Perspectives of $e^+e^-$ production in pp, pd and p Be reactions at SIS energies

Details Perspectives of $e^+e^-$ production in pp, pd and p Be reactions at SIS energies Perspectives of $e^+e^-$ production in pp, pd and p Be reactions at SIS energies

2000-08-21

arxiv.org/abs/nucl-th/0008037v2

Nucl.Phys. A686 (2001) 568-588

Physics

Nuclear Physics

Nuclear Theory

27 pages, LaTeX, including 13 postscript figures, to be published in Nucl. Phys. A

Scientific paper

10.1016/S0375-9474(00)00557-1

We study dilepton production from pp, pd and p Be collisions from 1 - 5 GeV including the $\pi^0$, $\eta$, $\omega$ and $\Delta$ Dalitz decays, direct decays of vector mesons ($\rho$, $\omega$) as well as subthreshold $\rho$ production via baryonic resonances (e.g. $D_{13}(1520), P_{11}(1710)$). Our calculations compare rather well with the pp and pd data from the DLS Collaboration, however, overestimate slightly the 'old' p Be data from that group. Futhermore, detailed predictions for differential dilepton spectra at SIS energies are made with a high mass resolution that can be controlled experimentally by the HADES Collaboration in near future.

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