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Theory: Projects and Funding. TTP (Institut für Theoretische Teilchenphysik). J. H Kühn M. Steinhauser (since 1.10.2004, replacement of H. M. Staudenmaier) N.N. (replacement of Th. Mannel) Emmy Noether Group: R. Harlander
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TTP (Institut für Theoretische Teilchenphysik) J. H Kühn M. Steinhauser (since 1.10.2004, replacement of H. M. Staudenmaier) N.N. (replacement of Th. Mannel) Emmy Noether Group: R. Harlander TTP + ITP : 5 tenured positions Limited resources, concentrated mainly in phenomenological particle physics
TTP: 3 postdocs funded by university 8 postdocs funded by DFG 1 (+1) postdocs funded by BMBF 6 PhD students 6 diploma students 2 – 4 long term guests
DFG-Forschergruppe • “Quantum Field Theory, Computer Algebra, • Monte Carlo Simulation”(1996-2003) • SFB-TR/9 • “Computational Particle Physics” (2003-2006-2010-2014) • BMBF-Verbundforschung • “High Energy Reactions at Lepton- and Hadron Colliders” • EU-Projects • EURIDICE (network) • Marie Curie Training Site (2001-2003) • Emmy Noether Group: • Higgs Phenomenology • HGF-Nachwuchsgruppe • “High-Precision Analysis of Top Quark Properties at TESLA”
Canada NIKHEF (Amsterdam) Humboldt Univ. Berlin DESY-Zeuthen Brookhaven RWTH Aachen Russ. Acad. of Science Moscow Univ. Sendai KEK Kattowice Krakau Karlsruhe Barcelona Valencia DESY–Hamburg Hamburg Univ. Frascati Bologna Collaborations
Theoretical concepts and calculational tools Improved understanding and new formulations of the fundamental laws of nature Interpretation of current and future experiments Large scale computing, computer algebra, parallel computing (one of the first SGI 32-processor ITANIUM-SMP machines in Germany)
conceptual developments: • multiloops (Chetyrkin) • 4-loop massive tadpole amplitudes • 4-loop massless propagator amplitudes • large demand on computer algebra • SUSY and renormalization • Computer algebra and parallelisation (PARFORM)
collider physics (LHC and ILC) • determination of s and quark masses • mc = 1304 27 MeV • mb = 4209 50 MeV • further reduction of error by factor 2-3 • Evaluation of R = (e+e-had)/p+ in O(s4) under way • GIGA-Z s < 0.001
weak interactions in two loop (with Hollik) • GF • top: weak and strong effects combined • mt 500 MeV; mH O(5 GeV)+O(0.5 GeV) • weak interactions at high energies • Sudakov logarithms • (f1f2 f3f4 ) in N3 Leading log • ff W+W- • qq gluon + Z • Interplay of QCD and electroweak interactions
NRQCD • effective theories • QCD potential • bb bound states • top quarks at threshold and in the continuum • radiative return at DANE and B-factories • R at low energies • phenomenology of Higgs bosons (Harlander) • (pp H+X) in NNLO • SUSY: virtual s-quarks and gluinos • Higgs mass relations in the MSSM
With the help of Research staff: Kostia Chetyrkin, Dolores Eiras, Robert Harlander, Anna Kulesza, Luminita Mihaila, Alexander Penin, Stefano Pozzorini, Mikhail Tentioukov, Marcus Weber PhD Students: Stefan Bekavac, Michael Faisst, Bernd Feucht, Michael Kraetz, Jan Piclum, Christian Sturm Diploma Students: Franziska Hofmann, Falk Metzler, Philipp Oter, Andreas Scharf, Markus Schulze, Tobias Selz Long Term Guests: Pavel Baikov, Henryk Czyz, Andrey Grozin, Agnieszka Grzelinska, W.Marciano, Elzbieta Nowak, Ettore Remidi