1995/05/12 by Tae-Sun Park, Dong-Pil Min, Mannque Rho · 166 citations
Earth and Planetary Sciences · Physics and Astronomy · #Amplitude #Chiral perturbation theory #Cold Fusion and Nuclear Reactions #Formalism (music) #Lagrangian #Nuclear matter #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #Thermal #hep-ph #nucl-th
paper · pdf · doi:10.1016/0375-9474(95)00406-8
published in Nuclear Physics A 596(3-4), 515-552 (Elsevier BV) · 42 pages, uuencoded 7 figures (epsfig.sty included), LaTeX
arxiv created 1995/05/12 · openalex publication_date 1996/01/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Exchange vector currents are calculated up to one-loop order (corresponding to next-to-next-to-leading order) in chiral perturbation theory. As an illustration of the power of the approach, we apply the formalism to the classic nuclear process n+p→ d +γ at thermal energy. The exchange current correction comes out to be (4.5 ± 0.3) % in amplitude giving a predicted cross section σ= (334± 3) \mbox mb in excellent agreement with the experimental value (334.2± 0.5) \mbox mb. Together with the axial charge transitions computed previously, this result provides a strong support for the power of chiral Lagrangians in nuclear physics. As a by-product of our results, we suggest an open problem in the application of chiral Lagrangian approach to nuclear processes that has to do with giving a physical meaning to the short-range correlations that play an important role in nuclei.