Hidden-Beauty Broad Resonance Yb(10890) in Thermal QCD

Süngü, J. Y.  (Department of Physics, Kocaeli University, 41380 Izmit, Turkey) ; Türkan, A. (Özyeğin University, Department of Natural and Mathematical Sciences, Çekmeköy, Istanbul, Turkey) ; Dağ, H. (Özyeğin University, Department of Natural and Mathematical Sciences, Çekmeköy, Istanbul, Turkey) (Physik Department, Technische Universität München, D-85747 Garching, Germany) ; Veliev, E. Veli (Department of Physics, Kocaeli University, 41380 Izmit, Turkey) (Faculty of Education, Kocaeli University, 41380 Izmit, Turkey)

18 June 2019

Abstract: In this work, the mass and pole residue of resonance Yb is studied by using QCD sum rules approach at finite temperature. Resonance Yb is described by a diquark-antidiquark tetraquark current, and contributions to operator product expansion are calculated by including QCD condensates up to dimension six. Temperature dependencies of the mass mYb and the pole residue λYb are investigated. It is seen that near a critical temperature (Tc190MeV) , the values of mYb and λYb decrease to 87% and to 44% of their values at vacuum.


Published in: Advances in High Energy Physics 2019 (2019) 8091865
Published by: Hindawi
DOI: 10.1155/2019/8091865
arXiv: 1809.07213
License: CC-BY-3.0



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