# Hidden-Beauty Broad Resonance ${Y}_{b}\left(10890\right)$ 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 ${Y}_{b}$ is studied by using QCD sum rules approach at finite temperature. Resonance ${Y}_{b}$ 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 ${m}_{{Y}_{b}}$ and the pole residue ${\lambda }_{{Y}_{b}}$ are investigated. It is seen that near a critical temperature $\left({T}_{c}\simeq \mathrm{190} \mathrm{M}\mathrm{e}\mathrm{V}\right)$ , the values of ${m}_{{Y}_{b}}$ and ${\lambda }_{{Y}_{b}}$ 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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