Prospects for measuring the differential high p_1tnT b-jet cross section with the ATLAS detector [Elektronische Ressource] / vorgelegt von Kai Grybel

Prospects for Measuring the Differential High pTb-Jet Cross Section with the ATLAS DetectorDISSERTATIONzur Erlangung des akademischen Grades einesDoktors der Naturwissenschaftenvorgelegt vonDiplom-Physiker Kai Karsten Grybelgeb. am 30.07.1977 in K¨olneingereicht beim Fachbereich Physikder Universit¨at SiegenDezember 2010IIGutachter der Dissertation: Prof. Dr. P.BuchholzProf. Dr. C.GrupenDatum der Disputation: 21. Januar 2011IIIAbstractCurrently, theLargeHadronCollider(LHC)atCERNinGenevaacceleratesprotons√up to an energy of 3.5TeV resulting in collisions of a center-of-mass energy of s =7TeV. To study the production ofb-quarks in proton-protoncollisions is part ofthephysics program of the ATLAS experiment, which is one of the experiments at theLHC. The b-quarks produced in the hard scattering of the protons are measured asjets in the ATLAS detector. The aim of this PhD thesis is to study prospects of adifferential p b-jet cross section measurement in the jetp range ofp > 30GeV.T T TjetThis study is based onsimulated Monte Carlo(MC)dataassuming acenter-of-mass√energy of s= 10TeV.The trigger selection is based on a combination of single jet triggers consideringthe different prescale factors of the different jet triggers. The MC data samplescontain signal b-jets and background jets from other QCD physics processes in theproton-protoncollision.