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

¹ M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30348 Kraków, Poland
² Department of Physics, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan
³ Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany
⁴ JARA - High Performance Computing, Forschungszentrum Jülich, D-52425 Jülich, Germany
⁵ Department of Physics, University of Pisa, IT-56127 Pisa, Italy
⁶ INFN-Pisa, IT-56127 Pisa, Italy

^* e-mail: jacek.golak@uj.edu.pl

Published online: 1 February 2019

Abstract

We investigate the π^– + ²H → γ + n + n, π^– + ³He → γ + ³H, π^– + ³He → γ + n + d, π^– + ³He → γ + n + n + p and π^– + ³H → γ + n + n + n capture reactions using realistic two-nucleon and three-nucleon potentials and the single nucleon Kroll-Ruderman-type transition operator. We obtain predictions for the total capture rates for all these processes, calculating rigorously the initial and final nuclear states.