Changes between Version 14 and Version 15 of Top-Philic-Zprime


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Timestamp:
Jul 24, 2018, 2:19:23 AM (6 years ago)
Author:
Jeong Han Kim
Comment:

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  • Top-Philic-Zprime

    v14 v15  
    1919
    2020== Description of the model ==
    21 We consider a color singlet vector particle (V,,1,,) which dominantly couples to top and anti-top. Assuming that all other interactions are weak, the relevant interaction is given by the following renormalizable Lagrangian
     21We consider a color singlet vector particle (''V,,1,,'') which dominantly couples to top and anti-top. Assuming that all other interactions are weak, the relevant interaction is given by the following renormalizable Lagrangian
    2222
    2323[[Image(Lag3.pdf)]]
    2424
    25 where P,,L,, (P,,R,,) is a left (right)-handed projection operator. There are three free parameters, the vector resonance mass (Mv1), the overall coupling strength (ct1) and the chirality angle (theta1).
     25where ''P,,L,,'' (''P,,R,,'') is a left (right)-handed projection operator. There are three free parameters, the vector resonance mass (''M,,V1,,''), the overall coupling strength (''c,,t,,''), and the chirality angle (''θ'').
    2626
    2727== Model files ==
    28 * MDM.fr ​: the main model file.
     28* [attachment:Top_Philic.fr Top_Philic.fr ]: the main model file.
     29* [attachment:Top_Philic_UFO_gen.nb Top_Philic_UFO_gen.nb]: the Mathematica notebook to generate a UFO output, including basic Feynman rules and analytic expressions of the decay width of ''V,,1,,''. The notebook also generates a text script for a tree-level production of V,,1,, in a four-top final state (arXiv:1604.07421).
     30
     31* [attachment:Top_Philic_UFO.zip Top_Philic_UFO]: the UFO output.
     32
     33Notes:
     34
     35* There are three free parameters in the model：
     36 * ''ct1'': the overall coupling strength (''c,,t,,'')
     37 * ''theta1'': the chirality angle (''θ'')
     38 * ''Mv1'': the vector resonance mass (''M,,V1,,'')
     39
     40* Set the automatic width calculation: ''set param_card Wv1 Auto''.
     41* The syntax for the tree-level production of ''V,,1,,'' is given by: ''generate p p > t t~ v1/v1 , v1 > t t~''
    2942
    3043== References ==