Presentation on theme: "7/10/2004Erika Garutti1 The FLC Group (Future Linear Collider) oder ( Forschung an Lepton Collidern) Erika Garutti."— Presentation transcript:
7/10/2004Erika Garutti1 The FLC Group (Future Linear Collider) oder ( Forschung an Lepton Collidern) Erika Garutti
7/10/2004Erika Garutti2 Hardware development/construction and test of advanced high tech. detectors Software development of analysis programs and detector simulations Analysis analysis of experimental data What does a physicist do the whole day long?
7/10/2004Erika Garutti3 Hardware development/construction and test of advanced high tech. detectors Software development of analysis programs and detector simulations Analysis analysis of experimental data What does a physicist do the whole day long? need to understand simulation and hardware need to understand the physics to address need to understand the detector to simulate
7/10/2004Erika Garutti4 Hardware Build a detector for the ILC : the facility for the physics of the next 50 years max. Energy 500 – 800 GeV superconductive cavities High Luminosity 33 km long The ILC will be COLD!!!
7/10/2004Erika Garutti5 The TESLA detector
7/10/2004Erika Garutti6 Hardware New Physics implies: New requirements New technology New materials Tracking: Time Projection Chamber (TPC) Calorimetry: Hadronic Calorimeter (HCAL) TPC ECAL HCAL
7/10/2004Erika Garutti7 Time Projection Chamber Gas Electron Multiplier read out - large volume: 3.5m diameter - simpler mechanics compared to wire chamber - distance between holes ~ resolution (100 m) - easy 3D track reconstruction - low cost
7/10/2004Erika Garutti8 Time Projection Chamber -built and DESY -Next steps: resolution and tracking studies in 5T magnetic field with e- beam with laser system TPC DESY
7/10/2004Erika Garutti9 Hadronic Calorimeter First prototype already in DESY - high granularity: small tile size multiple layers -high number of channels -need of small and cheap photo-detectors for independent fiber read out new technology development
7/10/2004Erika Garutti10 Technology to the limit 1 mm 2 photo-detectors/1024 pixels Single photon signal High granularity small tiles channels read out for TESLA Pixels of the SiPM SiPM Silicon PhotoMultiplier (SiPM) MEPhI&PULSAR
7/10/2004Erika Garutti11 Software - Development of tracking software for TPC detector simulation - Development of energy reconstruction software for HCAL detector simulation - MC simulation of ILC detector: geometry detectors property detector studies
7/10/2004Erika Garutti12 If there is a Higgs: the main production mechanisms are: High energy WW fusion Low energy Higgs-strahlung In the channel: ZH → ZWW → 4jets ℓ ν Higgs physics at the ILC Understanding of mass generation Higgs couplings to bosons and fermions
7/10/2004Erika Garutti13 H Z e + e - Z * Higgs main production mechanism at the ILC: Higgs-strahlung process ZH X ZH qqbb ZH WW qq
7/10/2004Erika Garutti14 After the Higgs discovery (LHC?), the ILC will study: Cross section Quantum numbers Couplings CP violating conrib. to SM M=M ZH +i M ZA H WW bb BG: HZ bb g Hbb vs g HWW
7/10/2004Erika Garutti15 The Higgs potential ee ZHH 6 jets Is the Higgs the Higgs? Check = M 2 H /2v 2 few tens of events reconstruct observable from 3 dijet masses with LEP-like detector significance < 3
7/10/2004Erika Garutti16 WW/ZZ separation Dilution factor vs cut: integrated luminosity equivalent No Higgs scenario: WW scattering violates unitarity at ~1.2TeV, or new forces show up access EWSB mechanism from WW scattering analyze ee WW and ee ZZ channels need to separate ZZ background no kinematic fit possible due to the neutrinos We need a high resolution detector (a factor 2 better than LEP) OR we pay with luminosity (~40% more needed) ~(s/M W 2 ) 2 TESLA LEP
7/10/2004Erika Garutti17 Challenge: separate W and Z in their hadronic decay mode Dijet masses in WW, ZZ events (no kinematic fit possible): 40% more lumi is required for same resolution if =60% Jet energy resolution LEP-like detector LC design goal
7/10/2004Erika Garutti18 Super Symmetry (SUSY) Fundamental symmetry between Fermions and Bosons Doubles the number of existing particles Symmetry breaking no super-symmetric particle observed by now
7/10/2004Erika Garutti19 Start from the past to understand the future The OPAL experiment at LEP (CERN) Precision measurement of Z 0 / W Higgs search SUSY, search for new physics Topics covered at FLC: - heavy Quarks: backward-forward asymmetry b-fragmentation - Triple-gauge-boson coupling - Higgs search: double-charge Higgs bosons production - SUSY search: heavy stable charge particles - Technicolor search
7/10/2004Erika Garutti20 Start from the past to understand the future The H1 experiment at DESY Understand QCD and the proton structure Topics covered at FLC: - heavy Quarks production: b-fragmentation
7/10/2004Erika Garutti21 : a large & international group Group leader Prof. Dr. Rolf-Dieter Heuer (Uni HH) Dr. Ties Behnke (DESY) 8 wissenschaftliche Mitarbeiter (promoviert) 1 Hochschulassistent: Klaus Desch 1 DESY-Wissenschaftler: Felix Sefkow 8 DESY-Fellows: Steve Aplin, Karsten Buesser, E.G., Markus Hamann, Thorsten Kuhl, Roman Poeschl, Alexei Raspereza, Peter Wienemann 1 Gastwissenschaftler: Vasiliy Morgunov 10 Doktoranden Philip Bechtle, Filip Franco-Sollova, Marius Groll, Andreas Imhof, Tatsiana Klimkovich, Thomas Krämer, Thorsten Lux, Niels Meyer, Jorgen Samson, Blanka Sobloher 4 Diplomanden Markus Ball, Matthias Enno Janssen, Hendrik Meyer, Oliver Wendt
7/10/2004Erika Garutti22 ?!?! To know more about what YOU could FLC: Contact: Klaus Desch, Ties Behnke, Rolf Heuer, Felix Sefkow Surf: www-flc.desy.de in DESY-Telephone book (www.desy.de) Pass by: Building 1d There is a lot to be done for the physics of the future !!!