OPUCEM - Oblique Parameters Using C with Error-checking Machinery
OPUCEM (pronounced ö-peu-gem, with o-umlaut as in French deux) is a C library which combines
formulas from a multitude of references for calculating Peskin-Takeuchi parameters S-T-U. The aim is to provide a
minimum-dependence code to facilitate the sharing of formulas, such that:
We aim to provide extra test functions in our library that does the cross-checking of different formulas - against approximation, against other calculations of the same quantities or against limiting cases of other quantities.
Currently implemented are:
References for the current code include:
Example driver code to use the library, tools for plotting ST ellipses and (extensive) internal documentation are provided as well. The latest stable tag is opucem-00-00-08.
For a review of OPUCEM and an example of its application, see the talk
given at the Second Workshop on Beyond 3 Generation Standard Model in Taipei. You might also have a look at our
If you use OPUCEM or its results,
* please cite the reference paper: Computer Physics Communications 182 (2011), pp. 1732-1743 .
* Erkcan Ozcan, University College London - Now at Bogazici University
* Gokhan Unel, University of California, Irvine
emails: name.surname at cern dot ch
Ozgur Cobanoglu, CERN - Now at Sanko (main author of the GUI), Mehmet Sahin, TOBB ETU (5+ generations in the GUI), Emre Celebi, Bogazici University (2HDM in the GUI and cross-checks)
Special thanks to: R. Michael Winters & Deva O'Neil, College of Wooster (Mathematica code for the ST ellipses)