Observation in BaBar of a Narrow Resonance in the D s π 0 System at 2317
نویسنده
چکیده
The BABAR collaboration has observed a state of mass 2317 MeV/c 2 which decays to D s π 0 , using 91 fb −1 of data from asymmetric e + e − collisions of energy around 10.6 GeV produced by the PEP-II storage ring. The observed width is compatible with the experimental resolution, indicating that the state is narrow, with Γ < 10 MeV. Properties of the state are presented, and implications are discussed.
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تاریخ انتشار 2004