Muon capture
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Muon capture is the capture of a negative muon by a proton, usually resulting in production of a neutron and a neutrino, and sometimes a gamma photon.
Muon capture by heavy nuclei often leads to emission of particles; most often neutrons, but charged particles can be emitted as well.
Ordinary muon capture (OMC) involves capture of a negative muon from the atomic orbital without emission of a gamma photon:
- μ− + p+ → ν + n0
Radiative muon capture (RMC) is a radiative version of OMC, where a gamma photon is emitted:
- μ− + p+ → ν + n0 + γ
One motivation for the study of muon capture on the proton is its connection to the proton's induced pseudoscalar form factor gp.
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[edit] References
- T. Gorringe and H.W. Fearing (2004). "Induced pseudoscalar coupling of the proton weak interaction" (subscription required). Rev.Mod.Phys. 76: 31–91. doi:.
- V.A. Andreev et al. (2007). "Measurement of the Rate of Muon Capture in Hydrogen Gas and Determination of the Proton's Pseudoscalar Coupling gP" (subscription required).
