Higgs boson decay to top quarks at O(α^{2}_{s})
Abstract
Threeloop corrections to the scalar and pseudoscalar current correlator are calculated. By applying the large momentum, expansion mass terms up to order (m^{2}/q^{2})^{4} are evaluated analytically. As an application O(α^{2}_{s}) 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:hepph/9704436
 Bibcode:
 1997PhRvD..56.3980H
 Keywords:

 12.38.t;
 14.65.Ha;
 14.80.Bn;
 14.80.Cp;
 Quantum chromodynamics;
 Top quarks;
 Standardmodel Higgs bosons;
 Nonstandardmodel Higgs bosons;
 High Energy Physics  Phenomenology
 EPrint:
 Latex, 20 pages, 14 psfigures. The complete paper, including figures, is also available via anonymous ftp at ftp://ttpux2.physik.unikarlsruhe.de/ , or via www at http://wwwttp.physik.unikarlsruhe.de/cgibin/preprints/