We present a systematic formalism based on a factorization theorem in soft-collinear effective theory to describe non-global observables at hadron colliders, such as gap-between-jets cross sections. The cross sections are factorized into convolutions of hard functions, capturing the dependence on the partonic center-of-mass energy $\sqrt{\hat s}$, and low-energy matrix elements, which are...
Transverse Momentum Dependent (TMD) factorization leads to well established theorems for a restricted class of processes. In such cases, some of the effects produced by the soft radiation cancel out and the physics associated to them cannot be accessed. Extension of the factorization to non-standard processes inevitably leads to deal with the non trivial structure of the soft sector, revealing...
Track-based observables offer superior angular resolution and pile-up suppression. I developed a theoretical framework to account for the conversion to tracks using track functions, which are a kind of generalized fragmentation functions. I will discuss recent progress, including our determination of the evolution of track functions at order alpha_s^2, from which the evolution of multi-hadron...
