Bochum 1998 – scientific programme
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HK: Hadronen und Kerne
HK 21: Weak Interaction and Fundamental Symmetries I
HK 21.5: Talk
Monday, March 16, 1998, 18:00–18:15, J
Radiative and non-radiative muon capture on the proton in heavy baryon chiral perturbation theory — •S. Scherer3, H. W. Fearing1, R. Lewis1, and N. Mobed2 — 1TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, Canada V6T 2A3 — 2Department of Physics, University of Regina, Regina, Saskatchewan, Canada S4S 0A2 — 3Institut f"ur Kernphysik, Johannes Gutenberg-Universit"at, J. J. Becher Weg 45, D-55099 Mainz
We have evaluated the amplitude for muon capture by a proton, µ + p → n + ν, to O(p3) within the context of heavy baryon chiral perturbation theory (HBChPT) using the O(p3) Lagrangian of Ecker and Mojžiš (E&M) [1]. We obtain expressions for the standard muon capture form factors and determine three of the coefficients of the E&M Lagrangian, namely, b7, b19, and b23 [2]. We describe progress on the next step, a calculation of the radiative muon capture process, µ + p → n + ν + γ.
[1] G. Ecker and M. Mojžiš, Phys. Lett. B 365, 312 (1996)
[2] H. W. Fearing, R. Lewis, N. Mobed, and S. Scherer, Phys. Rev. D 56, 1783 (1997)