Higgs couplings beyond the Standard Model

Abstract : We consider the Higgs boson decay processes and its production, and provide a parameterisation tailored for testing models of new physics beyond the Standard Model. We also compare our formalism to other existing parameterisations based on scaling factors in front of the couplings and to effective Lagrangian approaches. Different formalisms allow to best address different aspects of the Higgs boson physics. The choice of a particular parameterisation depends on a non-obvious balance of quantity and quality of the available experimental data, envisaged purpose for the parameterisation and degree of model independence, importance of the radiative corrections, scale at which new particles appear explicitly in the physical spectrum. At present only simple parameterisations with a limited number of fit parameters can be performed, but this situation will improve with the forthcoming experimental LHC data. Detailed fits can only be performed by the experimental collaborations at present, as the full information on the different decay modes is not completely available in the public domain. It is therefore important that different approaches are considered and that the most detailed information is made available to allow testing the different aspects of the Higgs boson physics and the possible hints beyond the Standard Model.
Type de document :
Article dans une revue
Journal of High Energy Physics, Springer, 2013, 3, pp.029. <10.1007/JHEP03(2013)029>
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Contributeur : Sylvie Flores <>
Soumis le : mercredi 31 octobre 2012 - 07:15:31
Dernière modification le : mercredi 27 juillet 2016 - 14:48:48




G. Cacciapaglia, A. Deandrea, Guillaume Drieu La Rochelle, J.-B. Flament. Higgs couplings beyond the Standard Model. Journal of High Energy Physics, Springer, 2013, 3, pp.029. <10.1007/JHEP03(2013)029>. <in2p3-00747311>



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