Search for Dark Matter with ATLAS: Using Events with a Highly Energetic Jet and Missing Transverse Momentum in Proton-Proton Collisions at √s = 8 TeV de Ruth Pöttgen

Search for Dark Matter with ATLAS: Using Events with a Highly Energetic Jet and Missing Transverse Momentum in Proton-Proton Collisions at √s = 8 TeV: Springer Theses

Autor Ruth Pöttgen

en Limba Engleză Paperback – 31 mai 2018

This thesis describes in detail a search for weakly interacting massive particles as possible dark matter candidates, making use of so-called mono-jet events. It includes a detailed description of the run-1 system, important operational challenges, and the upgrade for run-2. The nature of dark matter, which accounts for roughly 25% of the energy-matter content of the universe, is one of the biggest open questions in fundamental science. The analysis is based on the full set of proton-proton collisions collected by the ATLAS experiment at the Large Hadron Collider at √s = 8 TeV. Special attention is given to the experimental challenges and analysis techniques, as well as the overall scientific context beyond particle physics. The results complement those of non-collider experiments and yield some of the strongest exclusion bounds on parameters of dark matter models by the end of the Large Hadron Collider run-1.

Details of the upgrade of the ATLAS Central Trigger for run-2 are also included.

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Specificații

ISBN-13: 9783319822518
ISBN-10: 3319822519
Ilustrații: XV, 322 p. 134 illus., 124 illus. in color.
Dimensiuni: 155 x 235 mm
Greutate: 0.48 kg
Ediția:Softcover reprint of the original 1st ed. 2016
Editura: Springer International Publishing
Colecția Springer
Seria Springer Theses

Locul publicării:Cham, Switzerland

Cuprins

Introduction.- Theory and Motivation.- The Standard Model of Particle Physics.- Dark Matter.- Proton-Proton Collisions.- Mono-Jet Events as Dark Matter Signature at Colliders.- Large Hadron Collider.-

The ATLAS Experiment.- Operation of the Central Trigger during run-I.- Upgrade of the Central Trigger.- Analysis Strategy.- Data and Simulated Samples.- Physics Objects Deﬁnitions.- Event Selection.- Background Estimation.- Results and Interpretation.- Prospects with Future LHC Data

Conclusion.

Notă biografică

The author obtained her Diploma in Physics at the University of Mainz (JGU), Germany, in 2011 upon completion of her research project on a differential cross-section measurement of Z-boson production with the ATLAS experiment. As a CERN doctoral student, funded by a Wolfgang-Gentner-Scholarship, she made essential contributions to the operation and upgrade of the ATLAS Central Trigger and conducted a search for Dark Matter in so-called mono-jet events. She obtained her PhD "with distinction" at JGU in May 2015 and was awarded prizes for an outstanding thesis both from the ATLAS collaboration and from the physics department of JGU. Since March 2015 she has been a postdoctoral researcher at Stockholm University, coordinating the ATLAS search for leptoquarks.

Textul de pe ultima copertă

This thesis describes in detail a search for weakly interacting massive particles as possible dark matter candidates, making use of so-called mono-jet events. It includes a detailed description of the run-1 system, important operational challenges, and the upgrade for run-2. The nature of dark matter, which accounts for roughly 25% of the energy-matter content of the universe, is one of the biggest open questions in fundamental science. The analysis is based on the full set of proton-proton collisions collected by the ATLAS experiment at the Large Hadron Collider at √s = 8 TeV. Special attention is given to the experimental challenges and analysis techniques, as well as the overall scientific context beyond particle physics. The results complement those of non-collider experiments and yield some of the strongest exclusion bounds on parameters of dark matter models by the end of the Large Hadron Collider run-1.

Details of the upgrade of the ATLAS Central Trigger for run-2 are also included.

Caracteristici

Nominated as an outstanding PhD thesis by the CERN, Geneva Winner of ATLAS thesis award 2016 Provides in-depth descriptions of analysis techniques and challenges particularly relevant for but not restricted to the mono-jet signature Documents cutting-edge results from the Large Hadron Collider run-1 in the search for WIMPs as dark matter candidates in the mono-jet signature, embedded in the overall scientific context beyond particle physics Includes a detailed description of the run-1 ATLAS Central Trigger, important operational challenges, and its upgrade for Large Hadron Collider run-2 Includes supplementary material: sn.pub/extras