Nuclear muon capture by He3: Meson exchange currents for the triton channel

J. G. Congleton and E. Truhlík
Phys. Rev. C 53, 956 – Published 1 February 1996
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Abstract

We have calculated exchange corrections for nuclear muon capture by He3 leading to the H3 final state using the hard-pion model and realistic nuclear wave functions. These currents modify the vector and axial part of the weak nuclear current. In their absence the rate is 12% smaller than found by experiment. Our final result for the rate is 1502±32 per second. For the analyzing powers we find Av=0.515±0.005, At=-0.375±0.004, and AΔ=-0.110±0.006. These predictions use the PCAC value of gP. The variation of the observables with gP is also reported. © 1996 The American Physical Society.

  • Received 21 August 1995

DOI:https://doi.org/10.1103/PhysRevC.53.956

©1996 American Physical Society

Authors & Affiliations

J. G. Congleton

  • Department of Physics, University of Newcastle, Newcastle upon Tyne, NE1 7RU, United Kingdom

E. Truhlík

  • Institute of Nuclear Physics, Academy of Sciences of the Czech Republic, CZ 250 68 Řež near Prague, Czech Republic

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Vol. 53, Iss. 2 — February 1996

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