期刊
PHYSICAL REVIEW LETTERS
卷 128, 期 16, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.162001
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资金
- CERN
- CAPES (Brazil)
- CNPq (Brazil)
- FAPERJ (Brazil)
- FINEP (Brazil)
- MOST (China)
- NSFC (China)
- CNRS/IN2P3 (France)
- BMBF (Germany)
- DFG (Germany)
- MPG (Germany)
- INFN (Italy)
- NWO (Netherlands)
- MNiSW (Poland)
- NCN (Poland)
- MEN/IFA (Romania)
- MSHE (Russia)
- MICINN (Spain)
- SNSF (Switzerland)
- SER (Switzerland)
- NASU (Ukraine)
- STFC (United Kingdom)
- DOE NP (USA)
- NSF (USA)
- ARC (Australia)
- ARDC (Australia)
- AvH Foundation (Germany)
- EPLANET (European Union)
- Marie Sklodowska-Curie Actions (European Union)
- ERC (European Union)
- A*MIDEX (France)
- ANR (France)
- IPhU (France)
- Labex P2IO (France)
- Region Auvergne-Rhone-Alpes (France)
- Key Research Program of Frontier Sciences of CAS (China)
- CAS PIFI (China)
- CAS CCEPP (China)
- Fundamental Research Funds for the Central Universities (China)
- Sci. & Tech. Program of Guangzhou (China)
- RFBR (Russia)
- RSF (Russia)
- Yandex LLC (Russia)
- GVA (Spain)
- XuntaGal (Spain)
- GENCAT (Spain)
- Leverhulme Trust (United Kingdom)
- Royal Society (United Kingdom)
- UKRI (United Kingdom)
Two narrow resonant states, identified as excited Ω0b baryons, are observed in the ρ0ΩbK- mass spectrum using data from the LHCb experiment. Their masses, widths, and resonant structure are in good agreement with the expectations for a doublet of 1D Ω0b resonances.
Two narrow resonant states are observed in the ??0bK??????? mass spectrum using a data sample of protonproton collisions at a center-of-mass energy of 13 TeV, collected by the LHCb experiment and corresponding to an integrated luminosity of 6 fb???1. The minimal quark content of the ??0bK??????? system indicates that these are excited ??0b baryons. The masses of the ??b??6327??0 and ??b??6333??0 states are spectively, with a mass splitting of ??m 1/4 5.41??0.26 systematic, and due to the ??0b mass measurement. The measured natural widths of these states are consistent (95%) credibility level. The significance of the two-peak hypothesis is larger than nine (five) Gaussian standard deviations compared to the no-peak (one-peak) hypothesis. The masses, widths, and resonant structure of the new states are in good agreement with the expectations for a doublet of 1D ??0b resonances.
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