Electroweak Physics at the Large Hadron Collider with the ATLAS Detector

Standard Model Measurement, Supersymmetry Searches, Excesses, and Upgrade Electronics
1. Auflage 2020
ISBN: 978-3-030-57015-6
Verlag: Springer International Publishing

Buch, Englisch, 322 Seiten, Format (B × H): 160 mm x 241 mm, Gewicht: 688 g

Reihe: Springer Theses

This thesis discusses searches for electroweakly produced supersymmetric partners of the gauge and the Higgs bosons (gauginos and higgsinos) decaying to multiple leptons, using pp collisions at sqrt(s) = 13 TeV. The thesis presents an in-depth study of multiple searches, as well as the first 13 TeV cross section measurement for the dominant background in these searches, WZ production. Two searches were performed using 36.1/fb of data: the gaugino search, which makes use of a novel kinematic variable, and the higgsino search, which produced the first higgsino limits at the LHC. A search using 139/fb of data makes use of a new technique developed in this thesis to cross check an excess of data above the background expectation in a search using a Recursive Jigsaw Reconstruction technique. None of the searches showed a significant excess of data, and limits were expanded with respect to previous results.
These searches will benefit from the addition of luminosity during HL-LHC; however, the current detector will not be able to withstand the increase in radiation. Electronics for the detector upgrade are tested and irradiated to ensure their performance.

Zielgruppe

Research

Autoren/Hrsg.

Resseguie, Elodie

Fachgebiete

• Mathematik | Informatik Mathematik Stochastik Mathematische Statistik
• Naturwissenschaften Physik Quantenphysik Teilchenphysik

Inhaltsverzeichnis

Introduction.- Theoretical Framework.- LHC and the ATLAS Detector.- HL-LHC Inner Detector Upgrade.- W±Z Cross-Section Measurement at ps = 13 TeV.- Searches for Electroweak SUSY: Motivation and Models.- Search for wino-bino production decaying via WZ at ps = 13 TeV.

Über Autor(innen)

Elodie received a B.S. in electrical engineering, with a minor in physics, from the University of California, Davis in 2014, and a Ph.D. in physics from the University of Pennsylvania in 2019. Elodie is currently a Chamberlain postdoctoral fellow at Lawrence Berkeley National Laboratory working on the ATLAS experiment.