4 papers
Towards mixed QCDxEW corrections to the charged-current Drell-Yan process with leptonic decay at high transverse masses
Christian Biello, Amlan Chakraborty, Giulio Gambuti +2
The Drell-Yan process is a key precision benchmark at the Large Hadron Collider and a sensitive probe of SM and SMEFT effects. Fully exploiting future LHC data requires percent-lev…
Light-by-light scattering at three loops in massless QCD and QED: amplitudes and cross sections
Piotr Bargiela, Amlan Chakraborty, Giulio Gambuti +1
We present the calculation of three-loop massless QCD and QED helicity amplitudes for light-by-light scattering. We make use of Lorentz tensor decomposition in the 't Hooft-Veltman…
Two-loop helicity amplitudes for diphoton production with massive quark loop
Taushif Ahmed, Amlan Chakraborty, Ekta Chaubey +1
We compute two-loop helicity amplitudes in QCD for diphoton production through quark- and gluon-initiated channels, accounting for a massive internal quark loop by keeping its full…
Three-loop helicity amplitudes for four-quark scattering in massless QCD
Fabrizio Caola, Amlan Chakraborty, Giulio Gambuti +2
We compute the three-loop corrections to the helicity amplitudes for scattering in massless QCD. In the Lorentz decomposition of the scattering amplitude we…