1998/11/03 by Il-Tong Cheon, Myung-Ki Cheoun, Cheon, Il-Tong +2
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #Nuclear Theory (nucl-th) #Particle physics theoretical and experimental studies #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9811009
11 pages, 2 figures
openalex publication_date 1998/11/03 · arxiv created 1998/11/09 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The recent TRIUMF experiment for μ- p → n νμ γ gave a surprising result that the induced pseudoscalar coupling constant gP was larger than the value obtained from μ- p → n νμ experiment as much as 44 %. Reexamining contribution of the axial vector current, we found an additional term to the matrix element of Beder and Fearing which was used to extract the gP value from the measured photon energy spectrum. This additional term plays a key role to restore the reliability of gP (- 0.88 mμ2) = 6.77 gA (0).