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An operator basis translator for Standard Model effective field theory
Latest News13/03/2017 Rosetta 2.1 now available under "Downloads & Installation"! New release includes a beta version of the dihiggs interface and an implementation of the Higgs Pseudo Observable description compatible with the HiggsPO FeynRules/UFO model (see the HiggsPO webpage) About RosettaRosetta is a framework for translation between different bases of Standard Model (SM) Effective Field Theory (EFT) operators. It implements translations between a number of popular operator bases such as the so called Warsaw, SILH and Higgs (a.k.a BSM primaries) bases via a simple SLHA style input/output format. As such, it can readily be interfaced with existing HEP tools such as Monte Carlo event generators. In order to make this possible, Rosetta also contains a parametrisation called the 'BSM Characterisation Lagrangian' or 'bsmc' whose output SLHA card is designed to be compatible with a purpose-made FeynRules implementation that can be found at: http://feynrules.irmp.ucl.ac.be/wiki/BSMCharacterisation Another key feature of Rosetta is to allow users to easily define their own input bases. Implementing a translation from a user-created basis to any one of the core bases make translations available to all existing bases for which a translation is possible. This may be useful if a certain HEP tool for SM EFT assumes the use of a particular basis. Rosetta can provide access to the tool for users working in any other basis, widening the user base. Rosetta comes with an example of this in its eHDECAY interface for calculating the effect of EFT operators to the Higgs width and branching fractions. Much of Rosetta is based on the contents of the LHC Higgs Cross Section Working Group (draft) note on recommendations for Higgs EFT by the 'Higgs Properties' (WG2) subgroup. Full documentation for the program can be found in: arXiv:1508.05895 (Original paper) arXiv:1605.02684 (Contribution 18, p.158) Version History
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