Impact of a thermal medium on newly observed Z_cs(3985) resonance and its b -partner

2020/11/25 by J. Y. Süngü, A. Türkan, Süngü, J. Y. +5
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2011.13013

openalex publication_date 2020/11/25 · openalex created_date 2022/09/29 · openalex updated_date 2026/07/28

Abstract

Motivated by the very recent discovery of the strange hidden-charm exotic state Z_cs(3985) by the BESIII Collaboration, we study possible interpretation of this exotic state both at T= 0 and T≠ 0 . We analytically compute the mass and meson-current coupling constant of this resonance with spin-parity J^PC = 1^+- at finite temperature approximation up to sixth order of the thermal operator dimension including non-perturbative contributions. Extracting thermal mass and meson-current coupling constant sum rules, the modifications on properties of Z_cs(3985) state in hot medium is determined. As a by product, the hadronic parameters of the bottom partner of Z_cs(3985) is estimated as well. Moreover the search of temperature effects on the hadronic parameters of hidden-charm meson Z_cs(3985) and the bottom partner make us understand the phase transitions, chiral symmetry breaking and the properties of hot-dense matter in QCD.

Related

• Explanation of the newly obseaved Z_cs^-(3985) as a D_s^(*)-D^(*)0 molecular state
• The Z_cs(3985)^- structure in a coupled-channels model
• The nature of charged charmonium-like states Z_c(3900) and its strange partner Z_cs(3982)
• Exploration of the hidden charm decays of Z_cs(3985)
• Interpreting Z(3900)