Elsevier

Physics Letters B

Volume 297, Issues 3–4, 31 December 1992, Pages 233-237
Physics Letters B

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

https://doi.org/10.1016/0370-2693(92)91254-7Get rights and content

Abstract

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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  • Cited by (17)

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    1

    Present address: Hampton University, Hampton, VA 23668, USA.

    2

    Present address: Beijing High Energy Institute, Beijing, China.

    3

    Present address: University of California at Los Angeles, Los Angeles, CA 90024, USA.

    4

    Present address: LPNHE, Université de Paris VI et VII, F-75252 Paris Cedex 05, France.

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