$a_1 (1260)$ contribution to photon and dilepton productions from hot hadronic matter : Revisited

Details $a_1 (1260)$ contribution to photon and dilepton productions from hot hadronic matter : Revisited $a_1 (1260)$ contribution to photon and dilepton productions from hot hadronic matter : Revisited

1996-02-15

arxiv.org/abs/hep-ph/9602293v1

Phys.Rev. D53 (1996) 4787-4792

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, ReVTex, 4 eps figure files(uuencoded in seperate file), to appear in Physical Review D

Scientific paper

10.1103/PhysRevD.53.4787

We consider the $a_{1} (1260)$ contribution to photon and dilepton productions from hot hadronic matter. The effective lagrangian with $\pi, \rho$ and $a_{1}$ discussed by Ko and Rudaz is employed, which successfully reproduces the $\Gamma (a_{1} \rightarrow \pi \gamma) = 670$ keV. Our results for the photon production rate are comparable to those obtained by Xiong {\it et al.}, while the dilepton production rates come out smaller than those obtained by Gale {\it et al.} by an order of magnitude.

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