Muon Capture and Muon Lifetime

2003/04/25 by P. Kammel, Kammel, Peter
Engineering · Physics and Astronomy · #FOS: Physical sciences #Muon and positron interactions and applications #Neutrino Physics Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.nucl-ex/0304019

openalex publication_date 2003/04/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We survey a new generation of precision muon lifetime experiments. The goal of the MuCap experiment is a determination of the rate for muon capture on the free proton to 1 percent, from which the induced pseudoscalar form factor g_P of the nucleon can be derived with 7 percent precision. A measurement of the related μd capture process with similar precision would provide unique information on the axial current in the two nucleon system, relevant for fundamental neutrino reactions on deuterium. The MuLan experiment aims to measure the positive muon lifetime with 20 fold improved precision compared to present knowledge in order to determine the Fermi Coupling Constant G_F to better than 1 ppm.

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