Pion Absorption in Helium with the LADS Detector

Abstract

Investigations on π-absorption on Helium reveal a substantial part of the absorption cross section to be multi-nucleon absorption. A careful search for different reaction mechanisms shows clear signatures of initial state interaction, whereas most of the multi-nucleon absorption follows a phase space like distribution. In comparable conditions the signatures look alike for either ³He and ⁴He. Fits of Monte Carlo simulations to the data give first results on the partial cross sections in ³He.

Complete list see e.g. [1]