TY - JOUR
T1 - The three-body force, off-shell πN scattering and binding energies in nuclear matter
AU - Coon, Sidney A.
AU - Scadron, Michael D.
AU - Barrett, Bruce R.
PY - 1975/5/5
Y1 - 1975/5/5
N2 - We re-examine the off-shell πN amplitude occurring in the two-pion exchange three-body force, subject to all of the constraints of current algebra. This amplitude is not dominated by the Δ(1231) isobar; instead, if the σ-term is known, it can be determined from on-shell scattering. The resulting contribution to the binding energy of nuclear matter is small but attractive, varying from 0.2 MeV to 1.5 MeV, corresponding to πN σ-terms of 70 MeV to 40 MeV.
AB - We re-examine the off-shell πN amplitude occurring in the two-pion exchange three-body force, subject to all of the constraints of current algebra. This amplitude is not dominated by the Δ(1231) isobar; instead, if the σ-term is known, it can be determined from on-shell scattering. The resulting contribution to the binding energy of nuclear matter is small but attractive, varying from 0.2 MeV to 1.5 MeV, corresponding to πN σ-terms of 70 MeV to 40 MeV.
UR - http://www.scopus.com/inward/record.url?scp=0000925824&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000925824&partnerID=8YFLogxK
U2 - 10.1016/0375-9474(75)90109-8
DO - 10.1016/0375-9474(75)90109-8
M3 - Article
AN - SCOPUS:0000925824
SN - 0375-9474
VL - 242
SP - 467
EP - 480
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
IS - 3
ER -