The J/psiDD* vertex

Coupling constants of D*DsK and Ds*DK processes

“…We have been working on the problem of computing coupling constants for others processes and have a consistent method for this [6][7][8][9][10][11][12][13][14]. Following the QCDSR formalism described in our previous works [6][7][8][9][10][11][12][13][14], we write the three-point correlation function associated with the D * D s K vertex, which is given by…”

“…Following the QCDSR formalism described in our previous works [6][7][8][9][10][11][12][13][14], we write the three-point correlation function associated with the D * D s K vertex, which is given by…”

Isospin violating decay ofψ(3770)→J/ψ+π0

“…As an illustration, we show in Fig. 5 the form factor F ψDD * (p [29]. The ratios of the pole contribution versus the whole dispersion integral are also depicted in Fig.…”

“…QSSR reanalysis of the form factor FψDD * (p Since the mass of J/ψ is below the lowest threshold of open charm DD, it is not possible to measure the form factor F ψDD * (p 2 5 ) in experiment directly. There has been a systematic investigation of the charmonium to open charmed meson form factors in the framework of QSSR [29,30]. As a crucial criterion of QSSR, the pole contribution should take a dominant part in the dispersion integral.…”

“…To obtain more concrete information about the form factor, we consider a large virtuality interval 0 ≤ −p 2 5 ≤ 5 GeV 2 , which is the same as in Ref. [29]. As an illustration, we show in Fig.…”