Precise Determination of the Pion-Nuclear Coupling Parameter from Weak Processes in3He

1996/12/13 by Nimai C. Mukhopadhyay, K. Junker · 1 citation
Physics and Astronomy · #Atomic and Subatomic Physics Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1103/physrevlett.77.5342

published as Phys.Rev.Lett. 77 (1996) 5342-5345 · to be published in Phys. Rev. Lett

arxiv created 1996/12/13 · openalex publication_date 1996/12/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We utilize precise weak interaction experiments on atomic muon capture and beta decay in the A\phantom\rule0ex0ex=\phantom\rule0ex0ex3 nuclei and take into account the effects of nuclear ``anomalous thresholds'' to extract the pseudoscalar \ensuremathπ\ensuremath-³He\ensuremath-³H coupling parameter, G^eff(m_\ensuremathπ²)\phantom\rule0ex0ex=\phantom\rule0ex0ex45.8\ifmmode±\else\textpm\fi2.4. This is an order of magnitude improvement in precision over that from the use of pion-nuclear scattering data and dispersion relations.

Citations

• Nuclear muon capture byHe<mml:mprescripts/>3: Meson exchange currents for the triton channel

Cited by

• Nuclear muon capture on the proton and 3 He within the standard model and beyond