2010/01/18 by Harlander, Robert, Mantler, Hendrik, Marzani, Simone +1
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)
paper · doi:10.48550/arxiv.1001.2971
The evaluation of the top quark mass suppressed terms to the Higgs production cross section in gluon fusion at next-to-next-to-leading order is reported on. In the region below threshold, the Feynman diagrams are evaluated using asymptotic expansions. The result is then matched to the high-energy limit derived from kT factorization. The result shows that the heavy-top limit used so far approximates the full result to better than 1%.