Observation of Overlapping Spin-1 and Spin-3 D ¯ 0 K − Resonances at Mass 2.86 GeV / c 2
Author(s)
Williams, Michael
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© 2014 CERN, for the LHCb collaboration. The resonant substructure of Bs0→D¯0K-π+ decays is studied using a data sample corresponding to an integrated luminosity of 3.0fb-1 of pp collision data recorded by the LHCb detector. An excess at m(D¯0K-)≈2.86GeV/c2 is found to be an admixture of spin-1 and spin-3 resonances. Therefore, the DsJ∗(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 Ds2∗(2573)- meson are measured, giving the most precise determinations to date.
Date issued
2014Department
Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Aaij, R., et al. "Observation of Overlapping Spin-1 and Spin-3 (D)over-Bar(0)K(-)Resonances at Mass 2.86 Gev/C(2)." Physical Review Letters 113 16 (2014).
Version: Final published version