Changes between Version 16 and Version 17 of HeavyN


Ignore:
Timestamp:
02/22/16 15:29:20 (4 years ago)
Author:
richardphysics
Comment:

Including NLO information: References

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  • HeavyN

    v16 v17  
    11= SM + Heavy N at NLO in QCD =
    22
    3 ==== Implementation Author ====
     3=== Implementation Author ===
    44Richard Ruiz
    55* University of Durham (IPPP)
     
    77
    88In collaboration with
    9 Daniel Alva and Tao Han and
    10 .
     9Daniel Alva and Tao Han, and Celine Degrande, Olivier Mattelear, and Jessica Turner.
     10
    1111
    1212== Model Description ==
     
    4242}}}
    4343The mixing matrix elements V''lk'' parametrize the mixing between the (active) lepton flavor eigenstate ''l'' and the heavy mass eigenstate ''N''k that corresponds to mass mNk.
    44 The lepton number- and flavor-violating interactions of the model allow for modeling of the Type I, Inverse, and Linear seesaw mechanisms.
     44The lepton number- and flavor-violating interactions of the model allow for modeling of the Type I, Inverse, and Linear seesaw mechanisms at both electron, hadron, and e-p colliders.
    4545
    4646== QCD Corrections ==
    47 The above Lagrangian with Goldstone boson couplings and in the Feynman Gauge was implemented into FeynRules  2.3.10. QCD renormalization and R2 rational counter terms were determined using NLOCT 1.02 and FeynArts 3.8. Feynman rules were collected into a single UFO, available below. The UFO file, five massless quarks are assumed as are zero off-diagonal CKM matrix entries.
     47The above Lagrangian with Goldstone boson couplings and in the Feynman Gauge was implemented into FeynRules  2.3.10. QCD renormalization and R2 rational counter terms were determined using NLOCT 1.02 and FeynArts 3.8. Feynman rules were collected into a single UFO, available below.
     48In the UFO file, five massless quarks are assumed as are zero off-diagonal CKM matrix entries.
    4849For additional details, see [ [#Degrande 2] ] and references within.
     50These additions permit tree-level calculations at LO and NLO in QCD and loop-induced calculations at LO in QCD using MadGraph_aMC@NLO.
    4951
    5052
     
    6163
    6264
    63 
    64 
    65 Notes:
     65=== Notes ===
    6666 * To download any of the packages and unpack via the terminal, use the commands:
    6767
     
    8282
    8383
    84 === Validation ===
    85 * The model file was implemented in Ref. [ [#Alva 2] ] using FeynRules v2.0.6 and MG5_aMC@NLO (MG5) v2.1.0 and v2.3.2.2.  See Tables 2 and 5 of Ref. [ [#Alva 2] ] for further validation checks; note that mixing matrices have been factored out/normalized in tabulated results.
     84== Validation ==
     85* The model file was validated at LO in  [ [#Alva 2] ]; see Tables 2 and 5 for further validation checks.
     86* The model file was validated at NLO in [ [#Degrande 3] ]; see Table 1 for further validation checks.
    8687* For very large masses, this model has been constructed to satisfy the Goldstone Equivalence Theorem:
    8788{{{
     
    9596}}}
    9697
    97 === List of analyses that have used the model file ===
     98
     99=== List of analyses that have used the model file ===
    98100* Please email to update this space.
    99101
    100102
    101 === References ===
     103== References ==
     104* Please cite [ 1 ] for model and [ 2-3 ] for the FR/UFO model files/validation.
     105
    102106[=#Atre] [1] A. Atre, T. Han, S. Pascoli and B. Zhang, The Search for Heavy Majorana Neutrinos, JHEP '''0905''', 030 (2009)  arXiv:0901.3589 [hep-ph]
    103107