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Observation of Overlapping Spin-1 and Spin-3 D¯0K− Resonances at Mass 2.86 GeV/c2статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: LHCb Collaboration (R A.(., Образцов В.Ф.
- Журнал: Physical Review Letters
- Том: 113
- Номер: 162001
- Год издания: 2014
- Издательство: American Physical Society
- Местоположение издательства: United States
- DOI: 10.1103/PhysRevLett.113.162001
- Аннотация: The resonant substructure of B0s→D¯0K−π+ decays is studied using a data sample corresponding to an integrated luminosity of 3.0 fb−1 of pp collision data recorded by the LHCb detector. An excess at m(D¯0K−)≈2.86 GeV/c2 is found to be an admixture of spin-1 and spin-3 resonances. Therefore, the D∗sJ(2860)− state previously observed in inclusive e+e−→D¯0K−X and pp→D¯0K−X processes consists of at least two particles. This is the first observation of a heavy flavored spin-3 resonance, and the first time that any spin-3 particle has been seen to be produced in B decays. The masses and widths of the new states and of the D∗s2(2573)− meson are measured, giving the most precise determinations to date.
- Добавил в систему: Образцов Владимир Федорович