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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

slide4

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

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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”
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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

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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)

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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)
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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
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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
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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
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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