CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 Theory: Projects and Funding

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 TTP (Institut für Theoretische Teilchenphysik) J. H Kühn M. Steinhauser (since , 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

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004

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

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004

DFG-Forschergruppe “Quantum Field Theory, Computer Algebra, Monte Carlo Simulation”( ) SFB-TR/9 “Computational Particle Physics” ( ) BMBF-Verbundforschung “High Energy Reactions at Lepton- and Hadron Colliders” EU-Projects EURIDICE (network) Marie Curie Training Site ( ) Emmy Noether Group: Higgs Phenomenology HGF-Nachwuchsgruppe “High-Precision Analysis of Top Quark Properties at TESLA”

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 Karlsruhe Collaborations RWTH Aachen Humboldt Univ. Berlin DESY-Zeuthen DESY–Hamburg Hamburg Univ. Frascati Bologna Brookhaven Canada NIKHEF (Amsterdam) Sendai KEK Barcelona Valencia Kattowice Krakau Russ. Acad. of Science Moscow Univ.

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 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) Theoretical concepts and calculational tools

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 Precision Calculations

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 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)

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 collider physics (LHC and ILC) determination of  s and quark masses m c = 1304  27 MeV m b = 4209  50 MeV further reduction of error by factor 2-3 Evaluation ofR =  (e + e -  had)/  p+ in O(  s 4 ) under way GIGA-Z   s < 0.001

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 weak interactions in two loop (with Hollik) G F  top : weak and strong effects combined  m t  500 MeV;  m H  O(5 GeV)+O(0.5 GeV) weak interactions at high energies Sudakov logarithms  (f 1 f 2  f 3 f 4 ) in N 3 Leading log ff  W + W - qq  gluon + Z Interplay of QCD and electroweak interactions

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 NRQCD effective theories QCD potential bb bound states top quarks at threshold and in the continuum radiative return at DA  NE 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

CETA Advisory Board Meeting No.1 Johann Kühn Dec. 20, 2004 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