Mass and transverse momentum dependence of dielectron production in p + d and p + p collisions at 4.9-GeV

The DLS collaboration Huang, H.Z. ; Beedoe, S. ; Bougteb, M. ; et al.
Phys.Rev.C 49 (1994) 314-319, 1994.
Inspire Record 356615 DOI 10.17182/hepdata.38156

Dielectron production in p+d and p+p collisions at the beam kinetic energy of 4.9 GeV has been measured with the Dilepton Spectrometer. Features of the dielectron cross section have been studied with cuts on the mass and transverse momentum of the pairs. The spectra for several regions of phase space are presented as a function of the pair mass and transverse momentum.

8 data tables

Mass distribution.

Mass distribution.

Transverse momentum distribution.

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Dielectron measurements in p + p and p + d interactions from E (beam) = 1-GeV to 4.9-GeV

The DLS collaboration Wilson, W.K. ; Beedoe, S. ; Bougteb, M. ; et al.
Phys.Lett.B 316 (1993) 245-249, 1993.
Inspire Record 358344 DOI 10.17182/hepdata.28808

The beam energy and invariant mass dependence of the dielectron yield in p + d interactions relative to the yield in p + p interactions is presented for incident kinetic energies from 1.0–4.9 GeV. The ratio of the yield in p + d interactions to that in p + p interactions decreases from 10.5±1.6 at 1.0 GeV to 1.96±0.08 at 4.9 GeV for electron pairs with invariant masses ⩾ 0.15 GeV/ c 2 . The large ratio at 1.0 GeV suggests that dielectron production in the p + d system is dominated by a p + n process. The beam energy dependence of the ratio indicates that this p + n contribution decreases with respect to the other dielectron sources as the incident energy is increased.

7 data tables

No description provided.

No description provided.

No description provided.

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