Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 32579
The Search of Anomalous Higgs Boson Couplings at the Large Hadron Electron Collider and Future Circular Electron Hadron Collider

Authors: Ilkay Turk Cakir, Murat Altinli, Zekeriya Uysal, Abdulkadir Senol, Olcay Bolukbasi Yalcinkaya, Ali Yilmaz


The Higgs boson was discovered by the ATLAS and CMS experimental groups in 2012 at the Large Hadron Collider (LHC). Production and decay properties of the Higgs boson, Standard Model (SM) couplings, and limits on effective scale of the Higgs boson’s couplings with other bosons are investigated at particle colliders. Deviations from SM estimates are parametrized by effective Lagrangian terms to investigate Higgs couplings. This is a model-independent method for describing the new physics. In this study, sensitivity to neutral gauge boson anomalous couplings with the Higgs boson is investigated using the parameters of the Large Hadron electron Collider (LHeC) and the Future Circular electron-hadron Collider (FCC-eh) with a model-independent approach. By using MadGraph5_aMC@NLO multi-purpose event generator with the parameters of LHeC and FCC-eh, the bounds on the anomalous Hγγ, HγZ and HZZ couplings in e− p → e− q H process are obtained. Detector simulations are also taken into account in the calculations.

Keywords: Anomalous Couplings, Effective Lagrangian, Electron-Proton Colliders, Higgs Boson.

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 778


[1] G. Aad et al., “Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC,” Phys. Lett., vol. B716, pp. 1–29, 2012.
[2] S. Chatrchyan et al., “Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC,” Phys. Lett., vol. B716, pp. 30–61, 2012.
[3] J. R. Andersen et al., “Handbook of LHC Higgs Cross Sections: 3. Higgs Properties,” 2013.
[4] W. Buchmuller and D. Wyler, “Effective Lagrangian Analysis of New Interactions and Flavor Conservation,” Nucl. Phys., vol. B268, pp. 621–653, 1986.
[5] K. Hagiwara, R. Szalapski, and D. Zeppenfeld, “Anomalous Higgs boson production and decay,” Phys. Lett., vol. B318, pp. 155–162, 1993.
[6] G. F. Giudice, C. Grojean, A. Pomarol, and R. Rattazzi, “The Strongly-Interacting Light Higgs,” JHEP, vol. 06, p. 045, 2007.
[7] B. Grzadkowski, M. Iskrzynski, M. Misiak, and J. Rosiek, “Dimension-Six Terms in the Standard Model Lagrangian,” JHEP, vol. 10, p. 085, 2010.
[8] R. Contino, M. Ghezzi, C. Grojean, M. Muhlleitner, and M. Spira, “Effective Lagrangian for a light Higgs-like scalar,” JHEP, vol. 07, p. 035, 2013.
[9] J. L. Abelleira Fernandez et al., “A Large Hadron Electron Collider at CERN: Report on the Physics and Design Concepts for Machine and Detector,” J. Phys., vol. G39, p. 075001, 2012.
[10] O. Bruning, J. Jowett, M. Klein, D. Pellegrini, D. Schulte, and F. Zimmermann, “Future Circular Collider Study FCC-he Baseline Parameters,” Tech. Rep. CERN-ACC-2017-0019, CERN, Geneva, Apr 2017.
[11] A. Alloul, B. Fuks, and V. Sanz, “Phenomenology of the Higgs Effective Lagrangian via FEYNRULES,” JHEP, vol. 04, p. 110, 2014.
[12] J. Alwall, R. Frederix, S. Frixione, V. Hirschi, F. Maltoni, O. Mattelaer, H. S. Shao, T. Stelzer, P. Torrielli, and M. Zaro, “The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations,” JHEP, vol. 07, p. 079, 2014.
[13] C. Degrande, C. Duhr, B. Fuks, D. Grellscheid, O. Mattelaer, and T. Reiter, “UFO - The Universal FeynRules Output,” Comput. Phys. Commun., vol. 183, pp. 1201–1214, 2012.
[14] A. Alloul, N. D. Christensen, C. Degrande, C. Duhr, and B. Fuks, “FeynRules 2.0 - A complete toolbox for tree-level phenomenology,” Comput. Phys. Commun., vol. 185, pp. 2250–2300, 2014.
[15] T. Sjostrand, S. Mrenna, and P. Z. Skands, “PYTHIA 6.4 Physics and Manual,” JHEP, vol. 05, p. 026, 2006.
[16] M. Selvaggi, “DELPHES 3: A modular framework for fast-simulation of generic collider experiments,” J. Phys. Conf. Ser., vol. 523, p. 012033, 2014.
[17] C. Englert, R. Kogler, H. Schulz, and M. Spannowsky, “Higgs coupling measurements at the LHC,” Eur. Phys. J., vol. C76, no. 7, p. 393, 2016.
[18] G. Aad et al., “Constraints on non-Standard Model Higgs boson interactions in an effective Lagrangian using differential cross sections measured in the H → γγ decay channel at √s = 8TeV with the ATLAS detector,” Phys. Lett., vol. B753, pp. 69–85, 2016.