CLAS Physics Database

E89-027 CLAS experiment

Spokespersons
L. B. Weinstein, R. A. Niyazov
Year
1999
Abstract
We have measured the He3(eeppn) reaction at 2.2 GeV over a wide kinematic range. The kinetic energy distribution for 'fast' nucleons (p > 250 MeV/c) peaks where two nucleons each have 20% or less, and the third nucleon has most of the transferred energy. These fast pp and pn pairs are back-to-back with little momentum along the three-momentum transfer, indicating that they are spectators. We provide the cross section of Correlated Pair Relative and Total Momentum.
Comment
This is a part of E2A run experiment. Coincidence Reaction Studies with the CLAS.
Publication
  1. R. A. Niyazov, L. B. Weinstein, and CLAS Collaboration Two-Nucleon Momentum Distributions Measured in 3He(eeppn) // Phys. Rev.Lett. 92, 052303 (2004)
Quantities
dσ/dPrel,pn dσ/dPrel,pp dσ/dPtot,pn dσ/dPtot,pp

Measurements

ID Quantity Beam Target Final state Q2min,
GeV2
Q2max,
GeV2
Wmin,
GeV
Wmax,
GeV
E61M1 dσ/dPrel,pn e 3He ppN 0.5 1.0 0.95 1.05
E61M2 dσ/dPrel,pp e 3He ppN 0.5 1.0 0.95 1.05
E61M3 dσ/dPtot,pn e 3He ppN 0.5 1.0 0.95 1.05
E61M4 dσ/dPtot,pp e 3He ppN 0.5 1.0 0.95 1.05