#### Alladi Ramakrishnan Hall

#### Higher order corrections and Resummation in perturbative QCD

#### Aparna Sankar

##### IMSc, Chennai

*The standard model of particle physics has been remarkably successful in*

describing the physics of elementary particles and it is perhaps the most

celebrated scientific theory of all time.

The precision studies at the hadron colliders facilitate crucial tests of

the consistency of the SM and any significant deviation can hint towards

new physics beyond SM.

As the precision of measurements of observables at the colliders improves,

the theoretical side is required to deliver equally accurate predictions

within the framework of SM or beyond. In upgrading the precision of

theoretical predictions for the observables, higher-order radiative

corrections in quantum chromodynamics (QCD) as well as in electro-weak

theory play an important role. This is the context where my Ph.D. thesis,

for which this is a pre-synopsis submission talk arises. The main goal of

this thesis is to compute the higher-order QCD corrections for some of the

important processes at the Large Hadron Collider (LHC) using the methods of

perturbative quantum chromodynamics (pQCD). The formalisms of these

computations mainly fall into two areas namely fixed-order and resummation

frameworks and have been achieved by using state-of-the-art modern

techniques and results.

Done