TY - JOUR
T1 - Higher-order field effects in pion absorption on two nucleons
AU - Kälbermann, G.
AU - Eisenberg, J. M.
PY - 1983
Y1 - 1983
N2 - We estimate the importance of rescattering diagrams involving intrinsically third-order effects in the pionic field for the process of pion absorption at rest on a pair of nucleons. The calculation is performed using a chiral bag model adapted for the correct description of higher-order pionic effects. The model provides the form factors needed in order to achieve a convergent result. The third-order diagrams cancel in part; nevertheless, the net result is as important as the conventional second-order s-wave rescattering mechanism for reasonable bag radii R1 fm and becomes dominant for bag radii R20.7 fm for internucleon distances less than about 2 fm. NUCLEAR REACTIONS (,2N), pion absorption, chiral bag models.
AB - We estimate the importance of rescattering diagrams involving intrinsically third-order effects in the pionic field for the process of pion absorption at rest on a pair of nucleons. The calculation is performed using a chiral bag model adapted for the correct description of higher-order pionic effects. The model provides the form factors needed in order to achieve a convergent result. The third-order diagrams cancel in part; nevertheless, the net result is as important as the conventional second-order s-wave rescattering mechanism for reasonable bag radii R1 fm and becomes dominant for bag radii R20.7 fm for internucleon distances less than about 2 fm. NUCLEAR REACTIONS (,2N), pion absorption, chiral bag models.
UR - http://www.scopus.com/inward/record.url?scp=35949023425&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.28.1318
DO - 10.1103/PhysRevC.28.1318
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AN - SCOPUS:35949023425
SN - 0556-2813
VL - 28
SP - 1318
EP - 1323
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 3
ER -