Nuclear Matrix Elements of Axial-Charge Exchange Currents Derived in Heavy-Fermion Chiral Perturbation Theory

Details Nuclear Matrix Elements of Axial-Charge Exchange Currents Derived in Heavy-Fermion Chiral Perturbation Theory Nuclear Matrix Elements of Axial-Charge Exchange Currents Derived in Heavy-Fermion Chiral Perturbation Theory

1994-04-13

arxiv.org/abs/nucl-th/9404015v1

Nucl.Phys. A579 (1994) 381-397

Physics

Nuclear Physics

Nuclear Theory

19 pages, LaTeX, SNUTP 94-29, USC(NT)-94-2

Scientific paper

10.1016/0375-9474(94)90914-8

We calculate shell-model matrix elements of the axial-charge exchange current operators that have been obtained up to the next-to-leading order from heavy-fermion chiral perturbation theory. It is found that loop corrections to the soft one-pion-exchange contribution are small (around 10 \%) and have no significant dependence on the nuclear mass number or on the valence-nucleon orbits. These results render further support to the chiral-filtering conjecture.

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