Analysis of pseudoscalar and scalar D mesons and charmonium decay width in hot magnetized asymmetric nuclear matter

摘要

In this paper, we calculate the mass shift and decay constant of isospin-averaged pseudoscalar (D+, D-0) and scalar (D-0(+), D-0(0)) mesons by the magnetic-field-induced quark and gluon condensates at finite density and temperature of asymmetric nuclear matter. We have calculated the in-medium chiral condensates from the chiral SU(3) mean-field model and subsequently used these condensates in QCD sum rules to calculate the effective mass and decay constant of D mesons. Consideration of external magnetic-field effects in hot and dense nuclear matter lead to appreciable modification in the masses and decay constants of D mesons. Furthermore, we also studied the effective decay width of higher charmonium states [psi (3686), psi(3770), chi(c0) (3414), chi(c2) (3556)] as a by-product by using the P-3(0) model, which can have an important impact on the yield of J/psi mesons. The results of the present work will be helpful to understand the experimental observables of heavy-ion colliders which aim to produce matter at finite density and moderate temperature.