Reconstructing a Quark and Gluon Response at ATLAS

Author: 
Date created: 
2016-09-02
Identifier: 
etd9809
Keywords: 
Jets, Quarks, Gluons, Jet Response, MPF
Abstract: 

Jets, collimated sprays of particles, are the most commonly produced objects in high energy subatomic collisions. Jets are the final state of colliding quarks and gluons. The fraction of a jet's energy that is measured by a calorimeter is called the response. Quark jets (jets initiated by quarks) and gluon jets (jets initiated by gluons) have a different response in the calorimeter. In this thesis the response of quark and gluon jets is reconstructed using jets in dijet and photon + jet events. To measure jet response in dijet events a method is developed to correct the energy of one jet in a dijet event so that it may be used as a reference object in the calibration procedure. The reconstructed dijet, quark and gluon responses are shown to agree with Monte Carlo simulation predictions within their uncertainties.

Document type: 
Thesis
Rights: 
This thesis may be printed or downloaded for non-commercial research and scholarly purposes. Copyright remains with the author.
File(s): 
Senior supervisor: 
Michel Vetterli
Department: 
Science: Department of Physics
Thesis type: 
(Thesis) M.Sc.
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