Changes between Version 43 and Version 44 of SMEFT


Ignore:
Timestamp:
09/19/17 18:59:54 (2 years ago)
Author:
YunJiang
Comment:

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  • SMEFT

    v43 v44  
    1616
    1717
    18 The Standard Model Effective Field Theory (SMEFT) is constructed out of a series of SU(3),,C,, × SU(2),,L,, × U(1),,Y,, invariant higher dimensional operators L,,6,,, L,,7,,, ... built out of the SM fields.[[BR]]
     18The Standard Model Effective Field Theory (SMEFT) is constructed out of a series of SU(3),,C,, × SU(2),,L,, × U(1),,Y,, invariant higher dimensional operators L^(6)^, L^(7)^, ... built out of the SM fields.[[BR]]
    1919The SMEFTsim package provides a complete implementation of the lepton and baryon number conserving dimension-6 Lagrangian adopting the Warsaw basis [https://arxiv.org/abs/1008.4884/ arXiv:1008.4884]
    2020
     
    2222
    2323
    24 The SMEFTsim package provides implementations for 3 different flavor assumptions and 2 input scheme choices, for a total of 6 different models.
     24The SMEFTsim package provides implementations for 3 different flavor symmetry assumptions and 2 input scheme choices.
    2525
    26 The flavor assumptions adopted are (see [https://arxiv.org/abs/1709.xxxxx/ arXiv:1709.xxxxx] for a detailed description)
     26The flavor symmetry assumptions adopted are (see [https://arxiv.org/abs/1709.xxxxx/ arXiv:1709.xxxxx] for a detailed description)
    2727* The flavour general case
    28 * The U(3)^5^ flavor symmetric case, with possible non-SM CP-violating phases
     28* The U(3)^5^ flavor symmetric case, with non-SM CP-violating phases
    2929* 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
    3030
    3131For each model it is possible to choose between two input parameters sets for the electroweak sector, namely:
    32 * α scheme: {α,,em,,, m,,Z,, , G,,f,,}
     32* α scheme: {α,,ew,,, m,,Z,, , G,,f,,}
    3333* m,,W,, scheme: {m,,W,,, m,,Z,, , G,,f,,}
    3434
     
    3636
    3737Two independent models sets (A and B) are supplied. Each set contains a main file, a number of subroutines and restriction files.
    38 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]]
     38The 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]]
    3939Pre-exported UFO files to be interfaced with MadGraph5_aMC@NLO can also be downloaded from this page (see Table below).
    4040
     
    4848In this spirit, it has not been optimized for loop calculations in the SM or in the SMEFT. In particular:
    4949
    50 * the Lagrangian assumes unitary gauge. Using it in R,,xi,, or Feynman gauge may lead to inconsistent results, as the ghost Lagrangian have not been modified to account for L,,6 corrections.
     50* the Lagrangian assumes unitary gauge. Using it in R,,ξ,, or Feynman gauge may lead to inconsistent results, as the ghost Lagrangian have not been modified to account for L^(6)^ corrections.
    5151
    52 * the UFO files are not suitable for NLO evaluation in MadGraph5_aMC@NLO
     52* the UFO files are not equipped for NLO evaluation in MadGraph5_aMC@NLO
    5353
    5454
    5555== Change log ==
    5656
    57 v1.0 (17.09.2017) The first version released
     57v1.0 (20.09.2017) The first version released
    5858
    5959== References ==