Threshold corrections to the gamma t anti-t vertex at O(alpha alpha(s))

Abstract

In these proceedings a recent calculation of the last missing piece of the two-loop O(alpha alpha(s)) corrections to gamma t anti-t vertex at the t anti-t threshold due to the exchange of a W boson and a gluon is summarised. The calculation constitutes a building block of the top quark threshold production cross section at electron positron colliders.

arXiv commentLCWS08 proceedings

References in corpus (33)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Asymptotic expansion of Feynman integrals near threshold
• Cuba - a library for multidimensional numerical integration
• JaxoDraw: A graphical user interface for drawing Feynman diagrams
• Potential NRQCD: an effective theory for heavy quarkonium
• The analytical value of the electron (g-2) at order alpha^3 in QED
• Automatized analytic continuation of Mellin-Barnes integrals
• JaxoDraw: A graphical user interface for drawing Feynman diagrams. Version 2.0 release notes
• Feynman Integral Evaluation by a Sector decomposiTion Approach (FIESTA)
• Feynman Diagrams and Differential Equations
• High-precision calculation of multi-loop Feynman integrals by difference equations
• Two-loop Correction to the Leptonic Decay of Quarkonium
• Two-loop QCD corrections to the heavy quark pair production cross section in e+e- annihilation near the threshold
• AMBRE - a Mathematica package for the construction of Mellin-Barnes representations for Feynman integrals
• Two-loop QCD corrections of the massive fermion propagator
• Fermionic contributions to the three-loop static potential
• Multi-parameter fits to the t-tbar threshold observables at a future e+e- linear collider
• Heavy Quark Pair Production near Threshold with Potential Non-Relativistic QCD
• Gauss hypergeometric function: reduction, epsilon-expansion for integer/half-integer parameters and Feynman diagrams
• Power Counting in Dimensionally Regularized NRQCD
• Heavy Quarkonium Spectrum and Production/Annihilation Rates to order ${\beta }_0^3{\alpha }_s^3$
• Ultrasoft contribution to quarkonium production and annihilation
• Running of the heavy quark production current and 1/k potential in QCD
• Three-Loop Anomalous Dimension of the Heavy Quark Pair Production Current in Non-Relativistic QCD
• Electroweak Absorptive Parts in NRQCD Matching Conditions
• Ultrasoft contribution to heavy-quark pair production near threshold
• Analytic two-loop virtual corrections to $b-->d{l}^{+}{l}^{-}$
• Top-Antitop Pair Production close to Threshold: Synopsis of recent NNLO Results
• On Electroweak Matching Conditions for Top Pair Production at Threshold
• Complete Higgs mass dependence of top quark pair threshold production to order $\alpha {\alpha }_s$
• $\mathcal{O}(\alpha {\alpha }_s)$ corrections to the $\gamma t\bar{t}$ vertex at the top quark threshold
• NNNLO results on top-quark pair production near threshold
• Top Pair Production at Threshold and Effective Theories

Cited by in corpus (2)

• FIESTA 2: parallelizeable multiloop numerical calculations
• Four Loop Massless Propagators: a Numerical Evaluation of All Master Integrals