The repulsion in the S-wave pion-nucleus optical potential
H McManus; D O Riska; H McManus; Dept. of Phys., Michigan State Univ., East Lansing, MI, USA; D O Riska; Dept. of Phys., Michigan State Univ., East Lansing, MI, USA
Журнал:
Journal of Physics G: Nuclear Physics
Дата:
1981-07-01
Аннотация:
It is shown that the medium enhancement of the second-order correction to the real part of the S-wave pion-nucleus optical potential can explain most of the repulsion needed in fits of the level shifts in pionic atoms. The dispersive part of the absorptive contribution is of far smaller significance.
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