QCD Corrections to Static Heavy Quark Form Factors

Abstract

Interactions of heavy quarks, in particular of top quarks, with electroweak gauge bosons are expected to be very sensitive to new physics effects related to electroweak symmetry breaking. These interactions are described by the so-called static form factors, which include anomalous magnetic moments and the effective weak charges. We compute the second-order QCD corrections to these static form factors, which turn out to be sizeable and need to be taken into account in searches for new anomalous coupling effects.

Revtex, 4 pages

References in corpus (13)

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• Two-loop QCD Corrections to the Heavy Quark Form Factors: the Vector Contributions
• Probing Electroweak Top Quark Couplings at Hadron Colliders
• Two-Loop QCD Corrections to the Heavy Quark Form Factors: Anomaly Contributions
• Analysis of tbW and ttZ couplings from CLEO and LEP/SLC data
• Two-Loop QCD Corrections to the Heavy Quark Form Factors: Axial Vector Contributions
• Direct Measurement of the Top Quark Charge at Hadron Colliders
• Optimal-Observable Analysis of the Angular and Energy Distributions for Top-Quark Decay Products at Polarized Linear Colliders
• Top-quark spin correlation at Linear Colliders with anomalous couplings
• The Weak-Magnetic Moment of Heavy Quarks
• Non-commuting ETC corrections to zt\bar{t} vertex
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Cited by in corpus (31)

• Infrared singularities of QCD amplitudes with massive partons
• Feynman Diagrams and Differential Equations
• Physics at the e+ e- Linear Collider
• Two-Loop Fermionic Corrections to Heavy-Quark Pair Production: the Quark-Antiquark Channel
• Two-Loop Planar Corrections to Heavy-Quark Pair Production in the Quark-Antiquark Channel
• Three-Loop Chromomagnetic Interaction in HQET
• Improved determination of Heavy Quarkonium magnetic dipole transitions in pNRQCD
• Electromagnetic dipole moments of the top quark
• Massive three-loop form factor in the planar limit
• Measuring anomalous WW$\gamma$ and t$\bar{\text{t}}\gamma$ couplings using top+$\gamma$ production at the LHC
• Probing $tt\gamma$ and $ttZ$ couplings at the LHeC
• Top quark physics at the LHC
• Three-loop massive form factors: complete light-fermion and large-$N_c$ corrections for vector, axial-vector, scalar and pseudo-scalar currents
• Top Quark Anomalous Electromagnetic Couplings in Photon-Photon Scattering at the LHC
• Probing top quark electromagnetic dipole moments in single-top-plus-photon production
• Top quark electroweak couplings at future lepton colliders
• Improved sensitivity on the electromagnetic dipole moments of the top quark in $\gamma \gamma$, $\gamma {\gamma }^{\ast }$ and ${\gamma }^{\ast }{\gamma }^{\ast }$ collisions at the CLIC
• Semileptonic decays in the limit of a heavy daughter quark
• FCC-he sensitivity estimates on the anomalous electromagnetic dipole moments of the top-quark
• Top anomalous magnetic moment and the two photon decay of Higgs
• Two-loop Vertices with Vacuum Polarization Insertion
• Projections for model-independent sensitivity estimates on top-quark anomalous electromagnetic couplings at the FCC-he
• Lorentz violation in nucleon electromagnetic moments
• Effects of universal extra dimensions on top-quark electromagnetic interactions
• The top-quark polarization beyond the Standard Model in electron-positron annihilation
• Sensitivity measuring expected on the electromagnetic anomalous couplings in the $t\bar{t}\gamma$ vertex at the FCC-he
• Perturbative QCD at High Energy Colliders
• Energy correlation of bottom quarks from decays of top quarks in electron$-$positron annihilation
• Model-independent sensitivity estimates for the electromagnetic dipole moments of the top quark at the Large Hadron Collider and beyond
• Top Quark Electroweak Dipole Moment at a High Energy Muon Collider
• Energy and angular distributions of the bottom quark in the electron-positron annihilation $e^{+}{e}^{-}\to b{W}^{+}\bar{t}$