Changes between Version 2 and Version 3 of FourFermionttll
- Timestamp:
- Jan 25, 2022, 11:40:32 PM (3 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
FourFermionttll
v2 v3 49 49 set fVll ... 50 50 }}} 51 For the scenario of vector coupling, interference with the SM should be considered. This can be done by changing the coupling order in the generation commands:52 {{{53 ...54 generate p p > mu+ mu- t t~ NP^2==255 add process p p > mu+ mu- t t~ j NP^2==256 ...57 }}}58 51 59 52 Where lambdas is the scale of new physics in GeV, fSrr is the coupling of the t-u-l-l scalar operator with right-right chirality of the fermions, etc. For example, if we set fSrr=1 and all other couplings to 0, we get a scalar operator with: … … 64 57 \end{align*} 65 58 }}} 66 59 For the scenario of vector coupling, interference with the SM should be considered. This can be done by changing the coupling order in the generation commands: 60 {{{ 61 ... 62 generate p p > mu+ mu- t t~ NP^2==2 63 add process p p > mu+ mu- t t~ j NP^2==2 64 ... 65 }}} 66 Both the interference and pure NP contributions can be generated together with: 67 {{{ 68 ... 69 generate p p > mu+ mu- t t~ NP^2>0 70 add process p p > mu+ mu- t t~ j NP^2>0 71 ... 72 }}} 67 73 68 74 Note that only operators with the couplings fSrr, fTrr, fVlr, fVrl, fVrr, fVll are generated by this UFO.
