title: Inclusive dielectron cross sections in p + p and p + d interactions at beam energies from 1.04 to 4.88 GeV.
abstract: Measurements of dielectron production in p + p and p + d collisions with beamkinetic 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.
authors.affiliation: Wayne State University, Detroit, Michigan 48201, USA.
authors.forename: W K
authors.initials: WK
authors.lastname: Wilson
authors.forename: S
authors.initials: S
authors.lastname: Beedoe
authors.forename: R
authors.initials: R
authors.lastname: Bossingham
authors.forename: M
authors.initials: M
authors.lastname: Bougteb
authors.forename: J
authors.initials: J
authors.lastname: Carroll
authors.forename: W G
authors.initials: WG
authors.lastname: Gong
authors.forename: T
authors.initials: T
authors.lastname: Hallman
authors.forename: L
authors.initials: L
authors.lastname: Heilbronn
authors.forename: H Z
authors.initials: HZ
authors.lastname: Huang
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authors.initials: G
authors.lastname: Igo
authors.forename: P
authors.initials: P
authors.lastname: Kirk
authors.forename: G
authors.initials: G
authors.lastname: Krebs
authors.forename: A
authors.initials: A
authors.lastname: Letessier-Selvon
authors.forename: L
authors.initials: L
authors.lastname: Madansky
authors.forename: F
authors.initials: F
authors.lastname: Manso
authors.forename: D
authors.initials: D
authors.lastname: Magestro
authors.forename: H S
authors.initials: HS
authors.lastname: Matis
authors.forename: J
authors.initials: J
authors.lastname: Miller
authors.forename: C
authors.initials: C
authors.lastname: Naudet
authors.forename: R J
authors.initials: RJ
authors.lastname: Porter
authors.forename: M
authors.initials: M
authors.lastname: Prunet
authors.forename: G
authors.initials: G
authors.lastname: Roche
authors.forename: L S
authors.initials: LS
authors.lastname: Schroeder
authors.forename: P
authors.initials: P
authors.lastname: Seidl
authors.forename: A
authors.initials: A
authors.lastname: Yegneswaran
mesh_terms: D004583:Electrons; D019471:Elementary Particle Interactions; D004601:Elementary Particles; D020450:Heavy Ions; D008651:Mesons; D009686:Nuclear Physics; D010315:Particle Accelerators; D012542:Scattering, Radiation; D013057:Spectrum Analysis