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arXiv · 1310.6124

Temporal mesonic correlators at NLO for any quark mass

Y. Burnier·M. Laine
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Abstract

We present NLO results for thermal imaginary-time correlators in the vector and scalar channels as a function of the quark mass. The range of quark masses for which a non-relativistic approximation works in the temperature range considered is estimated, and charm quarks turn out to be a borderline case. Comparing with simulation data from fine lattices, we find good agreement in the vector channel but a substantial discrepancy in the scalar one. An explanation for the discrepancy is suggested in terms of physics of the quark-antiquark threshold region. Perturbative predictions for the bottom scalar spectral function around the threshold are also briefly reviewed.

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Y. Burnier, M. Laine. 2013-10-23. Temporal mesonic correlators at NLO for any quark mass. https://arxiv.org/abs/1310.6124

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