Measurement of the effect of photon screening in a deuteron in the pion double charge exchange reaction
Abramov B.M., Dukhovskoi I.A., Kishkurno V.V., Kondratyuk L.A., Krutenkova A.P., Kulikov V.V., Radkevich I.A., Fedorets V.S.
A method for experimentally determining the correction δρ for the screening of the proton in a deuteron in the reaction π d—>π+Χ (π+ forward) is proposed and realized. The method is based on comparing the cross section of this reaction with the cross section of the reaction π~ρ—>π+Χ in the missing-mass region Мгх< 1.48 GeV2, which lies below the threshold of the π~η—>π+Χ reaction. The value dp =0.20±0.10 determined in this manner agrees with that calculated on the basis of the diffraction theory of multiple scattering.