S-wave single heavy baryons with spin-3/2 at finite temperature

Abstract

The thermal behavior of the spectroscopic parameters of the S-wave single heavy baryons * Q , * Q and * Q with spin-3/2 are investigated in QCD at finite temperature. We analyze the variations of the mass and residue of these baryons taking into consideration the contributions of QCD thermal condensates up to dimension eight in Wilson expansion. At finite temperature, due to the breakdown of the Lorentz invariance by the choice of reference frame and presence of an extra O(3) symmetry, some new four-dimensional operators come out in the form of the fermionic and gluonic parts of the energy momentum tensor that are taken into account in the calculations. Our analyses show that at lower temperatures, the parameters of baryons under consideration are not affected by the medium. These parameters, however, show rapid variations with respect to temperature at higher temperatures near to a pseudo-critical temperature, after which the baryons are melted. The results of the masses and residues at T → 0 limit are compatible with the available experimental data and predictions of other theoretical studies.

Decay of the Higgs Boson \(h\to \tau ^- \tau ^+\to \pi ^-\nu _{\tau }\pi ^+{\bar \nu }_\tau \) for a Non-Hermitian Yukawa Interaction

“…Meanwhile the fit function is valid up to a temperature of T = 180 MeV [54] and 0|qq|0 represents the condensate of light quarks at vacuum. The gluonic and fermionic pieces of the energy density can be parametrized as in Ref.…”

Modifications on the Properties of \(D^*_{s0}\)(2317) as Four-quark State in Thermal Medium

“…The gluonic and fermionic pieces of the energy density can be parametrized as in Ref. [54] using the Lattice QCD data presented in Ref. [55] u µ θ f µν u ν T = 0.009 e 24.876T + 0.024 T 4 , u µ θ g µν u ν T = 0.091 e 21.277T − 0.731…”

“…where the vacuum subtracted values of the considered quantities are used as δf (T ) ≡ f (T )−f (0) and δT µ µ (T ) = ε(T )−3p(T ): ε(T ) is the energy density and p(T ) is the pressure. Taking into account the recent Lattice calculations [55,56], we get the fit function of δT µ µ (T ) as [54] δT µ µ (T ) T 4 = 0.020 e 29.412T + 0.115 .…”

Axial-tensor Meson family at $$T\ne 0$$

“…[39] the temperature dependence of quark condensates are presented up to temperature T = 300 MeV. However we parameterize them up to the T c = 165 MeV, which is treated as the pseudocritical temperature for the crossover phase transition at zero chemical potential [40]. Then the fermionic part of the energy density is parameterized as [41]…”