Changes between Version 27 and Version 28 of SMEFTatNLO


Ignore:
Timestamp:
Apr 12, 2021, 6:33:09 PM (4 years ago)
Author:
gdurieux
Comment:

point to the new 3.1.X series

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  • SMEFTatNLO

    v27 v28  
    4444
    4545
    46 The {{{3.0.4}}} nightly build branch of MG (bzr branch lp:~maddevelopers/mg5amcnlo/3.0.4) is required for one-loop predictions involving four-quark operators and (in general) H^2^G^2^ with coefficient {{{cpG}}} not normalised with any power of g,,S,,.
     46The {{{3.1.X}}} series of MG is required for one-loop predictions involving four-quark operators and (in general) H^2^G^2^ with coefficient {{{cpG}}} not normalised with any power of g,,S,,.
    4747It also allows for a better control over coupling orders and, in particular, for the separate computation of linear and quadratic EFT contributions at NLO.
    48 It is however only available for fixed order computations (i.e. not for event generation, with {{{fixed_order = ON}}}).
    49 Sufficiently coarse differential distributions can be obtained by implementing a !FixedOrderAnalysis in Fortran (see examples in the corresponding subdirectory).
    50 A branch allowing for the separate computation of different orders in event-generation mode (with matching to parton shower) is currently being validated.
    51 
    52 The 2.X.X series of MadGraph5_aMC@NLO should be used for event generation (i.e. beyond fixed-order computations).
     48
     49The {{{2.X.X}}} series of MadGraph5_aMC@NLO should be used for event generation (i.e. beyond fixed-order computations).
    5350It can however not handle four-quark operators at one-loop.
    5451The model should in that case be loaded with the {{{no4q}}} restriction card (doing {{{import model SMEFTatNLO-no4q}}}) which excludes four-quark operator coefficients.
    55 An exception is single top-quark production in which the colour singlet {{{cQq13}}} and and octet {{{cQq83}}} are available in 2.X.X.
     52An exception is single top-quark production in which the colour singlet {{{cQq13}}} and and octet {{{cQq83}}} are available in {{{2.X.X}}}.
    5653For the latter, see however the specific instructions below about "loop filtering".
    5754