Quasi-elastic pion-helium scattering at 5 GeV/c

Details Quasi-elastic pion-helium scattering at 5 GeV/c Quasi-elastic pion-helium scattering at 5 GeV/c

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980nupha.343..449c&link_type=abstract

Nuclear Physics A, Volume 343, p. 449-467.

Physics

Nuclear Physics

3

Nuclear Reactions

Scientific paper

We have measured the cross section for π- + 4He--> π- + 3H+p at 5 GeV/c incident pion momentum. The momentum transfer to the pion was in the region 0.005<=tππ<=0.15 (GeV/c)2 and the triton recoil momentum in the region 0.24 <= pt <= 0.60 GeV/c. A theoretical model including final-state interactions has also been developed. Strong final-state interactions prohibit a direct extraction of the relative proton-triton bound-state wave function. Nevertheless, we are able to conclude that the wave function remains positive for relative proton-triton momenta up to at least 0.6 GeV/c. This result questions the relevance of wave functions derived from the helium electromagnetic form factor.

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