Author:
Li 李 Chunhua 春花,Wang 王 Xijun 希俊,Wu 吴 Chen 晨
Abstract
Abstract
Particle
was first observed by the Belle experiment in the
invariant mass spectrum in the process
and subsequently confirmed by the BaBar experiment. Both experiments reported the resonant parameters of this particle in the processes
and
assuming
as an S-wave Breit-Wigner resonance. We performed a global fit to the distributions of invariant mass of
measured by the Belle and BaBar experiments and additionally incorporated the measurements reported by the LHCb experiment to extract the mass and width of
. We obtained
MeV/
and
MeV, which are consistent with the values from PDG within one standard deviation but with higher precision.
Funder
National Natural Science Foundation of China