Changes between Version 12 and Version 13 of SMEFT
 Timestamp:
 09/14/17 20:13:53 (3 years ago)
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SMEFT
v12 v13 19 19 The SMEFTsim package is to provide a complete tool for the analysis of the tree level interference terms between the L,,6,, dependent amplitude and the SM amplitudes in a measured process. In this spirit, we stress that this package is neither to be employed for the extraction of accurate SM predictions nor equipped for NLO calculations in MadGraph5_aMC@NLO. 20 20 21 Two independent sets are supplied in the SMEFTsim package. Each one consists three different versions of the SMEFT based on the flavor symmetry assumption adopted: 21 The models are built upon the default SM implementation in FeynRules, from which they inherit the SM fields, parameters and Lagrangian definitions. The original file has been extended and modified to include the complete set of L,,6,, baryon number conserving operators of the Warsaw basis. The loopinduced effective couplings of SM Higgs to gg, γγ and Zγ have also been included. At this stage, the ghost Lagrangian has been left in its SM form. The entire parameter space of the L,,6,, SMEFT and the automatic inclusion of the shifts due to the choice of an input parameters set are implemented. 22 23 Two independent sets are supplied in the SMEFTsim package. Each set contains a single master code and a number of subroutines, along with several restriction files. The model file can be loaded in FeynRules using the notebook program, with the product of the UFOs. 24 Model files and preexported UFO files to be interfaced with MadGraph5_aMC@NLO can be downloaded on this page. 25 26 Each model set constructs three different versions of the SMEFT based on the flavor symmetry assumption adopted: 22 27 * a fully flavour general SMEFT 23 28 * a U(3)^5^ − SMEFT with nonSM complex phases 24 29 * Minimal flavor violation (MFV) SMEFT 25 30 26 The models are built upon the default SM implementation in FeynRules, from which they inherit the SM fields, parameters and Lagrangian definitions. The original file has been extended and modified to include the complete set of L,,6,, baryon number conserving operators of the Warsaw basis. The loopinduced effective couplings of SM Higgs to gg, γγ and Zγ have also been included. At this stage, the ghost Lagrangian has been left in its SM form. The entire parameter space of the L,,6,, SMEFT and the automatic inclusion of the shifts due to the choice of an input parameters set are implemented.31 In each model two different input schemes {α,,em,,, m,,Z,, , G,,f,, } and {m,,W,,, m,,Z,, , G,,f,, } are available. 27 32 28 Each set contains a single master code and a number of subroutines, along with several restriction files. 29 The model file can be loaded in FeynRules using the notebook program, with the product of the UFOs. 30 Model files and preexported UFO files to be interfaced with MadGraph5_aMC@NLO can be downloaded on this page. 33 34 Note that the two models sets differ in the structure and in the technical implementation of L,,6,,, but they produce equivalent results: the use of both sets is recommended for debugging and validation of the numerical results. We appreciate if you could report us any inconsistency or bugs. 31 35 32 36 … … 55 59 == UFO generated files == 56 60 57   Set A  Set B  58  Flavor general SMEFT    59  MFV SMEFT    60  U(3)^5^ SMEFT    61   Set A   Set B   62   α scheme  m,,W,, scheme  α scheme  m,,W,, scheme  63  Flavor general SMEFT      64  MFV SMEFT      65  U(3)^5^ SMEFT     