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Radiative Neutron-Proton Capture in Effective Chiral Lagrangians | | Tae-Sun Park
; Dong-Pil Min
; Mannque Rho
; | | Date: |
16 Dec 1994 | | Journal: | Phys.Rev.Lett. 74 (1995) 4153-4156 | | Subject: | nucl-th hep-ph | | Abstract: | We calculate the cross-section for the thermal $n+p
ightarrow d+gamma$ process in chiral perturbation theory to next-to-next-to-leading order using heavy-fermion formalism. The exchange current correction is found to be $(4.5pm 0.3)~\%$ in amplitude and the chiral perturbation at one-loop order gives the cross section $sigma_{th}^{np}=(334pm 2) {mbox mb}$ which is in agreement with the experimental value $(334.2pm 0.5) {mbox mb}$. Together with the axial charge transitions, this provides a strong support for the power of chiral Lagrangians for nuclear physics. | | Source: | arXiv, nucl-th/9412025 | | Other source: | [GID 194171] pmid10058429 | | Services: | Forum | Review | PDF | Favorites | |
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