QCD resummation for high-p$_T$ jet shapes at hadron colliders

Kamel Khelifa-Kerfa

paper

QCD resummation for high-p $_{T}$ jet shapes at hadron colliders

arXiv:2111.10671

Abstract

Exploiting the substructure of jets observed at the LHC to better understand and interpret the experimental data has recently been a very active area of research. In this thesis we study the substructure of high-p $_{T}$ QCD jets, which form a background to many new physics searches. In particular, we explore in detail the perturbative distributions of a certain class of observables known as non-global jet shapes. More specifically, we identify and present state-of-the-art calculations, both at fixed-order and to all-orders in the perturbative expansion, of a set of large logarithms known as non-global logarithms. Hitherto, these logarithms have been largely mistreated, and in many cases ignored, in the literature despite being first pointed out more than a decade ago. Our work has triggered the interest of many groups, particularly Soft and Collinear Effective Theory (SCET) groups, and led to a flurry of papers on non-global logarithms and related issues.

arXiv commentPhD thesis (2012), 243 pages

QCD resummation for high-pT​ jet shapes at hadron colliders

Abstract

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QCD resummation for high-p $_{T}$ jet shapes at hadron colliders