Author/Authors :
E.A. Pasyuk، نويسنده , , R.L. Boudrie، نويسنده , , P.A.M. Gram، نويسنده , , C.L. Morris، نويسنده , , J.D. Zumbro، نويسنده , , J.L. Matthews، نويسنده , , Y. Tan، نويسنده , , V.V. Zelevinsky، نويسنده , , G. Glass، نويسنده , , B.J. Kriss، نويسنده ,
Abstract :
We have measured cross sections for the (π+,π±p) reactions on 3H, 4He, 6Li and 7Li in quasi-free kinematics at incident pion beam energy 500 MeV. An enhancement of the (π+,π−p) cross section in this kinematics is observed. If this is interpreted as due to quasi-free scattering from preexisting Δ components of the nuclear wave function, the extracted probabilities are in agreement with theoretical expectations.
