Decay constants of heavy vector mesons at finite temperature

This study deals with determination of the decay constants of heavy vector mesons in the framework of the thermal QCD sum rules. We calculate both thermal spectral density and non-perturbative contributions taking into account the traditionally existing operators at T 0 and also additional operators...

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Veröffentlicht in:Journal of physics. Conference series 2012-01, Vol.347 (1), p.12034-5
Hauptverfasser: Veliev, E Veli, Azizi, K, Sundu, H, Kaya, G, Türkan, A
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container_title Journal of physics. Conference series
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creator Veliev, E Veli
Azizi, K
Sundu, H
Kaya, G
Türkan, A
description This study deals with determination of the decay constants of heavy vector mesons in the framework of the thermal QCD sum rules. We calculate both thermal spectral density and non-perturbative contributions taking into account the traditionally existing operators at T 0 and also additional operators appearing at finite temperature. Analysis of the obtained thermal sum rules shows that the decay constants almost remain unchanged with respect to the variation of temperature up to T ≅ 100 MeV, however after this point, they start to decrease sharply with increasing temperature.
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subjects Constants
Decay
Decay rate
Density
Mathematical analysis
Operators
Physics
Spectra
Sum rules
Vector mesons
title Decay constants of heavy vector mesons at finite temperature
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