Advances in Jet Substructure at the LHC

Advances in Jet Substructure at the LHC
Title Advances in Jet Substructure at the LHC PDF eBook
Author Roman Kogler
Publisher Springer Nature
Pages 287
Release 2021-05-10
Genre Science
ISBN 3030728587

Download Advances in Jet Substructure at the LHC Book in PDF, Epub and Kindle

This book introduces the reader to the field of jet substructure, starting from the basic considerations for capturing decays of boosted particles in individual jets, to explaining state-of-the-art techniques. Jet substructure methods have become ubiquitous in data analyses at the LHC, with diverse applications stemming from the abundance of jets in proton-proton collisions, the presence of pileup and multiple interactions, and the need to reconstruct and identify decays of highly-Lorentz boosted particles. The last decade has seen a vast increase in our knowledge of all aspects of the field, with a proliferation of new jet substructure algorithms, calculations and measurements which are presented in this book. Recent developments and algorithms are described and put into the larger experimental context. Their usefulness and application are shown in many demonstrative examples and the phenomenological and experimental effects influencing their performance are discussed. A comprehensive overview is given of measurements and searches for new phenomena performed by the ATLAS and CMS Collaborations. This book shows the impressive versatility of jet substructure methods at the LHC.

Looking Inside Jets

Looking Inside Jets
Title Looking Inside Jets PDF eBook
Author Simone Marzani
Publisher Springer
Pages 210
Release 2019-05-11
Genre Science
ISBN 3030157091

Download Looking Inside Jets Book in PDF, Epub and Kindle

This concise primer reviews the latest developments in the field of jets. Jets are collinear sprays of hadrons produced in very high-energy collisions, e.g. at the LHC or at a future hadron collider. They are essential to and ubiquitous in experimental analyses, making their study crucial. At present LHC energies and beyond, massive particles around the electroweak scale are frequently produced with transverse momenta that are much larger than their mass, i.e., boosted. The decay products of such boosted massive objects tend to occupy only a relatively small and confined area of the detector and are observed as a single jet. Jets hence arise from many different sources and it is important to be able to distinguish the rare events with boosted resonances from the large backgrounds originating from Quantum Chromodynamics (QCD). This requires familiarity with the internal properties of jets, such as their different radiation patterns, a field broadly known as jet substructure. This set of notes begins by providing a phenomenological motivation, explaining why the study of jets and their substructure is of particular importance for the current and future program of the LHC, followed by a brief but insightful introduction to QCD and to hadron-collider phenomenology. The next section introduces jets as complex objects constructed from a sequential recombination algorithm. In this context some experimental aspects are also reviewed. Since jet substructure calculations are multi-scale problems that call for all-order treatments (resummations), the bases of such calculations are discussed for simple jet quantities. With these QCD and jet physics ingredients in hand, readers can then dig into jet substructure itself. Accordingly, these notes first highlight the main concepts behind substructure techniques and introduce a list of the main jet substructure tools that have been used over the past decade. Analytic calculations are then provided for several families of tools, the goal being to identify their key characteristics. In closing, the book provides an overview of LHC searches and measurements where jet substructure techniques are used, reviews the main take-home messages, and outlines future perspectives.

Introduction to Soft-Collinear Effective Theory

Introduction to Soft-Collinear Effective Theory
Title Introduction to Soft-Collinear Effective Theory PDF eBook
Author Thomas Becher
Publisher Springer
Pages 214
Release 2015-03-04
Genre Science
ISBN 3319148486

Download Introduction to Soft-Collinear Effective Theory Book in PDF, Epub and Kindle

Among resummation techniques for perturbative QCD in the context of collider and flavor physics, soft-collinear effective theory (SCET) has emerged as both a powerful and versatile tool, having been applied to a large variety of processes, from B-meson decays to jet production at the LHC. This book provides a concise, pedagogical introduction to this technique. It discusses the expansion of Feynman diagrams around the high-energy limit, followed by the explicit construction of the effective Lagrangian - first for a scalar theory, then for QCD. The underlying concepts are illustrated with the quark vector form factor at large momentum transfer, and the formalism is applied to compute soft-gluon resummation and to perform transverse-momentum resummation for the Drell-Yan process utilizing renormalization group evolution in SCET. Finally, the infrared structure of n-point gauge-theory amplitudes is analyzed by relating them to effective-theory operators. This text is suitable for graduate students and non-specialist researchers alike as it requires only basic knowledge of perturbative QCD.

Momentum Distributions

Momentum Distributions
Title Momentum Distributions PDF eBook
Author Richard N. Silver
Publisher Springer Science & Business Media
Pages 400
Release 2013-11-11
Genre Science
ISBN 1489925546

Download Momentum Distributions Book in PDF, Epub and Kindle

This volume presents the proceedings of the Workshop on Momentum Distributions held on October 24 to 26, 1988 at Argonne National Laboratory. This workshop was motivated by the enormous progress within the past few years in both experimental and theoretical studies of momentum distributions, by the growing recognition of the importance of momentum distributions to the characterization of quantum many-body systems, and especially by the realization that momentum distribution studies have much in common across the entire range of modern physics. Accordingly, the workshop was unique in that it brought together researchers in nuclear physics, electronic systems, quantum fluids and solids, and particle physics to address the common elements of momentum distribution studies. The topics dis cussed in the workshop spanned more than ten orders of magnitude range in charac teristic energy scales. The workshop included an extraordinary variety of interactions from Coulombic to hard core repulsive, from non-relativistic to extreme relativistic.

Basics of Perturbative QCD

Basics of Perturbative QCD
Title Basics of Perturbative QCD PDF eBook
Author Yuri Dokshitzer
Publisher Atlantica Séguier Frontières
Pages 286
Release 1991
Genre Perturbation (Quantum dynamics).
ISBN 9782863321010

Download Basics of Perturbative QCD Book in PDF, Epub and Kindle

The Black Book of Quantum Chromodynamics

The Black Book of Quantum Chromodynamics
Title The Black Book of Quantum Chromodynamics PDF eBook
Author John Campbell
Publisher Oxford University Press
Pages 760
Release 2018
Genre Science
ISBN 0199652740

Download The Black Book of Quantum Chromodynamics Book in PDF, Epub and Kindle

This title provides an in-depth introduction to the particle physics of current and future experiments at particle accelerators. The text provides the reader with an overview of practically all aspects of the strong interaction necessary to understand and appreciate modern particle phenomenology at the energy frontier.

QCD and Collider Physics

QCD and Collider Physics
Title QCD and Collider Physics PDF eBook
Author R. K. Ellis
Publisher Cambridge University Press
Pages 462
Release 2003-12-04
Genre Science
ISBN 9780521545891

Download QCD and Collider Physics Book in PDF, Epub and Kindle

A detailed overview of the physics of high-energy colliders emphasising the role of QCD.