MUON CAPTURE

'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⁺ → ''nu'' + n
'Radiative muon capture' ('RMC') is a radiative version of OMC, where a gamma photon is emitted:
:μ^- + p⁺ → ''nu'' + n + γ
One motivation for the study of muon capture on the proton is its connection to the proton's induced pseudoscalar form factor g_p.

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References

References

★ Induced pseudoscalar coupling of the proton weak interaction, T. Gorringe and H.W. Fearing, , , Rev.Mod.Phys., 2004

★ Measurement of the Rate of Muon Capture in Hydrogen Gas and Determination of the Proton's Pseudoscalar Coupling g_P, V.A. Andreev et al., , , , 2007