM (Netherlands)
- NWO (Netherlands)
- SCSR (Poland)
- ANCS (Romania)
- MinES of Russia (Russia)
- Rosatom (Russia)
- MICINN (Spain)
- XuntaGal (Spain)
- GENCAT (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NAS Ukraine (Ukraine)
- STFC (United Kingdom)
- NSF (USA)
- ERC under FP7
- Region Auvergne
- Science and Technology Facilities Council [ST/K000705/1, ST/J004820/1, ST/H006737/1, ST/K001310/1 LHCb Upgrades, ST/K001604/1 DMUK, ST/K001604/1 LHCb Upgrades, ST/K001604/1 GRIDPP, ST/J005614/1, ST/H00100X/2, ST/L001144/1, ST/K001604/1 MICE/UKNF, ST/K001310/1, GRIDPP, ST/K00073X/1, ST/K001310/1 ATLAS Upgrades, ST/K001361/1 ATLAS Upgrades, 1208164, LHCb, PP/E000355/1, ST/H00100X/1, ST/G502412/1, ST/H001069/1, ST/K001361/1 LHCb, ST/K001310/1 LHCb, ST/K00140X/1, ST/H001085/2, ST/F007094/1, ST/K001604/1, ST/F008015/1, ST/K001418/1, ST/H001093/2, ST/K001604/1 T2K, ST/I002839/1, ST/M001431/1, ST/K000616/1, ST/H001026/1, PP/E000347/1, ST/K001361/1 LHCb Upgrades, ST/H001093/1, ST/K001361/1, ST/K001604/1 CMS Upgrade, ST/K001256/1, PP/E002722/1, ST/K001604/1 SuperNEMO, ST/K001361/1 ATLAS, ST/H00081X/2, ST/K001604/1 LHCb, ST/L001195/1, LHCb Upgrades, ST/L001225/1, ST/H00081X/1, 1096173, ST/M001474/1, ST/I505572/1, ST/G005974/1, ST/H001026/2, ST/K001310/1 ATLAS, ST/K001361/1 MINOS/MINOS+, ST/H001069/2] Funding Source: researchfish
- STFC [ST/H001085/2, ST/H006737/1, ST/H001026/1, ST/H001093/1, ST/F008015/1, ST/L001225/1, PP/E000355/1, ST/K00140X/1, ST/K000705/1, ST/J004820/1, ST/K000616/1, ST/J005614/1, ST/H001069/2, ST/I002839/1, ST/F007094/1, ST/G502412/1, PP/E002722/1, ST/H001069/1, ST/K001361/1, LHCb Upgrades, ST/I505572/1, LHCb, ST/H001093/2, ST/H00081X/1, ST/M001431/1, ST/H00100X/1, ST/L001144/1, ST/H00100X/2, PP/E000347/1, ST/H00081X/2, ST/K001604/1, ST/G005974/1, ST/H001026/2, ST/K00073X/1, ST/K004646/1, ST/L001195/1] Funding Source: UKRI
Using pp collision data corresponding to 1.0 fb(-1) integrated luminosity collected by the LHCb detector, two narrow states are observed in the Lambda(0)(b) pi(+) pi(-) spectrum with masses 5911.97 +/- 0.12(stat) +/- 0.02(syst) +/- 0.66(Lambda(0)(b) mass) MeV/c(2) and 5919.77 +/- 0.08(stat) +/- 0.02(syst) +/- 0.66(Lambda(0)(b) mass) MeV/c(2). The significances of the observations are 5.2 and 10.2 standard deviations, respectively. These states are interpreted as the orbitally excited Lambda(0)(b) baryons, Lambda(b)*(0)(5912) and Lambda(b)*(0)(5920).
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