XQCAT - eXtra Quark Combined Analysis Tool - is a tool able to determine exclusion Confidence Levels (eCLs) for scenarios of new physics characterised by the presence of one or multiple heavy extra quarks with generic couplings to Standard Model states.
What’s new in v1.3: removed dependence from ROOT in the limit code
The code relies on a database of efficiencies for pre-simulated processes of QCD pair production and on-shell decays of extra quarks: in the version 1.x of XQCAT the efficiencies have been computed for a determined set of publicly available experimental searches. In the first version the implemented searches are all by CMS: a search for a vector-like t-prime and four SUSY-inspired searches in final states with jets, missing transverse energy and a variable number of leptons, both at 7 and 8 TeV, and they are subject to future updates, to include the largest possible number of public experimental data by both ATLAS and CMS. The code accepts as input text files in which masses, Branching Ratios (BRs) and information on the representation under SU(2) of the new quarks (i.e. on the dominant chirality of the couplings) are provided, and gives as output the eCL of the test point for each implemented experimental analysis considered individually and, when possible, in statistical combination.
Authors: D. Barducci, A. Belyaev, M. Buchkremer, G. Cacciapaglia, A. Deandrea, S. De Curtis, J. Marrouche, S. Moretti and L. Panizzi
JHEP 1412 (2014) 080, arXiv:1405.0737 [hep-ph] (phenomenological analysis)
arXiv:1409:3116 [hep-ph] (manual of the code)