2020/11/04 by A. Türkan, J. Y. Süngü, Türkan, A. +3 · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions
paper · pdf · doi:10.48550/arxiv.2011.02416
openalex publication_date 2020/11/04 · openalex created_date 2022/08/28 · openalex updated_date 2026/07/28
Since the low mass of D^*s0(2317) has still been a problem to the conventional quark model, one can consider other options regarding as multi-quark system. Therefore we investigate the scalar open-charm state D^*s0(2317) by Thermal QCD Sum Rules (TQCDSR) method using the two-point correlation function together with contributions of the non-perturbative condensates up to dimension six. Deriving and numerically analyzing thermal mass and pole residue sum rules, we accomplish the effects on the properties of D^*s0(2317) resonance in hot medium. Our numerical evaluations indicate that the variations in mass and pole residue values are stable through the growing temperature up to T≅100~MeV, but they begin to fall after this point. At critical temperature, the values of mass and pole residue change up to 91%, 70% of their values in vacuum in the molecular scenario and 91%, 69% in the diquark-antidiquark scenario. Our results does not give any definite information as to whether D^*s0(2317) resonance has molecular or diquark-antidiquark structure since they are very close to each other to differentiate them. Besides, we predict the hadronic parameters of the bottom partner of the D^*s0(2317) resonance in both molecular and diquark-antidiquark pictures. This bound state is worth investigating in future experiments. Also the detailed search of hot medium effects on the hadronic parameters of open-charm meson D^*s0(2317) and the bottom partner could have some implications to define the QCD phase diagram obtained from heavy-ion collision experiments. Moreover these results can be useful in distinguishing conventional quark model mesons from exotica.