# Changes between Version 6 and Version 7 of ChernSimonsPortal

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Timestamp:
07/09/19 13:42:28 (7 months ago)
Comment:

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Unmodified
 v6 == Model description The Chern-Simons portal adds a new vector particle with zero electric charge, the X boson, interacting with the Standard Model gauge bosons - W, Z, [[latex( $\gamma$ )]] via pseudo Chern-Simons current. The low energy effective interaction has the form The Chern-Simons portal adds a new vector particle with zero electric charge, the X boson, interacting with the Standard Model gauge bosons - W, Z, [[latex( $\gamma$ )]] via pseudo Chern-Simons current. The low energy effective interaction has the form [#ref1 [1]][#ref2 [2]] [[latex( $\mathcal{L}_{X} = \mathcal{L}_{X,\text{kin}}+\epsilon^{\mu\nu\alpha\beta}\left(W_{\mu}X_{\nu}\partial_{\alpha}WY{\dagger}_{\beta}+\text{h.c.} + c_{Z}Z_{\mu}X_{\nu}\partial_{\alpha}Z_{\beta}+c_{Z\gamma}Z_{\mu}X_{\nu}\partial_{\alpha}A_{\beta}\right) )]] [[latex($\mathcal{O}_{R} = \!\left( \bar{t}_R \gamma^\mu t_R \right) \!\left( \bar{t}_R \gamma_\mu t_R \right)\$ )]] == Implementation description == Implementation and usage description The model has been implemented using merging of SM.fr and ChernSimons.fr files. The implementation introduces one real new vector particle - X boson with the name xb. The implementation contains 6 new parameters: the coupling to W bosons cW (default value: 0.001), the coupling to Z bosons cZ (default value: 0.001), the coupling to the Z boson and photon cZgamma (default value: 0.001), the non-minimal coupling to muons Cmu (default value: 0.1), the X boson mass Mxb (default value: 1 in units of GeV), the X boson width Wxb (default value: 1 in units of GeV). The implementation is performed in the unitary gauge. The implementation format is the UFO format. The model has been implemented using merging of SM.fr and ChernSimons.fr files. The implementation introduces one real new vector particle - X boson with the name xb. The implementation contains 6 new parameters: the coupling to W bosons cW (default value: 0.001), the coupling to Z bosons cZ (default value: 0.001), the coupling to the Z boson and photon cZgamma (default value: 0.001), the non-minimal axial-vector coupling to muons Cmu (default value: 0.1), the X boson mass Mxb (default value: 1 in units of GeV), the X boson width Wxb (default value: 1 in units of GeV). The implementation is performed in the unitary gauge. The implementation format is the UFO format. == How to use the model in MadGraph To use the model, unpack the .zip archive and move the resulting folder ChernSimons_UFO to the directory /models of your MadGraph directory. To use the model, unpack the ChernSimons_UFO.zip archive and move the resulting folder ChernSimons_UFO to the directory /models of your MadGraph directory. == Files == List of studies used this implementation * [https://arxiv.org/abs/1903.11918 Probing new physics with displaced vertices: muon tracker at CMS] *  K. Bondarenko, A. Boyarsky, M. Ovchynnikov, O. Ruchayskiy, L. Shchutska. ''Probing new physics with displaced vertices: muon tracker at CMS''. [https://arxiv.org/abs/1903.11918 hep-ph/1903.11918] == References Please cite [1] for the model file Please cite [#ref3 [3]] when using the model file. * K. Bondarenko, A. Boyarsky, M. Ovchynnikov, O. Ruchayskiy, L. Shchutska. ''Probing new physics with displaced vertices: muon tracker at CMS''. [https://arxiv.org/abs/1903.11918 hep-ph/1903.11918] * [=#ref1 [1]] I. Antoniadis, A. Boyarsky, S. Espahbodi, O. Ruchayskiy, J.D. Wells. ''Anomaly driven signatures of new invisible physics at the Large Hadron Collider''. [https://arxiv.org/abs/0901.0639 hep-ph/0901.0639] * [=#ref2 [2]] S. Alekhin et.al. ''A facility to Search for Hidden Particles at the CERN SPS: the SHiP physics case''. [https://arxiv.org/abs/1504.04855 hep-ph/1504.04855] * [=#ref3 [3]] K. Bondarenko, A. Boyarsky, M. Ovchynnikov, O. Ruchayskiy, L. Shchutska. ''Probing new physics with displaced vertices: muon tracker at CMS''. [https://arxiv.org/abs/1903.11918 hep-ph/1903.11918] [[latex( $$\gamma^\mu \delta^{\mu} f^{\rho} g^{\delta} = \!\left( \right)$$ )]]