We perform a full amplitude analysis of the process eþe- ? J=?DD¯ , where D refers to either D0 or Dþ.
A new charmoniumlike state Xð3860Þ that decays to DD¯ is observed with a significance of 6.5s. Its mass is ð3862þ26-32 þ40 -13Þ MeV=c2, and its width is ð201
þ154-67 þ88-82 Þ MeV. The JPC ¼ 0þþ hypothesis is favored over the 2þþ hypothesis at the level of 2.5s.
Revised: July 31, 2017 |
Published: June 16, 2017
Citation
Chilikin K., I. Adachi, H. Aihara, S. Al Said, D.M. Asner, V. Aulchenko, and R. Ayad, et al. 2017.Observation of an alternative ? c0ð2(P) candidate in e + e - ? J/?DD.Physical Review D 95, no. 11:Article No. 112003.PNNL-SA-127663.doi:10.1103/PhysRevD.95.112003