Changes between Version 28 and Version 29 of SMEFT
 Timestamp:
 09/17/17 21:27:28 (2 years ago)
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SMEFT
v28 v29 16 16 17 17 18 The SMEFT is constructed out of a series of SU(3),,C,, × SU(2),,L,, × U(1),,Y,, invariant (local and analytic) higher dimensional operators L,,6,,, L,,7,,, ... built out of the SM fields. 18 The SMEFT is constructed out of a series of SU(3),,C,, × SU(2),,L,, × U(1),,Y,, invariant (local and analytic) higher dimensional operators L,,6,,, L,,7,,, ... built out of the SM fields.[[BR]] 19 19 The SMEFTsim package provides a complete implementation of the dimension6 Lagrangian adopting the Warsaw basis [https://arxiv.org/abs/1008.4884] 20 20 21 The SM Lagrangian is extended with the inclusion of the complete set of baryonnumberconserving operators of the Warsaw basis and of the SM loopinduced Higgs couplings to gg, γγ and Zγ. 21 The SM Lagrangian is extended with the inclusion of the complete set of baryonnumberconserving operators of the Warsaw basis and of the SM loopinduced Higgs couplings to gg, γγ and Zγ. [[BR]] 22 22 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. 23 23 … … 27 27 The flavor symmetry assumptions adopted are (see [https://arxiv.org/abs/1709.xxxxx] for a detailed description) 28 28 * The flavour general case 29 * The U(3)^ 5flavor symmetric case, with possible nonSM CPviolating phases29 * The U(3)^{5} flavor symmetric case, with possible nonSM CPviolating phases 30 30 * A linear Minimal flavor violation (MFV) ansatz, in which nonSM CPviolating effects are neglected, but flavorviolation spurion insertions are allowed in quark currents 31 31 … … 34 34 * m,,W,, scheme: {m,,W,,, m,,Z,, , G,,f,,} 35 35 36 Two independent sets (A and B) are supplied. Each set contains a main file, a number of subroutines and restriction files. 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]] 37 38 Preexported UFO files to be interfaced with MadGraph5_aMC@NLO can also be downloaded on this page (see Table below). 38 39 39 Note that 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.40 40 41 41 We appreciate if you could report us any inconsistency or bugs. … … 47 47 In this spirit, it has not been optimized for loop calculations in the SM or in the SMEFT. In particular: 48 48 49 * the Lagrangian assumes unitary gauge. Using it in R,, xior Feynman gauge may lead to inconsistent results, as the ghost Lagrangian have not been modified to account for L,,6 corrections.49 * 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 50 51 51 * the UFO files are not suitable for NLO evaluation in MadGraph5_aMC@NLO