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Upper bound for the induced pseudoscalar form factor in muon capture

Journal Article · · Phys. Rev. Lett.; (United States)
It is shown, on very general grounds, that the Goldberger-Treiman (GT) value for the induced pseudoscalar form factor, h/sub A/, in muon-capture reactions represents an upper bound for any realistic h/sub A/ that takes into account corrections to (i) nuclear GT relations and (ii) the hypothesis of partial conservation of axial-vector current. The proof is independent of the particular model one might choose for these corrections. An application of this bound to muon capture on /sup 12/C makes it difficult to understand the sign of the experimentally reported induced pseudotensor form factor in /sup 12/B ..beta.. decay.
Research Organization:
Departamento de Fisica, Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico Nacional, Mexico 14, Distrito Federal
OSTI ID:
7097497
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 39:8; ISSN PRLTA
Country of Publication:
United States
Language:
English