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Home > Advances in High Energy Physics (Hindawi) > Hidden-Beauty Broad Resonance <math id="M1" xmlns="http://www.w3.org/1998/Math/MathML"><msub><mrow><mi>Y</mi></mrow><mrow><mi>b</mi></mrow></msub><mo stretchy="false">(</mo><mn fontstyle="italic">10890</mn><mo stretchy="false">)</mo></math> 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 $({T}_{c}\simeq \mathrm{190}\hspace{0.17em}\hspace{0.17em}\mathrm{M}\mathrm{e}\mathrm{V})$ , 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