Add to ORKGThe real and imaginary part of the vacuum polarisation function \Pi(q^2) induced by a massive quark is calculated in perturbative QCD up to order \alpha_s^2. The method is described and the results are presented. This extends the calculation by K\"all\'en and Sabry from two to three loops
We compute the vacuum polarisation on the lattice in quenched QCD using non-perturbatively improved ...
This thesis is devoted to the study of mass effects in higher order radiative corrections within QED...
The heavy-quark contribution to the polarisation function $\Pi$ at higher perturbative orders is pre...
The three-loop vacuum polarization function \Pi(q^2) induced by a massive quark is calculated. A com...
The heavy-quark contribution to the polarization function Π at higher perturbative orders is pre...
New results at four-loop order in perturbative QCD for the first two Taylor coefficients of the heav...
We determine the full mass and $q^2$ dependence of the heavy quark vacuum polarization function $\Pi...
The vacuum polarization due to a virtual heavy quark pair and specifically the coefficients of its T...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
The experimental measurable R -ratio can be used to perform a precise determination of the charm- a...
We report about recent progress in computing four-loop massive correlators. The expansion of these c...
The heavy-quark contribution to the polarization function Π at higher perturbative orders is present...
We compute the vacuum polarisation on the lattice in quenched QCD using non-perturbatively improved ...
This thesis is devoted to the study of mass effects in higher order radiative corrections within QED...
The heavy-quark contribution to the polarisation function $\Pi$ at higher perturbative orders is pre...
The three-loop vacuum polarization function \Pi(q^2) induced by a massive quark is calculated. A com...
The heavy-quark contribution to the polarization function Π at higher perturbative orders is pre...
New results at four-loop order in perturbative QCD for the first two Taylor coefficients of the heav...
We determine the full mass and $q^2$ dependence of the heavy quark vacuum polarization function $\Pi...
The vacuum polarization due to a virtual heavy quark pair and specifically the coefficients of its T...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
Recent analytical and numerical results for the three-loop polarization function allow to present a ...
The experimental measurable R -ratio can be used to perform a precise determination of the charm- a...
We report about recent progress in computing four-loop massive correlators. The expansion of these c...
The heavy-quark contribution to the polarization function Π at higher perturbative orders is present...
We compute the vacuum polarisation on the lattice in quenched QCD using non-perturbatively improved ...
This thesis is devoted to the study of mass effects in higher order radiative corrections within QED...
The heavy-quark contribution to the polarisation function $\Pi$ at higher perturbative orders is pre...