Isoscalar-Isovector Interferences in pN®N e+ e- Reactions as a Probe of Baryon Resonance Dynamics


Isoscalar-Isovector Interferences in pN®N e+ e- Reactions as a Probe of Baryon Resonance Dynamics

Titov, A. I.; Kämpfer, B.

The isoscalar-isovector (r-w) interferences in the exclusive reactions
p - p ® ne +e-
and
p + n ® pe + e -
near the w threshold leads to a distinct difference of the dielectron invariant
mass distributions depending on beam energy.
The strength of this effect is determined by the coupling of resonances to the nucleon
vector-meson channels and other resonance properties. Therefore, a combined analysis of the
se reactions can be usedas a tool for determining the baryon resonance dynamics.

  • Eur. Phys. J. A 12 (2001) 217-229

Permalink: https://www.hzdr.de/publications/Publ-4700
Publ.-Id: 4700