A bstract Jets and their substructure play a central role in many analyses at the Large
Hadron Collider (LHC). To improve the precision of measurements, as well as to enable …

We present the general form of a universal soft-collinear distribution operator to compute the
soft-virtual cross-section to next-to-next-to-next-to-next-to-leading order (N $^ 4$ LO) in QCD …

A bstract Through this article, we present the two-loop massless QCD corrections to the
production of di-Higgs and di-pseudo-Higgs boson through quark annihilation in the large …

A bstract The two-loop four-point amplitude of two massless SU (N) colored scalars and two
color singlet operators with different virtuality described by a half-BPS and Konishi operators …

We present the first calculations of two-point two-loop form factors (FFs) with a two identical
operators insertion in maximally supersymmetric Yang-Mills theory. In this article, we …

Form factors are important ingredients to investigate the principle of maximal
transcendentality (PMT) and to extract anomalous dimensions of local gauge invariant …

Scattering amplitudes and Cross Sections are most prominent observable in the context of
collider experiments. Almost everything we know experimentally about gauge theory is …

This thesis arises in the context of precision physics at hadron colliders. As Large Hadron
Collider (LHC) at CERN is close to its Run-3 phase and the experimental measure-ments …

This thesis contains works mainly on soft-virtual approximation to inclusive and differ-ential
observables for various Sudakov-type processes at the hadron colliders. Threshold …