News
- Jul 2026 New Gfitter publication: The Higgs boson through the lens of electroweak precision data – link to publication
- 2026 Gfitter was used for the global electroweak fit in Chapter 10 (Electroweak model and constraints on new physics) of the PDG Review of Particle Physics – Int. J. Mod. Phys. A 41, 2630011 (2026)
- Aug 2018
Gfitter figure on front cover of European Physical Journal C!
- Mar 2018 Update of the global electroweak fit and constraints on two-Higgs-doublet models – link to publication
- Oct 2016 Version 2.2 of the Gfitter software released, supports ROOT6 and Mac OS X
Introduction
The generic fitting package Gfitter comprises a framework for the statistical analysis of parameter estimation problems in HEP. It is specifically designed to provide a user-friendly environment for involved fitting problems, such as the global Standard Model fit to electroweak precision data. During its development, it was found that Gfitter is also a convenient framework for averaging problems, ranging from simple weighted means using or not correlated input data, to more involved problems with common systematic errors, requiring or not parameter rescaling.
How to cite
If you use results or figures from Gfitter, please cite our latest publication:
Y. Fischer, J. Haller, A. Hoecker, R. Kogler, F. Labe, K. Mönig, D. Schwarz, J. Stelzer,
The Higgs boson through the lens of electroweak precision data,
arXiv:2607.09861 [hep-ph],
DESY-26-089, submitted to Eur. Phys. J. C.
INSPIRE record · BibTeX · DOI · all publications
The Gfitter Group
The Gfitter group are:
- Yannick Fischer (U. Hamburg, Germany)
- Johannes Haller (U. Hamburg, Germany)
- Andreas Hoecker (CERN, Switzerland)
- Roman Kogler (DESY, Germany)
- Finn Labe (DESY, Germany)
- Klaus Mönig (DESY, Germany)
- Dennis Schwarz (DESY, Germany)
- Jörg Stelzer (U. Pittsburgh, PA, USA)
Contact
For general enquiries about Gfitter, please write to gfitter-group@cern.ch, or contact any member of the group directly using the addresses above.