Two-pion exchange contributions to nuclear charge asymmetry

Journal Article · Fri Mar 01 04:00:00 EST 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.53.1154· OSTI ID:279115

Coon, S A ^[1]; Niskanen, J A ^[2]

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1. Physics Department, New Mexico State University, Las Cruces, New Mexico 88003 (United States)
2. Department of Physics, P. O. Box 9, FIN-00014 University of Helsinki (Finland)

In a nonrelativistic formalism we derive a charge-symmetry-breaking (CSB) two-pion exchange interaction {ital V}{sub {ital nn}}(2{pi}){minus}{ital V}{sub {ital pp}}(2{pi}), which includes both CSB vertex corrections and the CSB effect of propagators arising from the mass differences of the intermediate baryons in different charge states. While the former are small, the latter gives a contribution of the sign and scale comparable to the experimental difference in the effective range parameters and the binding energy difference between {sup 3}H and {sup 3}He. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 279115
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 53; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ASYMMETRY
ATOMIC NUMBER
BINDING ENERGY
CORRECTIONS
HELIUM 3
MASS DIFFERENCE
OPE MODEL
PROPAGATOR
TRITONS
VERTEX FUNCTIONS