We report the observation of a new DsJ meson produced in B+→D̄0DsJ→D̄0D0K+. This state has a mass of M=2708±9-10+11MeV/c2, a width Γ=108±23-31+36MeV/c2 and a 1- spin-parity. The statistical significance of this observation is 8.4σ. The results are based on an analysis of 449×106 BB̄ events collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)