Soft and Collinear Enhancements to Top Quark and Higgs Cross Sections
نویسنده
چکیده
I present calculations of soft and collinear corrections to the cross sections for single top quark production, and for Higgs production via bb̄ → H at the Tevatron and the LHC. I show that the corrections provide significant enhancements to the cross sections in both cases. For single top production the soft gluon corrections dominate the cross section, particularly in the s channel and in tW production. For Higgs production it is shown that purely collinear terms have to be included as well to provide an accurate calculation. Presented at Cracow Epiphany Conference on LHC Physics, January 2008
منابع مشابه
Next-to-Next-to-Leading-Order Collinear and Soft Gluon Corrections for T-Channel Single Top Quark Production
I present the resummation of collinear and soft gluon corrections to single top quark production in the t channel at next-to-next-to-leading logarithm (NNLL) accuracy using two-loop soft anomalous dimensions. The expansion of the resummed cross section yields approximate next-to-next-to-leading order (NNLO) cross sections. Numerical results for t-channel single top quark (or single antitop) pro...
متن کاملAn approximation for NLO single Higgs boson inclusive transverse momentum distributions in hadron-hadron collisions
In the framework of the gluon-gluon fusion process for Higgs boson production there are two different prescriptions. They are given by the exact process where the gluons couple via top-quark loops to the Higgs boson and by the approximation where the top-quark mass mt is taken to infinity. In the latter case the coupling of the gluons to the Higgs boson is described by an effective Lagrangian. ...
متن کاملHiggs Production via bb̄ → H in Hadron Colliders
I present NNNLO collinear and soft gluon corrections for Higgs production via the process bb̄ → H. I show that the collinear corrections dominate and contribute large enhancements to the cross section at both the Tevatron and the LHC.
متن کاملHiggs Production via b bbar -> H in Hadron Colliders
I present NNNLO collinear and soft gluon corrections for Higgs production via the process bb̄ → H. I show that the collinear corrections dominate and contribute large enhancements to the cross section at both the Tevatron and the LHC.
متن کاملCollinear and soft gluon corrections to Higgs production at NNNLO
I present analytical expressions for the collinear and soft gluon corrections to Higgs production via the process b ¯ b → H as well as gg → H through next-to-next-to-next-to-leading order (NNNLO). The soft corrections are complete while the collinear corrections include leading and some subleading logarithms. Numerical results at the Tevatron and the LHC are presented, primarily for b ¯ b → H. ...
متن کامل