TY - JOUR
AB - In the limit of a high temperature T and a large quark-mass M, implying a small gauge coupling g, the heavy quark contribution to the spectral function of the electromagnetic current call be computed systematically in the weak-coupling expansion. We argue that the scale hierarchy relevant for addressing the disappearance ("melting") of the resonance peak front the spectral function reads M >> T > g(2)M > gT >> g(4)M, and review flow the heavy scales can be integrated out one-by-one, to construct a set of effective field theories describing the low-energy dynamics. The parametric behaviour of the melting temperature in the weak-coupling limit is specified.
AU - Laine, Mikko
ID - 1634288
IS - 1-4
JF - NUCLEAR PHYSICS A
KW - Thermal field theory
KW - Bottom
KW - mesons
KW - Perturbative QCD
KW - Quark-gluon plasma
SN - 0375-9474
TI - How to compute the thermal quarkonium spectral function from first principles?
VL - 820
ER -