Changes between Version 102 and Version 103 of SMEFT


Ignore:
Timestamp:
Jan 1, 2021, 6:18:59 PM (4 years ago)
Author:
Ilaria Brivio
Comment:

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  • SMEFT

    v102 v103  
    1111''NBIA and Discovery Center, Niels Bohr Institute, University of Copenhagen''
    1212
     13
     14== References ==
     15
     16* I. Brivio, Y. Jiang and M. Trott, ''The SMEFTsim package, theory and tools'', JHEP **1712** (2017) 070 [https://arxiv.org/abs/1709.06492/ arXiv:1709.06492]
     17
     18* I. Brivio, "SMEFTsim 3.0 -- a practical guide". [https://arxiv.org/abs/2012.11343 arXiv:2012.11343]
     19
    1320----
    1421
    … …  
    2128
    2229
    23 The SMEFTsim package provides implementations for 3 different flavor symmetry assumptions and 2 input scheme choices.
     30The SMEFTsim package provides implementations for 5 different flavor symmetry assumptions and 2 input scheme choices.
    2431
    25 The flavor symmetry assumptions adopted are (see [https://arxiv.org/abs/1709.06492/ arXiv:1709.06492] for a detailed description)
     32The flavor symmetry assumptions adopted are (see [https://arxiv.org/abs/2012.11343 arxiv:2012.11343] for a detailed description)
    2633* The flavour general case
    2734* The U(3)^5^ flavor symmetric case, with non-SM CP-violating phases
    2835* A linear Minimal flavor violation (MFV) ansatz [https://arxiv.org/abs/hep-ph/0207036/ arXiv:0207036], in which non-SM CP-violating effects are neglected, but linear flavor-violating spurion insertions are allowed in quark currents
     36* A case with a U(2)^3^ symmetry in the quark sector and U(1)^3^ symmetry in the lepton sector, following the baseline recommendations of [http://arxiv.org/abs/1802.07237 arXiv:1802.07237] for top quark physics
     37* A case with a U(2)^3^ symmetry in the quark sector and a U(3)^2^ symmetry in the lepton sector.
    2938
    3039For each model it is free to choose between two input parameters sets for the electroweak sector, namely:
    … …  
    3241* m,,W,, scheme: {m,,W,,, m,,Z,, , G,,f,,}
    3342
    34 Importantly, field rotations required to have canonically normalized kinetic terms and parameter redefinitions following from the choice of an input parameters set are automatically applied in the Lagrangian.
     43Field rotations required to have canonically normalized kinetic terms and parameter redefinitions following from the choice of an input parameters set are automatically applied in the Lagrangian.
     44Pre-exported UFO files to be interfaced with MadGraph5_aMC@NLO can be downloaded from this page.
    3545
    36 Two independent models sets (A and B) are supplied. Each set contains a main file, a number of subroutines and restriction files.
    37 The two sets differ in the structure and in the technical implementation of L^(6)^, but they produce consistent results. The use of both sets is recommended for debugging and validation of the numerical results.[[BR]]
    38 Pre-exported UFO files to be interfaced with MadGraph5_aMC@NLO can also be downloaded from this page (see Table below).
    39 
    40 
    41 We would appreciate if you could report to us any inconsistency or bugs.
    4246
    4347
    … …  
    5256
    5357
     58Numerical files in the WCxf format ([https://arxiv.org/abs/1712.05298  arXiv:1712.05298], https://wcxf.github.io) can be translated into a param_card for SMEFTsim using the dedicated command-line script now available in the WCxf package.
    5459
    55 Numerical files in the WCxf format (https://wcxf.github.io) can be translated into a param_card for SMEFTsim using the dedicated command-line script now available in the WCxf package.
     60
     61
     62== Latest release ==
     63
     64SMEFTsim version 3 has been released in December 2020.
     65The source code and UFO models are currently hosted on https://github.com/SMEFTsim/SMEFTsim.
     66The complete documentation and release notes can be found on the website https://smeftsim.github.io/
     67
     68A copy of the latest version of the UFO models is made available on this page, as part of the FeynRules database.
     69
     70For questions, bug reports and feature requests, please submit a GitHub issue at https://github.com/SMEFTsim/SMEFTsim/issues
     71
     72
     73
     74A detailed list of changes made in v3.0 is provided in the associated scientific publication. The main updates are:
     75
     76- two new flavor assumptions have been added, called top and topU3l, that follow the recommendations for the study of top quark processes.
     77- a new feature has been implemented, that allows the inclusion of linearized SMEFT corrections in the propagators of the W,Z,h bosons and of the top quark.
     78- the description of the SM Higgs-gluon vertices in the heavy-top EFT has been substantially improved with a full matching up to d=7.
     79- the parameterization of Wilson coefficients has been moved from Abs/Ph to Re/Im.
     80- all interaction vertices are included in the UFO models.
     81- more interaction orders have been added to the UFO models, in order to provide more control on each class of EFT contributions.
     82
     83
     84
     85----
     86
     87== Older releases ==
     88
     89Up to version v2.1, two independent models sets (A and B) were supplied.
     90
     91Each set contains a main file, a number of subroutines and restriction files.
     92The two sets differ in the structure and in the technical implementation of L^(6)^, but they produce consistent results. The use of both sets was recommended for debugging and validation of the numerical results.[[BR]]
     93
     94Starting from version v3.0 only one set of models is provided, based on the older set A.
     95
    5696
    5797
    5898'''Related bugs and threads'''
    5999
    60 The most recent version of SMEFTsim requires MadGraph5_aMC@NLO v2.6.1.  [[BR]]
     100SMEFTsim requires MadGraph5_aMC@NLO v2.6.1.  [[BR]]
    61101If still experiencing errors, please refer to the following threads or contact us.
    62102
    … …  
    66106
    67107
     108'''Change log'''
    68109
    69 == Change log ==
    70110
    71111'' Note that the version number adopted in two model Sets is independent.''
    72112
    73113'''
    74 NEW v3.0'''  (22.12.2020)  download from https://github.com/SMEFTsim
    75114
    76115set A - v2.1 (14.12.2018)
    … …  
    110149
    111150
    112 == References ==
    113 
    114 * I. Brivio, Y. Jiang and M. Trott, ''The SMEFTsim package, theory and tools'', JHEP **1712** (2017) 070 [https://arxiv.org/abs/1709.06492/ arXiv:1709.06492]
    115 
    116 * J. Aebischer, I. Brivio, A. Celis, J. Evans, Y. Jiang, J. Kumar, X. Pan, W. Porod, J. Rosiek, D. Shih, F. Staub, D. Straub, D. Dyk, A. Vicente, ''WCxf: an exchange format for Wilson coefficients beyond the Standard Model'', arXiv:1712.05298
    117 
    118151----
    119152
    120 '''Model Set A'''
     153''' FeynRules source code'''
     154
     155''Model Set A''
    121156
    122157* [attachment:"SMEFTsim-setA-v2.1.tar.gz"] This archive contains all the FeynRules files.
    123158* [attachment:"SMEFTsim-setA.nb"] Example of a Mathematica® notebook loading the model
    124159
    125 '''Model Set B''
     160''Model Set B''
    126161
    127162In the master code two flags are established: __Scheme__ and __Flavor__, which are used to identify the input scheme and flavor assumption being adopted in loading the model.
    … …  
    132167----
    133168
    134 == Pre-exported UFO files (include restriction cards) ==
     169'''Pre-exported UFO files (include restriction cards)'''
    135170 
    136171||                          ||    Set A  ||  || Set B (v 1.3)|| ||