Changes between Version 3 and Version 4 of EffLRSM


Ignore:
Timestamp:
10/28/16 13:22:51 (4 years ago)
Author:
richardphysics
Comment:

Updated Refs, Validation, QCD Corrections, and Authorship

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  • EffLRSM

    v3 v4  
    1 Hello World - In Dev -
     1Hello World - In Development - To be published Oct 30
    22
    3 = SM + ... at NLO in QCD =
     3Need:
     4* Description
     5* Files
     6* Notes
     7
     8= Effective Left-Right Symmetric Model at NLO in QCD =
    49
    510=== Contact Author ===
     
    914
    1015In collaboration with
    11 Daniel Alva and Tao Han [ [#Alva 1] ], and Celine Degrande, Olivier Mattelear, and Jessica Turner [ [#Degrande 2] ].
     16Olivier Mattelaer and Manimala Mitra [ [#Mattelaer 1] ], and
     17Manimala Mitra, Darren Scott, and Michael Spannowsky [ [#Mitra 2] ].
    1218
    1319
    1420== Model Description ==
    15 This effective model extends the Standard Model (SM) field content by introducing three right-handed (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] ]
     21This effective model extends the Standard Model (SM) field content by introducing heavy Left-Right symmetric gauge bosons W,,R,,^+-^, Z,,R,, with masses M,,WR,, and M,,ZR,,, as well as three heavy Majorana neutrinos N,,i,, with mass m,,Ni,,.
     22
    1623{{{
    1724#!latex
     
    4350\end{eqnarray}
    4451}}}
    45 Neutrino masses (mNk) and mixing parameters (Vlk) between heavy mass eigenstate and (active) flavor eigenstates are taken to be independent, phenomenological parameters. This allows for maximum flexibility and model independence when calculating rates. Therefore, some care is required by the user.
    46 The lepton number- and flavor-violating interactions of the Lagrangian allow for modeling of the Type I, Inverse, and Linear seesaw mechanisms at both lepton, hadron, and lepto-hadron colliders.
     52
    4753
    4854== QCD Corrections ==
    49 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.
    50 In the UFO file, five massless quarks are assumed as are zero off-diagonal CKM matrix entries.
    51 For additional details, see [ [#Degrande 2] ] and references therein.
    52 These additions permit tree-level calculations at LO and NLO in QCD and loop-induced calculations at LO in QCD using MadGraph_aMC@NLO.
     55The SM Lagrangian with Goldstone boson couplings in the Feynman Gauge
     56and the above Lagrangian in the Unitary 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.
     57In the UFO file, five massless quarks are assumed as are zero off-diagonal SM CKM and RH CKM' matrix entries. For additional details, see [ [#Mattelaer 1] ]. These additions permit tree-level calculations at LO and NLO in QCD and loop-induced calculations at LO in QCD using MadGraph_aMC@NLO, HERWIG, and SHERPA.
    5358
    5459
     
    8691
    8792== Validation ==
    88 * The model file was validated at LO in  [ [#Alva 1] ]; see Tables 2 and 5 for further validation checks.
    89 * The model file was validated at NLO in [ [#Degrande 2] ]; see Table 1 for further validation checks.
    90 * For very large masses, this model has been constructed to satisfy the Goldstone Equivalence Theorem:
    91 {{{
    92 #!latex
    93 \begin{eqnarray}
    94 \text{BR}(N_i \rightarrow W^+ \ell^-) &=& \text{BR}(N_i \rightarrow W^- \ell^+) =
    95 \\
    96 \text{BR}(N_i \rightarrow Z \nu_\ell + Z \overline{\nu_\ell} ) &=&
    97 \text{BR}(N_i \rightarrow h \nu_\ell + h \overline{\nu_\ell} ) = 25\%.
    98 \end{eqnarray}
    99 }}}
     93* The model file was checked against exact NLO W,,R,, predictions from [ [# 2] ].
     94* Partial and total widths for W,,R,,, Z,,R,,, and N,,1,, are checked against exact analytic calculations. See [ [# 1] ] for more information.
    10095
    10196
    102 === List of analyses that have used the model file ===
     97
     98=== List of studies that have used the model file ===
    10399* Please email to update this space.
    104100
    105101
    106102== References ==
    107 * Please cite [ 3 ] for the model and [ 1-2 ] for the FR/UFO files.
     103* Please cite [ 1 ] for the model file and [ 2 ] for neutrino jets.
    108104
    109 [=#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 [hep-ph]
     105[=#Mattelaer] [1] O. Mattelaer, M. Mitra, R. Ruiz,
     106''Automated Neutrino Jet and Top Jet Predictions at NLO+PS Matching in Effective Left-Right Symmetric Models,'' arXiv:1610.XXXXX [hep-ph]
    110107
    111 [=#Degrande] [2] C. Degrande, O. Mattelear, R. Ruiz, J. Turner, ''Fully-Automated Precision Predictions for Heavy Neutrino Production Mechanisms at Hadron Colliders,'' arXiv:1602.06957 [hep-ph]
    112 
    113 [=#Atre] [3] A. Atre, T. Han, S. Pascoli and B. Zhang, ''The Search for Heavy Majorana Neutrinos,'' JHEP '''0905''', 030 (2009),  arXiv:0901.3589 [hep-ph]
     108[=#Mitra] [2] M. Mitra, D. Scott, and M. Spannowsky,
     109''Neutrino Jets from High-Mass W,,R,, Gauge Bosons in TeV-Scale Left-Right Symmetric Models'', arXiv:1607.03504 [hep-ph]