All Outputs (3)

Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel (2021)
Journal Article
Badger, S., Chaubey, E., Hartanto, H. B., & Marzucca, R. (2021). Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel. Journal of High Energy Physics, 2021(6), https://doi.org/10.1007/jhep06%282021%29163

We present a complete set of analytic helicity amplitudes for top quark pair production via gluon fusion at two-loops in QCD. For the first time, we include corrections due to massive fermion loops which give rise to integrals over elliptic curves. W... Read More about Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel.

All-Order Amplitudes at any Multiplicity in the Multi-Regge Limit (2020)
Journal Article
Del Duca, V., Druc, S., Drummond, J., Duhr, C., Dulat, F., Marzucca, R., Papathanasiou, G., & Verbeek, B. (2020). All-Order Amplitudes at any Multiplicity in the Multi-Regge Limit. Physical Review Letters, 124(16), Article 161602. https://doi.org/10.1103/physrevlett.124.161602

We propose an all-loop expression for scattering amplitudes in planar N = 4 super Yang-Mills theory in multi-Regge kinematics valid for all multiplicities, all helicity configurations, and arbitrary logarithmic accuracy. Our expression is arrived at... Read More about All-Order Amplitudes at any Multiplicity in the Multi-Regge Limit.

Three-loop contributions to the ρ parameter and iterated integrals of modular forms (2020)
Journal Article
Abreu, S., Becchetti, M., Duhr, C., & Marzucca, R. (2020). Three-loop contributions to the ρ parameter and iterated integrals of modular forms. Journal of High Energy Physics, 2020(2), Article 050. https://doi.org/10.1007/jhep02%282020%29050

We compute fully analytic results for the three-loop diagrams involving two different massive quark flavours contributing to the ρ parameter in the Standard Model. We find that the results involve exactly the same class of functions that appears in t... Read More about Three-loop contributions to the ρ parameter and iterated integrals of modular forms.