Eur. Phys. J. C 20, 51-62
Radiative corrections to the decayA.G. Akeroyd1, A. Arhrib2, 3 and E. Naimi2, 3
1 KEK Theory Group, Tsukuba, Ibaraki 305-0801, Japan
2 Département de Mathématiques, Faculté des Sciences et Techniques, B.P 416, Tanger, Morocco
3 UFR -High Energy Physics, Physics Departement, Faculty of Sciences, P.O. Box 1014, Rabat, Morocco
(Received: 17 July 2000 / Revised version: 28 February 2001 / Published online: 3 May 2001 -© Springer-Verlag / Società Italiana di Fisica 2001 )
Full one-loop electroweak corrections to the on-shell decay are computed in the framework of models with two Higgs doublets (THDM). Such a decay may be dominant for over a wide range of parameter space relevant at present and future colliders. We show that the corrections may approach and in particular are sensitive to , which parameterizes the discrete symmetry breaking term. We suggest that a measurement of the branching ratio of may offer a possibility of measuring the magnitude of .
© Società Italiana di Fisica, Springer-Verlag 2001