Radiative Muon Capture on Hydrogen and the Induced Pseudoscalar Coupling.
/ Authors
G. Jonkmans, S. Ahmad, D. S. Armstrong, G. Azuelos, G. Azuelos, W. Bertl, M. Blecher, C. Q. Chen, P. Depommier, B. Doyle
and 18 more authors
T. Egidy, T. Gorringe, P. Gumplinger, M. Hasinoff, D. Healey, A. Larabee, J. Macdonald, S. C. McDonald, M. Munro, J. Poutissou, R. Poutissou, B. Robertson, D. Sample, E. Saettler, C. Sigler, G. Taylor, D. H. Wright, N. S. Zhang
/ Abstract
Next to the hydrogen atom, the µ − p system is the most fundamental lepton-hadron system; therefore it can be used to test and extend our basic knowledge of the weak semi-leptonic interaction between leptons and quarks. Radiative muon capture (RMC) is much more sensitive than ordinary muon capture (OMC) to the induced pseudoscalar coupling constant of the weak semi-leptonic current because of the much larger range of momentum transfers which can occur in RMC. A status report on TRIUMF E452, Radiative Muon Capture on Hydrogen, which is anticipating a 10% measurement of this coupling constant, is presented.
Journal: Physical review letters