Baryonic contributions to the dilepton spectrum of nucleon-nucleon collisions

M. Zétényi, G. Wolf

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2 Citations (Scopus)


We study the production of dileptons in relativistic nucleon-nucleon collisions. Additionally, to the traditional dilepton production channels [vector meson decays, meson and [Formula Presented] Dalitz decays], we included in our model as new dilepton sources the Dalitz decay of higher unflavored baryon resonances with [Formula Presented] and [Formula Presented] The contributions of these new channels are estimated, using experimental information about the [Formula Presented] decays of the resonances and have large uncertainties. The obtained dilepton spectra are compared to the experimental data by the DiLepton Spectrometer (DLS, Lawrence Berkeley National Laboratory). Predictions for the High Acceptance Di-Electron Spectrometer (HADES) of the Heavy Ion Synchrotron SIS at GSI, Darmstadt are also discussed. In spite of the large uncertainties of the higher resonance Dalitz decay contributions, we are able to draw the conclusion that these contributions are negligible compared to the other dilepton sources and do not influence the detectability of the [Formula Presented] and [Formula Presented] vector meson peaks.

Original languageEnglish
Number of pages1
JournalPhysical Review C - Nuclear Physics
Issue number4
Publication statusPublished - Jan 1 2003

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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