Final-state interactions in the high-energy proton-deuteron charge exchange reaction
B.S. AladashviliJoint Inst. for Nuclear Research, Dubna, USSRJ.-F. GermondJoint Inst. for Nuclear Research, Dubna, USSRВ. В. ГлаголевJoint Inst. for Nuclear Research, Dubna, USSRM. NioradzeJoint Inst. for Nuclear Research, Dubna, USSRT. SiemiarczukJoint Inst. for Nuclear Research, Dubna, USSRJ. SteṕaniakJoint Inst. for Nuclear Research, Dubna, USSRV. N. StreltsovJoint Inst. for Nuclear Research, Dubna, USSRC. WilkinJoint Inst. for Nuclear Research, Dubna, USSRP. ZielińskiJoint Inst. for Nuclear Research, Dubna, USSR
1977en
ABI
Abstract
The charge exchange channel of the proton-deuteron break-up reaction pd to npp at 1 GeV is studied in impulse approximation. The final-state interaction in the 1S0 state of the pp subsystem induces a slight asymmetry in the spectator proton angle and a threshold enhancement in the pp effective mass. The 20% of the observed events which have large effective mass may be explained quantitatively by the production of a Delta resonance which is de-excited through a final-state interaction with the spectator nucleon. It is concluded that almost all of the small-angle np charge exchange cross section at this energy involves nucleon spin-flip.
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