Interpolation of hard and soft dilepton rates - INSPIRE

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Interpolation of hard and soft dilepton rates

I. Ghisoiu
(
- Bern U.
)
,
M. Laine
(
- Bern U.
)

Jul 30, 2014

16 pages

Published in:

JHEP 10 (2014) 083

Published: Oct 14, 2014

e-Print:

1407.7955 [hep-ph]

DOI:

10.1007/JHEP10(2014)083

View in:

ADS Abstract Service

reference search54 citations

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Abstract: (Springer)

Strict next-to-leading order (NLO) results for the dilepton production rate from a QCD plasma at temperatures above a few hundred MeV suffer from a breakdown of the loop expansion in the regime of soft invariant masses M

^{2}

≪ (πT)

^{2}

. In this regime an LPM resummation is needed for obtaining the correct leading-order result. We show how to construct an interpolation between the hard NLO and the leading-order LPM expression, which is theoretically consistent in both regimes and free from double counting. The final numerical results are presented in a tabulated form, suitable for insertion into hydrodynamical codes.

Note:

16 pages. v2: wordings clarified

Thermal Field Theory
Quark-Gluon Plasma
Resummation
dilepton: production
production: thermal
quantum chromodynamics: plasma
quantum chromodynamics: correction
correction: higher-order
higher-order: 1
quantum chromodynamics: finite temperature

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Figures(5)

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