Heavy vector and axial-vector mesons in hot and dense asymmetric strange hadronic matter

Abstract

We observed the impact of finite magnetic field on the in-medium mass and decay constant of isospin averaged vector D * (D * + , D * 0 ) and axial-vector D 1 (D + 1 , D 0 1 ) mesons. The quark and gluon condensates of the nuclear medium at finite magnetic field, temperature, isospin asymmetry, and density have been obtained by the meson exchange scalar fields within the chiral SU(3) model.The medium attributes modify the scalar and vector density of nuclear medium and this variation reflects in the in-medium mass and decay constant of spin 1 D mesons. We calculate these observables by comparing the Operator Product Expansion (OPE) and the phenomenological side in the QCD Sum Rules. In the results, we observed a positive mass shift for charged vector and axial-vector D mesons with respect to magnetic field. For neutral vector (axial-vector) D mesons we observed negative (positive) mass shift as a function of magnetic field. In the application part, we calculate the in-medium partial decay width of the process D * s (2715/2860) → D * K by using 3 P 0 model. The in-medium effects are incorporated through the in-medium masses of

In-medium pseudoscalar D/B mesons and charmonium decay width

“…We have successfully used above idea to calculate the temperature dependence of the masses and decay constants of vector and axial-vector D and B mesons [36]. The temperature dependence of the optical potentials of kaons, D and B mesons have been calculated using the scalar fields σ, ζ, δ and dilaton field χ in [57,60].…”

“…(1) to (3). Also, <qg s σGq > ρ B and <qiD 0 iD 0 q > ρ B can be approximated in terms of < qq > ρ B [36,37]. We differentiate eq.…”

“…This Lagrangian density can be solved by using mean field approximation under which only the scalar and vector fields contribute to the baryon meson interactions and for all other mesons the expectation values become zero [38,56]. From the Lagrangian density, using Euler Lagrange equation of motion, we obtain coupled equations of motion for the scalar fields σ, ζ, δ and scalar dilaton field χ [36]. We solve these coupled equations of motion using mean field approximation for the different value of strangness fractions f s , isospin asymmetric parameter I, temperature T , and, density ρ B of the medium.…”

“…Within QCD sum rules, the in-medium properties of heavy mesons are expressed in terms of quark and gluon condensates and in-medium modification of these condensates lead to medium modification of the properties of heavy meson. In [36,37], using QCD sum rules and chiral SU(3) model [38], we investigated the properties of scalar, vector and axial-vector D and B mesons at finite density and temperature of the hadronic matter. The medium modified values of quark and gluon condensates were calculated using chiral effective SU(3) model and these were further used as input in the QCD sum rules to evaluate the properties of D and B mesons.…”

In-medium properties of pseudoscalar $$D_s$$ D s and $$B_s$$ B s mesons

“…Using the linear density approximate QCD sum rules, the authors separated the even and odd terms of the correlation function to evaluate the mass splitting between D andD mesons, as well as between D s andD s mesons [36]. In [37] using QCD sum rules and chiral SU(3) model, we evaluated the in-medium masses and decay constants of vector and axial vector D 1 and B 1 mesons, and observed repulsive interaction for axial vector whereas, attractive interaction for vector D * and B * mesons in hadronic medium [37]. Recently, in Ref.…”