J/ψabsorption by nucleons in the meson-exchange model

Abstract

We reinvestigate the J /ψ dissociation processes induced by the reactions with nucleons, J /ψ+N →D ( * ) + c , in the meson-exchange model. Main constraints used in this work are vector-meson dominance and charm vector-current conservation. We show that the cross section for J /ψ + N →D + c can be larger than that for J /ψ + N →D * + c when these constraints are imposed. The dependence of the cross sections on the coupling constants is analyzed in detail, and the comparison with the recent quark-interchange model predictions is also made.

A QCD Sum Rules Calculation of the $J/\psi D_{s}^{*} D_{s}^{*}$ Form Factors and Strong Coupling Constants

“…Comparing with the result in (28), we can attribute a violation of about 20% and 17% in the SU (4) symmetry for the coupling constants in (30). Furthermore, the result is in excellent agreement with the one predicted VDM, g J/ψD * s D * s = 7.44 [21].…”

Strong three-body decays ofΛc(2940)+in a hadronic molecule picture

“…The Lagrangian L ρD * N Λ ′ c can be derived using the procedure suggested in Ref. [23]. In particular, we start with the non-minimal…”

Production of the charmed baryonΛc(2940)+at PANDA

“…In our calculation, we consider the production rates of à c ð2940Þ þ whose J P assignments are prior assumed. The following Lagrangians describe the interaction of à c ð2940Þ þ with D 0 p for different J P assignments to à c ð2940Þ þ [5,[19][20][21][22]:…”