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Articles 1 - 7 of 7
Full-Text Articles in Physics
Higher Order Corrections To H± Production, Nikolaos Kidonakis
Higher Order Corrections To H± Production, Nikolaos Kidonakis
Faculty and Research Publications
I discuss recent calculations of higher-order corrections to charged Higgs production through various partonic subprocesses. Particular attention is paid to H− production in association with a top quark at the LHC.
Theoretical Top Quark Cross Section At The Fermilab Tevatron And The Cern Lhc, Nikolaos Kidonakis, Ramona Vogt
Theoretical Top Quark Cross Section At The Fermilab Tevatron And The Cern Lhc, Nikolaos Kidonakis, Ramona Vogt
Faculty and Research Publications
We present results for the top quark pair cross section at the Tevatron and the LHC. We use the resummed double differential cross section, employing the fully kinematics-dependent soft-anomalous-dimension matrices, to calculate the soft-gluon contributions at next-to-next-to-leading order (NNLO). We improve and update our previous estimates by refining our methods, including further subleading terms, and employing the most recent parton distribution function sets. The NNLO soft corrections significantly enhance the NLO cross section while considerably reducing the scale dependence. We provide a detailed discussion of all theoretical uncertainties in our calculation, including kinematics, scale, and parton distribution uncertainties, and clarify …
The Theoretical Top Quark Cross Section At The Tevatron And The Lhc, Nikolaos Kidonakis, Ramona Vogt
The Theoretical Top Quark Cross Section At The Tevatron And The Lhc, Nikolaos Kidonakis, Ramona Vogt
Faculty and Research Publications
We present results for the top quark pair cross section at the Tevatron and the LHC. We use the resummed double differential cross section, employing the fully kinematics-dependent soft-anomalous-dimension matrices, to calculate the soft-gluon contributions at next-to-next-to-leading order (NNLO). We improve and update our previous estimates by refining our methods, including further subleading terms, and employing the most recent parton distribution function sets. The NNLO soft corrections significantly enhance the NLO cross section while considerably reducing the scale dependence. We provide a detailed discussion of all theoretical uncertainties in our calculation, including kinematics, scale, and parton distribution uncertainties, and clarify …
Soft And Collinear Enhancements To Top Quark And Higgs Cross Sections, Nikolaos Kidonakis
Soft And Collinear Enhancements To Top Quark And Higgs Cross Sections, Nikolaos Kidonakis
Faculty and Research Publications
I present calculations of soft and collinear corrections to the cross-sections for single top quark production, and for Higgs production via bb 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.
Higgs Production Via B Bbar -> H In Hadron Colliders, Nikolaos Kidonakis
Higgs Production Via B Bbar -> H In Hadron Colliders, Nikolaos Kidonakis
Faculty and Research Publications
I present NNNLO collinear and soft gluon corrections for Higgs production via the process b bbar -> H. I show that the collinear corrections dominate and contribute large enhancements to the cross section at both the Tevatron and the LHC.
Status Of Eikonal Two-Loop Calculations With Massive Quarks, Nikolaos Kidonakis, Philip Stephens
Status Of Eikonal Two-Loop Calculations With Massive Quarks, Nikolaos Kidonakis, Philip Stephens
Faculty and Research Publications
We present results for two-loop diagrams with massive quarks in the eikonal approximation. Explicit expressions are given for the UV poles in dimensional regularization of several of the required integrals.
Collinear And Soft-Gluon Corrections To Higgs Production At Next-To-Next-To-Next-To-Leading Order, Nikolaos Kidonakis
Collinear And Soft-Gluon Corrections To Higgs Production At Next-To-Next-To-Next-To-Leading Order, Nikolaos Kidonakis
Faculty and Research Publications
I present analytical expressions for the collinear and soft-gluon corrections to Higgs production via the process b (b) over bar -> 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 CERN LHC are presented, primarily for b (b) over bar -> H. It is shown that the collinear terms greatly improve the soft and virtual approximation at next-to-leading order and next-to-next-to-leading order, especially when subleading terms are included. The NNNLO collinear and soft corrections provide significant …