Higgs boson decay to top quarks at O(α2s)
Abstract
Three-loop corrections to the scalar and pseudoscalar current correlator are calculated. By applying the large momentum, expansion mass terms up to order (m2/q2)4 are evaluated analytically. As an application O(α2s) corrections to the decay of a scalar and pseudoscalar Higgs boson into top quarks are considered. It is shown that for a Higgs mass not far above the tt¯ threshold these higher order mass corrections are necessary to get reliable results.
- Publication:
-
Physical Review D
- Pub Date:
- October 1997
- DOI:
- 10.1103/PhysRevD.56.3980
- arXiv:
- arXiv:hep-ph/9704436
- Bibcode:
- 1997PhRvD..56.3980H
- Keywords:
-
- 12.38.-t;
- 14.65.Ha;
- 14.80.Bn;
- 14.80.Cp;
- Quantum chromodynamics;
- Top quarks;
- Standard-model Higgs bosons;
- Non-standard-model Higgs bosons;
- High Energy Physics - Phenomenology
- E-Print:
- Latex, 20 pages, 14 ps-figures. The complete paper, including figures, is also available via anonymous ftp at ftp://ttpux2.physik.uni-karlsruhe.de/ , or via www at http://www-ttp.physik.uni-karlsruhe.de/cgi-bin/preprints/