期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 7, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP07(2022)058
关键词
Properties of Hadrons; Charm Flavour Violation
资金
- Croatian Science Foundation (HRZZ) project Heavy hadron decays and lifetimes [IP-2019-04-7094]
- Alexander von Humboldt Foundation - German Federal Ministry of Education and Research
- Munich Institute for Astroand Particle Physics (MIAPP) - Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under Germany's Excellence Strategy [EXC-2094 390783311]
We provide a comprehensive study on the lifetimes of singly charmed baryons and mesons, considering the heavy quark expansion with all known corrections. Our predictions for lifetimes, lifetime ratios, and semileptonic branching ratios of singly charmed baryons are in agreement with experimental observations. The results for charmed meson lifetimes and semileptonic decay rates are also consistent with recent studies and experimental results.
We provide an extensive study of the lifetimes of singly charmed baryons and mesons, within the heavy quark expansion with all known corrections included. A special attention is devoted to the choice of the charm mass and wavefunctions of heavy baryons. We give our predictions for lifetimes, lifetime ratios, and semileptonic branching ratios of singly charmed baryons. Our results accommodate the experimentally-favoured hierarchy of singly charmed baryon lifetimes tau(Xi(0)(c)) < tau(Lambda(+)(c)) < tau (Omega(0)(c)) < tau(Xi(+)(c)), in contrast to earlier theoretical findings. Predictions for charmed meson lifetimes and semileptonic decay rates are in agreement with a recent comprehensive study and experimental results within
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