Dielectron yields in p + d and p + p collisions at 4.9-GeV

Huang, H.Z. ; Beedoe, S. ; Bougteb, M. ; et al.
Phys.Lett.B 297 (1992) 233-237, 1992.
Inspire Record 338830 DOI 10.17182/hepdata.28996

The dielectron yield in p + d and p + p collisions at a beam kinetic energy of 4.9 GeV has been measured using the Dilepton Spectrometer (DLS) at the Bevalac. The measured ratio of the yield in p + d to that in p + p collisions, 1.92±0.06, is in disagreement with the assumptions of model calculations applied to our ealier p +Be data, where it was found that p + n bremsstrahlung dominated other sources. While the measured ratio is consistent with a hadron-like origin of the dielectrons, the contributions of known hadronic decays are smaller than the measured yield from p + p collissions.

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