Radiative pion capture in 2H, 3He and 3H

Abstract

The ${\pi }^{-}+{}^2\mathrm{H}\to \gamma +n+n$, ${\pi }^{-}+{}^3\mathrm{He}\to \gamma +{}^3\mathrm{H}$, ${\pi }^{-}+{}^3\mathrm{He}\to \gamma +n+d$, ${\pi }^{-}+{}^3\mathrm{He}\to \gamma +n+n+p$ and ${\pi }^{-}+{}^3\mathrm{H}\to \gamma +n+n+n$ capture reactions are studied with the AV18 two-nucleon potential and the Urbana~IX three-nucleon potential. We provide for the first time realistic predictions for the differential and total capture rates for all these processes, treating consistently the initial and final nuclear states. Our results are based on the single nucleon Kroll-Ruderman-type transition operator and concentrate on the full treatment of the nuclear final state interactions. They are compared with older theoretical predictions and experimental data.

arXiv comment23 pages, 13 eps figures

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• Quantum Monte Carlo calculations of nuclei with A \leq 7
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• Muon capture on deuteron and 3He
• Using chiral perturbation theory to extract the neutron-neutron scattering length from pi- d -> n n gamma
• Radiative pion capture by a nucleon
• Break-up channels in muon capture on 3He
• Radiative pion capture in nuclei: a continuum shell-model approach
• Momentum space treatment of inclusive neutrino scattering off the deuteron and trinucleons
• Muon capture on 3H
• Chiral O(Q^4) two-body operators for s-wave pion photoproduction on the NN system
• Deuteron disintegration in three dimensions

Cited by in corpus (4)

• Unnuclear physics
• Neutron-neutron scattering length from the ${}^6$He$(p,p\alpha )nn$ reaction
• Observability of modified threshold behavior near unitarity
• Pion absorption from the lowest atomic orbital in 2H, 3H and 3He