The status of the hidden beauty state Yb is not clear up to now. The deviations from the expected behavior can provide a clue to consider it as an exotic meson candidate. Assuming the Yb resonance as a tetraquark, we estimated its mass and pole residue, both at vacuum and T ≠ 0 temperatures by calculating hot-medium contributions to hadronic parameters in the framework of Thermal QCD sum rules. Our results depict that the mass and pole residue values decrease dramatically at the vicinity of a critical temperature. Comparison of our results with the recent experimental data and theoretical results might be helpful in understanding the internal structure of bottomonium-like Yb state.
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Research Article| February 26 2019
Mass and pole residue of Yb(10890) state with JPC = 1−− at finite temperature
J. Y. Süngü;
AIP Conf. Proc. 2075, 080012 (2019)
J. Y. Süngü, A. Türkan, H. Dağ, E. Veli Veliev; Mass and pole residue of Yb(10890) state with JPC = 1−− at finite temperature. AIP Conf. Proc. 26 February 2019; 2075 (1): 080012. https://doi.org/10.1063/1.5091213
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