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arXiv · hep-ph/9602293

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

Jae Kwan Kim·Pyungwon Ko·Kang Young Lee·Serge Rudaz
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Abstract

We consider the $a_{1} (1260)$ contribution to photon and dilepton productions from hot hadronic matter. The effective lagrangian with $π, ρ$ and $a_{1}$ discussed by Ko and Rudaz is employed, which successfully reproduces the $Γ(a_{1} \rightarrow πγ) = 670$ 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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Jae Kwan Kim, Pyungwon Ko, Kang Young Lee, Serge Rudaz. 1996-02-15. $a_1 (1260)$ contribution to photon and dilepton productions from hot hadronic matter : Revisited. https://doi.org/10.1103/physrevd.53.4787

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