Changes between Version 16 and Version 17 of HeavyN
 Timestamp:
 02/22/16 15:29:20 (4 years ago)
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HeavyN
v16 v17 1 1 = SM + Heavy N at NLO in QCD = 2 2 3 === = Implementation Author ====3 === Implementation Author === 4 4 Richard Ruiz 5 5 * University of Durham (IPPP) … … 7 7 8 8 In collaboration with 9 Daniel Alva and Tao Han and10 . 9 Daniel Alva and Tao Han, and Celine Degrande, Olivier Mattelear, and Jessica Turner. 10 11 11 12 12 == Model Description == … … 42 42 }}} 43 43 The 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 flavorviolating interactions of the model allow for modeling of the Type I, Inverse, and Linear seesaw mechanisms .44 The lepton number and flavorviolating interactions of the model allow for modeling of the Type I, Inverse, and Linear seesaw mechanisms at both electron, hadron, and ep colliders. 45 45 46 46 == 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 offdiagonal CKM matrix entries. 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. 48 In the UFO file, five massless quarks are assumed as are zero offdiagonal CKM matrix entries. 48 49 For additional details, see [ [#Degrande 2] ] and references within. 50 These additions permit treelevel calculations at LO and NLO in QCD and loopinduced calculations at LO in QCD using MadGraph_aMC@NLO. 49 51 50 52 … … 61 63 62 64 63 64 65 Notes: 65 === Notes === 66 66 * To download any of the packages and unpack via the terminal, use the commands: 67 67 … … 82 82 83 83 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. 86 87 * For very large masses, this model has been constructed to satisfy the Goldstone Equivalence Theorem: 87 88 {{{ … … 95 96 }}} 96 97 97 === List of analyses that have used the model file === 98 99 === List of analyses that have used the model file === 98 100 * Please email to update this space. 99 101 100 102 101 === References === 103 == References == 104 * Please cite [ 1 ] for model and [ 23 ] for the FR/UFO model files/validation. 105 102 106 [=#Atre] [1] A. Atre, T. Han, S. Pascoli and B. Zhang, The Search for Heavy Majorana Neutrinos, JHEP '''0905''', 030 (2009) arXiv:0901.3589 [hepph] 103 107