QCD resummation for high-p_T jet shapes at hadron colliders

2021/11/20 by Khelifa-Kerfa, Kamel · 3 citations
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph)

paper · doi:10.48550/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.

Cited by

• Structure of non-global logarithms with Cambridge/Aachen clustering
• Jet-mass in V/H+jet up to four-loops with k_t clustering
• Hemisphere mass up to four-loops with generalised k_t algorithms

Related

• The Edge of Jets and Subleading Non-Global Logs
• Jet shapes in H/V boson + jet with k_t clustering at hadron colliders
• Analytical studies for non-perturbative QCD of jets at hadron colliders
• Jet Substructure at the Large Hadron Collider
• Automated resummation of jet observables in QCD