Conveners
Parallel Session I (2)：Hadron and Flavor Physics
- Wenbin QIAN (University of Chinese Academy of Sciences)
我们将报告LHCb实验在奇特强子态产生测量方面的结果。
A near-threshold peaking structure, dubbed X(3960), is observed in the Ds+Ds- mass spectrum with significance greater than 12 standard deviations, using proton-proton collision data collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV. Its quantum numbers is measured to be J^{PC}=0^{++} with the amplitude analysis. It may be a candidate with the quark content: c cbar...
The first discovery of pentaquarks at LHCb in 2015, opens new window to study QCD. The LHCb experiment has the large dataset and excellent detector performance in such searches. In this talk, the latest results on pentaquark study in B-meson decays from LHCb will be discussed.
We calculate the s-wave scattering length in the $0^+$ sector of $\eta_c\eta_c$ and the $2^+$ sector of $J/\psi J/\psi$ using three $N_f=2$ twisted mass gauge ensembles
with the lattice spacing $a=0.0667,0.085,0.098$ fm, respectively.
The scattering lengths are extracted using the conventional L{\"u}scher finite size method. We observe significant discretization effects and therefore...
