Changes between Version 6 and Version 7 of ALPsEFT


Ignore:
Timestamp:
09/20/17 16:50:27 (2 years ago)
Author:
IlariaBrivio
Comment:

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  • ALPsEFT

    v6 v7  
    1818
    1919The Standard Model (SM) is extended with the inclusion of a generic CP-odd scalar field, that is a singlet under the SM gauge symmetries.
    20 This new field is assumed to be an Axion-Like-Particle, i.e. the (pseudo) Nambu-Goldstone boson of a spontaneously broken U(1) symmetry, associated with a heavy scale f,,,a,,,.
    21 As such, the ALP field respects an approximate shift symmetry that requires its couplings to the SM to be purely derivative and weighted by inverse powers of f,,a,,. Moreover, its mass must be much lighter than f,,a,,.
    22 These models assume the benchmark values f,,a,,= 1 TeV, m,,a,, = 1 MeV.
     20This new field is assumed to be an Axion-Like-Particle, i.e. the (pseudo) Nambu-Goldstone boson of a spontaneously broken U(1) symmetry, associated with a heavy scale f,,a,,.
     21As such, the ALP field respects an approximate shift symmetry that requires its couplings to be purely derivative and weighted by inverse powers of f,,a,,. Moreover, its mass must be much lighter than f,,a,,.
     22The models supplied here assume the benchmark values f,,a,,= 1 TeV, m,,a,, = 1 MeV.
    2323
    2424