Study of DsJ decays to D*K in inclusive e+e- interactions

الأصل · EN

We observe the decays D*ₛ₁(2710)+ → D*K and D*sJ(2860)+ → D*K and measure their branching fractions relative to the D K final state. We also observe, in the D*K mass spectrum, a new broad structure at a mass of (3044 ± 8stat (⁺³⁰₋₅)syst) MeV/c² having a width Γ=(239 ± 35stat (⁺⁴⁶₋₄₂)syst) MeV. To obtain this result we use 470 fb⁻¹ of data recorded by the BaBar detector at the PEPII asymmetric-energy e+e- storage rings at the Stanford Linear Accelerator Center running at center-of-mass energies near 10.6 GeV.