Theory Group @ DESY, Zeuthen 
     Deutsches Elektronen-Synchrotron  
     Ein Forschungszentrum der Helmholtz-Gemeinschaft
     Platanenallee 6, 15738 Zeuthen, Germany


"Zwei Dinge erfüllen das Gemüth mit immer neuer und zunehmender Bewunderung und Ehrfurcht, je öfter und anhaltender sich das Nachdenken damit beschäftigt: der bestirnte Himmel über mir und das moralische Gesetz in mir.
Beide darf ich nicht als in Dunkelheiten verhüllt, oder im Überschwenglichen, außer meinem Gesichtskreise suchen und blos vermuthen; ich sehe sie vor mir und verknüpfe sie unmittelbar mit dem Bewusstsein meiner Existenz."
Immanuel Kant, Kritik der praktischen Vernunft, Beschluß (Riga 1788)

Sabine u. Tord  Riemann, NYC 2005

Dr. Tord Riemann



Prof. Dr. Albrecht Wagner: Note on occasion of Tord Riemann's 25 years of service at IfH/DESY on 1 March 2002 (in German)
Tord Riemann, CV Summary 2015
Tord Riemann, Curriculum Vita 2015
Tord Riemann, Publication 2015

The official webpage of the ZFITTER collaboration has changed in 2015:
The Report of the Ombuds-Kollegium of Hamburg University (17 November 2015) is available on justified request.

The Foundation for Polish Science has awarded to Tord Riemann the Alexander von Humboldt Polish Honorary Research Fellowship that will be carried out at University of Silesia in cooperation with the host prof. Janusz Gluza. Reference:>.



2006 - 2011: Vorlesungen zu "Theorie des Standardmodells und Colliderphysik" an der Universität Potsdam
Seit 2013: Vorlesungen zu "Theorie des Standardmodells und Colliderphysik" an der TU Dresden (TUD)
TUD, Wintersemester 2013/2014, siehe hier: 13/14.
TUD, Wintersemester 2014/2015, siehe hier: 14/15.
DESY, Zeuthen, Sommersemester 2016: "Selected Advanced Topics of the Electroweak Standard Model", on invitation

Conferences and Advanced Schools:

Member of Advisory Board
Co-organizing the bi-annual series

Scientific Fields of Interest:


spires search
eprint archive

Conference Talks and Lectures at Advanced Schools:

Talk by J. Gluza on the occasion of the 60th birthday of Tord Riemann, 23 June 2011, Zeuthen, Germany: "The Bhabha Project"
Talks before 2008: More Talks

Ph.D Students:

Diploma Students:

2014 First Prize of the Joint Institute for Nuclear Research, Dubna

for the best publication in PEPAN, "Physics of Elementary Particles and Nuclei",
as author of the paper "ZFITTER PROJECT", Physics of Particles and Nuclei, Volume 45, 2014, pp. 529-549, arxiv:1302.1395,
awarded by the Director of JINR and Editor-in-Chief of PEPAN, Academician of RAS Professor V.A. Matveev.

2001 First Prize of the Joint Institute for Nuclear Research, Dubna

awarded January 19, 2001 by the Scientific Council of the JINR Dubna for the project
"Theoretical support of experiments at the Z resonance on precision tests of the standard model (Project ZFITTER)"

An old story: LFV Z decays

Here you may find some references from the Eighties on flavor-nondiagonal Z-boson decays in the Standard Model (with massive, mixing neutrinos or top quarks in the loop).

Some Fortran programs:

I do not distribute software using this platform. In some cases you may find the programs of interest in the program repository of "Computer Physics Communications". Or you may contact me [or co-authors] directly, you are welcome!

  1. ZFITTER - A Program for the Semi-Analytic Calculation of Predictions for the Process e+e- -> 2f
    click here for the DESY ZFITTER home page.
    The earlier zfitter homepage has been relocated to See: The ZFITTER homepage (25 June 2014), DOI:10.3204/
    Since 2012, there is no institutional ZFITTER support. In case of need, please contact
    The last released version is ZFITTER v.6.43.
    Numerically, it is identical to ZFITTER v.6.42, distributed via the software deposit of "Computer Physics Communications".
    The actual version is ZFITTER v.6.44beta.
    For an overview see the article "The ZFITTER Project", in Physics of Particles and Nuclei, 2014, Vol. 45, No. 3, pp. 529-549. DOI: 10.1134/S1063779614030022. © Pleiades Publishing, Ltd., 2014
    Further information:
    Gfitter01: previous code version (DESY, Bereich High Energy Physics, 25 June 2013)
    Fall ZFITTER/Gfitter - Stellungnahme DESY Direktorium zum Fall ZFITTER/GFitter (Helmut Dosch, Christian Scherf, 22 March 2014) - Webpage of the ZFITTER Collaboration at JINR, Dubna, Russia

  2. topfit - A Program for the Semi-Analytic Calculation of Predictions for the Process e+e- -> t bar-t (+ photon)
    Authors: J. Fleischer, A. Leike, T. Riemann, A. Werthenbach
    preprint DESY 02-204, March 2003
    e-Print Archive: hep-ph/0302259
    Click here for the DESY, Zeuthen topfit homepage

  3. GENTLE/4fan - A Program for the Semi-Analytic Calculation of Predictions for the Process e+e- -> 4f
    Authors: D. Bardin, J. Biebel, D. Lehner, A. Leike, A. Olchevski, T. Riemann
    Published in Comput. Phys. Commun. 104 (1997) 161-187
    preprint DESY 96-233, December 1996
    e-Print Archive: hep-ph/9612409
    Click here for the DESY, Zeuthen GENTLE homepage:
    See also for J. Biebel's project ZAC on anomalous ZZZ and ZZA couplings in the Process e+e- -> 4f

  4. Predictions for Anomalous tau+ tau- gamma Production at LEP 1
    Authors: Jochen Biebel and Tord Riemann
    Published in Z. Phys. C76 (1997) 53-58
    preprint DESY 96-212, October 1996, 13pp.
    e-Print Archive: hep-ph/9610437
    Click here for the program: anotau.f

  5. HECTOR 1.00 - A program for the calculation of QED, QCD and electroweak corrections to ep and lN deep inelastic neutral and charged current scattering
    Authors: A. Arbuzov, D. Bardin, J.Bluemlein, P. Christova, L. Kalinovskaya, T. Riemann
    Picture (Caution: 1.9 Mb!)
    click here for the DESY, Zeuthen HECTOR home page
    Comput. Phys. Commun. 94 (1996) 128-184, hep-ph/9511434 DESY 95-185
    Source code
    Additional applications are possible with v.1.11; see:
    DESY 96-189 (spin physics)
    DESY 96-213 (tagged photons)
    New beta version of the source code

  6. SMATASY: a program for the model independent description of the Z resonance
    Authors since version 5.02: Martin Gruenewald, Stefan Kirsch and Tord Riemann
    Preprint DESY 94-125 [hep-ph/9408365];
    Preprint publ. in Comput. Phys. Commun. 88 (1995) 89
    Find here version 6.10 (15 May 1999), running with ZFITTER v.6.10:
    This version runs together with ZFITTER_beta (Feb 1997), click here: zfitr_beta_02_1997.uu
    SMATASY (May 1998) runs together with ZFITTER v. 5_1 (March 1998), click here: smata5_10.fortran and here: zfitr_beta_02_1997.uu
    The SMATASY code may be found here. In March 2000, the last one is here.

Guest homepage of Prof. Jochem Fleischer at DESY: JF
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Tord Riemann, Last modified: February 2016