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CMS Experiment: Compact Muon Solenoid

CMS Experiment: Compact Muon Solenoid. 38 Nations 171 Institutes 2250 Physicists. German groups: D-CMS RWTH Aachen Uni. Karlsruhe Uni. Hamburg New: DESY (Dec. 05). Growth in 2005: 16 new Institutes. Multi-purpose detector 4Tesla, large coil all Si- track detecktor

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CMS Experiment: Compact Muon Solenoid

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  1. CMS Experiment: Compact Muon Solenoid 38 Nations 171 Institutes 2250 Physicists • German groups: D-CMS • RWTH Aachen • Uni. Karlsruhe • Uni. Hamburg • New: DESY (Dec. 05) Growth in 2005: 16 new Institutes • Multi-purpose detector • 4Tesla, large coil • all Si- track detecktor • electro. Crystal calor. • … • Goals: • Discovery of • Higgs (if ex.) • Supersymmetrie (if ex.), … Currently: heavy work on Physics TDR  to appear end 2006 Peter Schleper DESY, 9.2.2005 1

  2. CMS Group at Hamburg University DESY: existing group (J.Mnich): focus on SM physics • Here: only Hamburg University ! • Member of CMS since early 2004: • Robert Klanner, Peter Schleper (before: ZEUS at HERA) • Georg Steinbrück (beforeD0 at Tevatron), Gero Flucke (before H1 at HERA) • Phd: Markus Stoye, Florian Bechtel, Eric Butz (soon), Diplomanden • + ZEUS group + detector group • Contributions to CMS: • Detector building: • Silicon strip detector for charged particles • high precision, momentum measurement up to ~ 1 TeV • in future: development of pixel detecotr for vertex measurements • Detector-oriented analysen: • Alignment: determination of detector geometry with charged tracks • important at large momenta Peter Schleper DESY, 9.2.2005 2

  3. Physics Analysis Aim: Supersymmetrie(Diploma thesis) Up to now: GMSB with s-tau as NLSP Squark-Gluino decay chaines slepton pair production, Gaugino pairproduction Separation w.r.t. SM (top) background tau-reconstruction, QCD background Discovery potential for Msquark up to 3 TeV LHC 100 events S-LHC Also: Z‘ analysis Lepton pairs at large momenta (by-product of alignment) Peter Schleper DESY, 9.2.2005 3

  4. SM monitor processes and detector monitoring Myon System Elec.-Cal Hadr.-Cal Tracking µ e, b,tau Jets, ET ETmiss Z ll W lν  + jet W + jet top underlying event QCD • Standard Modell Processes: • calibration and efficiencies of detector components • background for all searches • experimental and theoretical preparation ? Peter Schleper DESY, 9.2.2005 4

  5. Collaborations DESY – University  within CMS very useful collaboration already now Hamburg – Aachen – Karlsruhe  technical expertise for CMS data anlysis, computing, … KET initiative for theory – experiment cross  BSM workshop in May Theory – experiment collaboration (DESY + Uni.) :  Standard Modell calculations, uncertainties  definition of first day observables  generators  SUSY parameter determinations / scans  ….. wanted ! Peter Schleper DESY, 9.2.2005 5

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