Impact-Parameter Dependence of Multiple Lepton-pair Production from Electromagnetic Fields
摘要
In relativistic heavy-ion collisions, the strong Lorentz-contracted electromagnetic fields are capable of producing copious numbers of lepton pairs through the two-photon mechanism. Monte Carlo techniques have been developed that allow the exact calculation of production by this mechanism when a semi-classical approximation is made to the motion of the two ions. Here, we develop a hybrid Monte Carlo technique that enables us to calculate the impact parameter dependence of the two-photon mechanism for lepton-pair production, and by using this result, we obtain the probability distribution for multiple-pair production as a function of impact parameter. Computations are performed for SAu and PbPb systems at 200 A GeV and 160 A GeV, respectively. We also compare our results with the equivalent photon approximation and elucidate the differences.
引用
@article{arxiv.nucl-th/9410044,
title = {Impact-Parameter Dependence of Multiple Lepton-pair Production from Electromagnetic Fields},
author = {M. C. Guclu and J. C. Wells and A. S. Umar and M. R. Strayer and D. J. Ernst},
journal= {arXiv preprint arXiv:nucl-th/9410044},
year = {2009}
}
备注
16 pages