Phys.Rev.Lett. 57, 3152 (1986)

E.R.Kinney, J.L.Matthews, P.A.M.Gram, D.W.MacArthur, E.Piasetzky, G.A.Rebka, Jr., D.A.Roberts

Inclusive Pion Double Charge Exchange in ⁴He

NUCLEAR REACTIONS ⁴He(π⁺, π^-), (π^-, π⁺), E=120, 150, 180, 240, 270 MeV; measured σ(E(π), θ(π)); deduced reaction mechanism. Liquid helium target, double focusing spectrometer.

doi: 10.1103/PhysRevLett.57.3152