Changes between Version 26 and Version 27 of HeavyN
 Timestamp:
 02/23/16 18:02:04 (4 years ago)
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HeavyN
v26 v27 7 7 8 8 In collaboration with 9 Daniel Alva and Tao Han , and Celine Degrande, Olivier Mattelear, and Jessica Turner.9 Daniel Alva and Tao Han [ [#Alva 1] ], and Celine Degrande, Olivier Mattelear, and Jessica Turner [ [#Degrande 2] ]. 10 10 11 11 12 12 == Model Description == 13 This effective model extends the Standard Model (SM) field content by introducing three righthanded (RH) neutrinos, which are singlets under the SM gauge symmetry (no color, weak isospin, or weak hypercharge charges). Each RH neutrino possesses one RH Majorana mass. After electroweak symmetry breaking, the Lagrangian with three heavy Majorana neutrinos ''N''i (for i=1,2,3) is given by [ [#Atre 1] ]13 This effective model extends the Standard Model (SM) field content by introducing three righthanded (RH) neutrinos, which are singlets under the SM gauge symmetry (no color, weak isospin, or weak hypercharge charges). Each RH neutrino possesses one RH Majorana mass. After electroweak symmetry breaking, the Lagrangian with three heavy Majorana neutrinos ''N''i (for i=1,2,3) is given by [ [#Atre 3] ] 14 14 {{{ 15 15 #!latex … … 80 80 * Nine mixing parameters: V''lk'' for ''l'' = ''e, mu, tau'' and ''k'' = 1,2,3. Default values are V''lk'' = Identity(3x3), i.e., Ve1 = Vmu2 = Vta3 = 1 and all others zero. 81 81 * '''Note''': VlN are restricted to be real in the model file. 82 * '''Note''': Default parameters are set so "outofthebox" c omparisons can be performed with [ [#Degrande 2] ] and [ [#Alva 3] ].82 * '''Note''': Default parameters are set so "outofthebox" checks can be made with [ [#Alva 1] ] and [ [#Degrande 2] ]. 83 83 84 84 85 85 == Validation == 86 * The model file was validated at LO in [ [#Alva 2] ]; see Tables 2 and 5 for further validation checks.87 * The model file was validated at NLO in [ [#Degrande 3] ]; see Table 1 for further validation checks.86 * The model file was validated at LO in [ [#Alva 1] ]; see Tables 2 and 5 for further validation checks. 87 * The model file was validated at NLO in [ [#Degrande 2] ]; see Table 1 for further validation checks. 88 88 * For very large masses, this model has been constructed to satisfy the Goldstone Equivalence Theorem: 89 89 {{{ … … 103 103 104 104 == References == 105 * Please cite [ 1 ] for model and [ 23 ] for the FR/UFO modelfiles.105 * Please cite [ 3 ] for the model and [ 12 ] for the FR/UFO files. 106 106 107 [=#A tre] [1] A. Atre, T. Han, S. Pascoli and B. Zhang, ''The Search for Heavy Majorana Neutrinos,'' JHEP '''0905''', 030 (2009), arXiv:0901.3589[hepph]107 [=#Alva] [1] D. Alva, T. Han, R. Ruiz, ''Heavy Majorana neutrinos from {{{$W\gamma$}}} ''fusion at hadron colliders,'' JHEP '''1502''', 072 (2015), arXiv:1411.7305 [hepph] 108 108 109 109 [=#Degrande] [2] C. Degrande, O. Mattelear, R. Ruiz, J. Turner, ''FullyAutomated Precision Predictions for Heavy Neutrino Production Mechanisms at Hadron Colliders,'' arXiv:1602.00000 [hepph] 110 110 111 [=#Alva] [3] D. Alva, T. Han, R. Ruiz, ''Heavy Majorana neutrinos from {{{$W\gamma$}}} ''fusion at hadron colliders,'' JHEP '''1502''', 072 (2015), arXiv:1411.7305 [hepph] 112 111 [=#Atre] [3] A. Atre, T. Han, S. Pascoli and B. Zhang, ''The Search for Heavy Majorana Neutrinos,'' JHEP '''0905''', 030 (2009), arXiv:0901.3589 [hepph]