Heavy dileptons from nonequilibrium QGP

Details Heavy dileptons from nonequilibrium QGP Heavy dileptons from nonequilibrium QGP

1993-06-14

arxiv.org/abs/hep-ph/9306273v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, Preprint SUNY-NTG-93-20

Scientific paper

The rate of emission of heavy dileptons from QGP is found without an assumption of its complete thermal equilibrium. We base on the real-time quantum field kinetic approach [1] and use the expansion up to the second order with respect to strong coupling constant $g$. The final answer is not free from the collinear singularities and we show that this is the actual issue. As a result the main contribution to the rate of the heavy dileptons production at $M/T \sim 10$ comes from the process $q\bar{q}g\rightarrow \gamma^{*}$. ( Figures can be obtained from the author )

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