The Solar hep Process in Effective Field Theory

2001/07/04 by T. -S. Park, T.-S. Park, L. E. Marcucci +18
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Neutrino Physics Research #Nuclear Theory (nucl-th) #Nuclear physics research studies #Particle physics theoretical and experimental studies #astro-ph #hep-ph #nucl-th

paper · pdf · doi:10.48550/arxiv.nucl-th/0107012

4 pages, Revtex. Minor revision has been made

openalex publication_date 2001/07/04 · arxiv created 2001/08/03 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01

Abstract

Using effective field theory, we calculate the S-factor for the hep process in a totally parameter-free formulation. The transition operators are organized according to chiral counting, and their matrix elements are evaluated using the realistic nuclear wave functions obtained in the correlated-hyperspherical-harmonics method. Terms of up to next-to-next-to-next-to-leading order in heavy-baryon chiral perturbation theory are considered. Fixing the only parameter in the theory by fitting the tritium β-decay rate, we predict the hep S-factor with accuracy better than ∼ 20 %.

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