Type
Text
Type
Dissertation
Advisor
Begel, Michael | Rijssenbeek, Michael | Hemmick, Thomas | Sterman, George.
Date
2012-05-01
Keywords
Physics--Particle physics | Angular, Azimuthal, Decorrelation, Dijet, QCD, Rapidity
Department
Department of Physics
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/71241
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
The Large Hadron Collider at CERN is a proton-proton collider where gluon-gluon interactions dominate. Many of the hadron collider's signatures for Stand Model processes and for physics beyond the Standard Model involve gluons in the initial state. It is important then that the gluon evolution be well understood. The angular decorrelation between the two highest momentum jets in an event can be used to study the dynamics of multi-jet events. The differential cross-section has been measured as a function of the opening angle in phi and the opening angle in rapidity between the two highest momentum jets in an event, using an integrated luminosity of 36 inverse pb of proton-proton collisions collected by the ATLAS detector in 2010. The resulting cross-section has been compared with predictions for several Monte Carlo generators and a NLO calculation. The sub-leading jet is required to have a transverse momentum greater than 80 GeV with the leading most jet bounded by transverse momentum regions where the lowest pT > 110 GeV and the highest pT > 800 GeV. All jets are required to be within |y|<2.8 to be considered. | 187 pages
Recommended Citation
Gray, Julia Ann, "Dijet Angular Decorrelation with the ATLAS Detector at the LHC" (2012). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 447.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/447