Changes between Version 2 and Version 3 of topBSM


Ignore:
Timestamp:
09/03/13 20:48:45 (7 years ago)
Author:
stefankrastanov
Comment:

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  • topBSM

    v2 v3  
    11== Top Quark Decay to a Higgs and a Light Quark Operator ==
    22
    3 ### Motivation
     3=== Motivation ===
    44
    55Neutral Flavor Changing couplings are absent in the Standard Model at tree
     
    7474of the form $c_i\frac{m_t^2}{\Lambda^2}$.
    7575
    76 ### Implementation and Validation
     76=== Implementation and Validation ===
    7777
    7878The implementation is a straightforward transcription of the Lagrangian into
     
    8585== Beyond-SM Operators with the Top Quark ==
    8686
    87 ### Motivation
     87=== Motivation ===
    8888
    8989This model is a reimplementation of the model behind the following paper:
     
    107107masses.
    108108
    109 ### Spin Zero, Color Singlet Particle
     109=== Spin Zero, Color Singlet Particle ===
    110110
    111111The name used in [@frederix2009top] for this resonance is `S0` for "color
     
    206206}}}
    207207
    208 #### Validation of the Model
     208==== Validation of the Model ====
    209209
    210210The first step is to compare the old and the new implementations through the
     
    229229interest.
    230230
    231 ### Spin Zero, Color Octet Particle
     231=== Spin Zero, Color Octet Particle ===
    232232
    233233The name for this resonance is `O0` for "color
     
    276276substituted couplings and masses.
    277277
    278 #### Validation of the Model
     278==== Validation of the Model ====
    279279
    280280As with `S0` a patch is necessary before one can proceed with validation in the
     
    287287build-in tools in `FeynRules` and `MadGraph5`.
    288288
    289 ### Spin One, Color Singlet Particle
     289=== Spin One, Color Singlet Particle ===
    290290
    291291The name for this resonance is `S1`. It has both vector and axial couplings to
     
    321321The width of the particle is calculated and provided in the model as well.
    322322
    323 #### Validation of the Model
     323==== Validation of the Model ====
    324324
    325325Besides the basic correctness tests provided by `FeynRules` and `MadGraph5` the
     
    332332well.
    333333
    334 ### Spin One, Color Octet Particle
     334=== Spin One, Color Octet Particle ===
    335335
    336336The name for this resonance is `O1`. The need for a `FeynRules` version of it
     
    355355The width of the particles is calculated and provided in the model as well.
    356356
    357 #### Validation of the Model
     357==== Validation of the Model ====
    358358
    359359Similar models are discussed in [@choudhury2007top] and [@antunano2008top].
     
    372372
    373373
    374 #### Technical Constraints
     374==== Technical Constraints ====
    375375
    376376During the implementation of this model a bug in the canonicalization routines
     
    383383`FeynRules 1.7.178` or later is necessary.
    384384
    385 ## General Technical Constraints
    386 
    387 ### Required Versions
     385== General Technical Constraints ==
     386
     387=== Required Versions ===
    388388
    389389As was mentioned above, the minimal version of `FeynRules` in which the models
     
    399399`perl -pi -e 's/goldstone/GoldstoneBoson/g' ./models/topBSM_UFO/particles.py`.
    400400
    401 ### Setting Mass Ranges
     401=== Setting Mass Ranges
    402402
    403403The calculation of the widths of different particles (especially `S0` and `O0`)
     
    409409`FeynRules` and not from `MadGraph5`.
    410410
    411 # Annex
    412 
    413 ## Patching the `standalone` Mode
     411= Annex =
     412
     413== Patching the `standalone` Mode ==
    414414
    415415In `standalone` mode couplings are evaluated only once, before generating a
     
    421421called after each generation of random phase space points. A patch that does
    422422this automatically is provided with the models.
     423
     424== References ==
     425
     426@article{zhang2013top,
     427  title={Top-quark decay into Higgs and a light quark at NLO in QCD},
     428  author={Zhang, Cen and Maltoni, Fabio},
     429  journal={arXiv preprint arXiv:1305.7386},
     430  year={2013}
     431}
     432
     433@article{frederix2009top,
     434  title={Top pair invariant mass distribution: a window on new physics},
     435  author={Frederix, Rikkert and Maltoni, Fabio},
     436  journal={Journal of High Energy Physics},
     437  volume={2009},
     438  number={01},
     439  pages={047},
     440  year={2009},
     441  publisher={IOP Publishing}
     442}
     443
     444@article{grzadkowski2010dimension,
     445  title={Dimension-six terms in the standard model Lagrangian},
     446  author={Grzadkowski, B and Iskrzynski, M and Misiak, M and Rosiek, J},
     447  journal={Journal of High Energy Physics},
     448  volume={2010},
     449  number={10},
     450  pages={1--18},
     451  year={2010},
     452  publisher={Springer}
     453}
     454
     455@article{choudhury2007top,
     456  title={Top production at the Tevatron/LHC and nonstandard, strongly interacting spin one particles},
     457  author={Choudhury, Debajyoti and Godbole, Rohini M and Singh, Ritesh K and Wagh, Kshitij},
     458  journal={Physics Letters B},
     459  volume={657},
     460  number={1},
     461  pages={69--76},
     462  year={2007},
     463  publisher={Elsevier}
     464}
     465
     466@article{antunano2008top,
     467  title={Top quarks, axigluons, and charge asymmetries at hadron colliders},
     468  author={Antunano, Oscar and K{\"u}hn, Johann H and Rodrigo, German},
     469  journal={Physical Review D},
     470  volume={77},
     471  number={1},
     472  pages={014003},
     473  year={2008},
     474  publisher={APS}
     475}
     476
     477@article{falkowski2012axigluon,
     478  title={AxigluonCom - an axigluon FeynRules model},
     479  author={A.Falkowski},
     480  year={2012},
     481  publisher={APS}
     482}
     483
     484@article{deutschmann2012trileptons,
     485  title={Trileptons at the LHC in the Standard Model and Beyond},
     486  author={Nicolas Deutschmann},
     487  year={2012}
     488}
     489
     490@article{christensen2009feynrules,
     491  title={FeynRules--Feynman rules made easy},
     492  author={Christensen, Neil D and Duhr, Claude},
     493  journal={Computer Physics Communications},
     494  volume={180},
     495  number={9},
     496  pages={1614--1641},
     497  year={2009},
     498  publisher={Elsevier}
     499}
     500
     501@article{alwall2011madgraph,
     502  title={MadGraph 5: going beyond},
     503  author={Alwall, Johan and Herquet, Michel and Maltoni, Fabio and Mattelaer, Olivier and Stelzer, Tim},
     504  journal={Journal of High Energy Physics},
     505  volume={2011},
     506  number={6},
     507  pages={1--40},
     508  year={2011},
     509  publisher={Springer}
     510}
     511
     512@article{deutschmann2012monte,
     513  title={Monte Carlo Simulation of electron positron pair to a mu and tau pairs},
     514  author={Nicolas Deutschmann, Christoph Charles, Stefan Krastanov},
     515  year={2012}
     516}
     517
     518