Search for second generation leptoquarks with ATLAS at the LHC [Elektronische Ressource] / vorgelegt von Gernot Krobath

Search for Second GenerationLeptoquarks with ATLAS at theLHCDissertation der Fakult¨at fur¨ PhysikderLudwig-Maximilians-Universit¨at Munc¨ henvorgelegt vonGernot Krobathgeboren in HeidelbergMunc¨ hen, den 18. Juli 20081. Gutachter: Prof. Dr. Dorothee Schaile2. Gutachter: Prof. Dr. Wolfgang Dunn¨ weberTag der mundlic¨ hen Prufung¨ : 24.09.2008AbstractThe Large Hadron Collider will collide protons with protons at a center-of-massenergy of up to 14 TeV. New physics phenomena and new particles are pre-dicted to be detectable with the ATLAS detector at the Large Hadron Collider.OneofthesepredictednewparticlesbeyondtheStandardModelareleptoquarks.This thesis deals with the search for scalar second generation leptoquarksproduced in pairs. Second generation leptoquarks decay into a muon-type leptonand a quark. In this thesis the decay of both second generation leptoquarks intoamuonandaquarkisconsidered. Sincepairproductionisstudiedthefinalstateconsists of two high-energetic muons and two high-energetic jets.Thisthesisstudiessecondgenerationleptoquarkswithmassesofm =300GeV,LQm =400GeV,m =600GeVandm =800GeV.