4 papers
Ward identity preserving local ultraviolet counterterms for photoproduction at two loops in QCD
Charalampos Anastasiou, Julia Karlen, Roshni Sahoo +2
We review the construction of locally finite two-loop amplitude integrands for photoproduction via quark annihilation, presented in arXiv:2509.07805. Building on established techni…
Local finiteness for real-virtual corrections to electroweak production in partonic collisions
Charalampos Anastasiou, Julia Karlen, Yao Ma +1
We present a local subtraction scheme that enables the combined integration of loop momenta and the final-state parton phase space in real-virtual NNLO QCD corrections to cross sec…
General finite two-loop amplitude integrand for photoproduction in quark annihilation
Charalampos Anastasiou, Julia Karlen, Roshni Sahoo +2
The construction of integrands free of infrared and ultraviolet singularities may enable the application of numerical methods to evaluate loop amplitudes that are inaccessible with…
Locally finite two-loop amplitudes for electroweak production through gluon fusion
Charalampos Anastasiou, Julia Karlen, George Sterman +1
The computation of two-loop amplitudes for the production of multiple Higgs and electroweak gauge bosons via gluon fusion with exact dependence on quark masses relies primarily on…