Speaker
Description
In perturbative QCD, processes involving quark scattering provide the simplest way of studying non-Abelian scattering amplitudes. To that end, in this talk I will discuss our calculation for the Form Factor of the Higgs boson production via light quark mediated Gluon Fusion process in the high energy/small quark mass limit, where the leading contribution comes in the form of large double logarithms for each power of the strong coupling constant (α_s). We reproduced the leading coefficient (Next-to-Leading order in quark mass (m_q)) for the asymptotic expansion of the form factor in the high energy approximation; and extended the analysis to next coefficient which is at Next-to-Next-to-Leading order (O(m_q^3)). Three distinct sources of diagrams contribute to this coefficient at this order; the complete analytic result for which is presented at three loops. We also present all order analysis in the large-N_c limit of QCD as well as for the opposite Abelian limit. Our results provide a universal estimate of the light quark effects at the higher orders for both the Higgs boson production and decay processes.
| Your Email | smodi@ualberta.ca |
|---|---|
| Supervisor | Alexander Penin |
| Supervisor Email | penin@ualberta.ca |
| Funding Agency | University of Alberta |
