EPJ Web of Conferences
Volume 66, 2014INPC 2013 – International Nuclear Physics Conference
|Number of page(s)||4|
|Section||Fundamental Symmetries and Interactions in Nuclei|
|Published online||20 March 2014|
Final results of μp capture rate ΛS and pseudoscalar coupling gP
Laboratory for Particle Physics LTP, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
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Published online: 20 March 2014
We present the final results of muon capture on proton μ- + p → νμ + n, which were obtained by the MuCap Collaboration at the Paul Scherrer Institute. The singlet μp capture rate ΛS is determined as the difference between the lifetimes of μp and μ+. Our result is ΛSMuCap = 714.9 ± 5.4stat ± 5.1syst s-1 in excellent agreement with the prediction of chiral perturbation theory ΛSCHPT = 712.7 ± 4.3 s-1. The induced pseudoscalar coupling constant results as gPMuCap = 8.06 ± 0.48exp ± 0.28th whereas gPCHPT = 8.26 ± 0.23.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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