Inclusive dielectron cross sections in p+p and p+d interactions at beam energies from 1.04 to 4.88 GeV
- Wayne State University, Detroit, Michigan48201 (United States)
- University of California at Los Angeles, Los Angeles, California90024 (United States)
- Lawrence Berkeley National Laboratory, University of California, Berkeley, California94720 (United States)
- Universite Blaise Pascal/IN2P3, 63177Aubiere Cedex (France)
- The Johns Hopkins University, Baltimore, Maryland21218 (United States)
- Louisiana State University, Baton Rouge, Louisiana70803 (United States)
Measurements of dielectron production in p+p and p+d collisions with beam kinetic energies from 1.04 to 4.88 GeV are presented. The differential cross section is presented as a function of invariant pair mass, transverse momentum, and rapidity. The shapes of the mass spectra and their evolution with beam energy provide information about the relative importance of the various dielectron production mechanisms in this energy regime. The p+d to p+p ratio of the dielectron yield is also presented as a function of invariant pair mass, transverse momentum, and rapidity. The shapes of the transverse momentum and rapidity spectra from the p+d and p+p systems are found to be similar to one another for each of the beam energies studied. The beam energy dependence of the integrated cross sections is also presented. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 627568
- Journal Information:
- Physical Review, C, Vol. 57, Issue 4; Other Information: PBD: Apr 1998
- Country of Publication:
- United States
- Language:
- English
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