A Consistent Meson-Field-Theoretical Description of PP-Bremsstrahlung
| dc.creator | Eden, J. A. | |
| dc.creator | Gari, M. F. | |
| dc.date | 1995-06-02 | |
| dc.date | 1996-03-12 | |
| dc.date.accessioned | 2026-07-07T11:15:22Z | |
| dc.date.available | 2026-07-07T11:15:22Z | |
| dc.description | A parameter-free and relativistic extension of the RuhrPot meson-baryon model is used to define the dominant isoscalar meson-exchange currents. We compute pp-bremsstrahlung observables below the $π-$production threshold using a relativistic hadronic current density that includes impulse, wave function re-orthonormalization, meson-recoil, $\bar{\rm N}$N creation and annihilation, $ρπγ$ + $ωπγ$ + $ρηγ$ + $ωηγ$ vector-meson decay and N$Δγ(π,ρ)$ exchange currents. We obtain a good description of the available data. The N$Δγ(π)$ current is shown to dominate the large two-body contributions and closed-form expressions for various non-relativistic approximations are analyzed. An experimental sensitivity to the admixture of pseudo-scalar and pseudo-vector admixture of the NN$π$ interaction is demonstrated. We examine the Lorentz invariance of the NN$\rightleftharpoons$NN $t$-matrices and show a dominantly pseudo-vector NN$π$ coupling renders impulse approximation calculations without boost operators to be essentially exact. Conversely, a similar analysis of the $Δ{\rm N}\rightleftharpoons$NN transitions shows that boost operators and the two-body $NΔγ$ wave function re-orthonormalization meson-recoil currents are required in NN, $Δ$N and $ΔΔ$ coupled channel $t$-matrix applications. The need for additional data is stressed. | |
| dc.description | 34 pages of uuencoded REVTeX using multicol.sty with 21 figures inlined using epsf.sty. This revision adds section IV.H | |
| dc.identifier | https://arxiv.org/abs/nucl-th/9506001 | |
| dc.identifier | http://arxiv.org/abs/nucl-th/9506001 | |
| dc.identifier | Phys.Rev.C53:1102-1131,1996 | |
| dc.identifier | doi:10.1103/PhysRevC.53.1102 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/192366 | |
| dc.subject | Nuclear Theory | |
| dc.title | A Consistent Meson-Field-Theoretical Description of PP-Bremsstrahlung | |
| dc.type | text |