Speaker
Chunjiang Shi
(Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China)
Description
We study the $S$-wave $D\bar{D}^*(I=0)$ scattering at four different pion masses $m_\pi$ ranging from 250 MeV to 417 MeV from $N_f=2$ lattice QCD. There exists a state below $D\bar{D}^*$ threshold, which can be related to $X(3872)$ and can be either a bound state or a virtual state up to the analysis strategies applied. This observation is likely unaffected by the possible left-hand cut effect of the one pion exchange interaction. On the other hand, different analysis procedures of the finite volume energies give the same hint at the existence of a $1^{++}$ resonance below 4.0 GeV.
Primary authors
Chunjiang Shi
(Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P.R. China)
Ying Chen
(Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China})
Mr
Haozheng Li
(School of Physics and Technology, Wuhan University, Wuhan 430072, People's Republic of China)
