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.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
LHC Higgs Cross section Working Group, A. David et al., LHC HXSWG interim recommendations to explore the coupling structure of a Higgs-like particle, arXiv:1209.0040 [INSPIRE].
G. Cacciapaglia, A. Deandrea and J. Llodra-Perez, Higgs → γγ beyond the standard model, JHEP 06 (2009) 054 [arXiv:0901.0927] [INSPIRE].
F. Bonnet, M. Gavela, T. Ota and W. Winter, Anomalous Higgs couplings at the LHC and their theoretical interpretation, Phys. Rev. D 85 (2012) 035016 [arXiv:1105.5140] [INSPIRE].
F. Bonnet, T. Ota, M. Rauch and W. Winter, Interpretation of precision tests in the Higgs sector in terms of physics beyond the standard model, Phys. Rev. D 86 (2012) 093014 [arXiv:1207.4599] [INSPIRE].
T. Corbett, O. Eboli, J. Gonzalez-Fraile and M. Gonzalez-Garcia, Constraining anomalous Higgs interactions, Phys. Rev. D 86 (2012) 075013 [arXiv:1207.1344] [INSPIRE].
J. Espinosa, C. Grojean, M. Muhlleitner and M. Trott, Fingerprinting Higgs suspects at the LHC, JHEP 05 (2012) 097 [arXiv:1202.3697] [INSPIRE].
J. Espinosa, C. Grojean, M. Muhlleitner and M. Trott, First glimpses at Higgs’ face, JHEP 12 (2012) 045 [arXiv:1207.1717] [INSPIRE].
G. Bélanger et al., Higgs bosons at 98 and 125 GeV at LEP and the LHC, JHEP 01 (2013) 069 [arXiv:1210.1976] [INSPIRE].
G. Passarino, NLO inspired effective lagrangians for Higgs physics, Nucl. Phys. B 868 (2013) 416 [arXiv:1209.5538] [INSPIRE].
G. Bélanger, B. Dumont, U. Ellwanger, J. Gunion and S. Kraml, Higgs couplings at the end of 2012, JHEP 02 (2013) 053 [arXiv:1212.5244] [INSPIRE].
G. Moreau, Constraining extra-fermion(s) from the Higgs boson data, Phys. Rev. D 87 (2013) 015027 [arXiv:1210.3977] [INSPIRE].
M. Spira, A. Djouadi, D. Graudenz and P. Zerwas, Higgs boson production at the LHC, Nucl. Phys. B 453 (1995) 17 [hep-ph/9504378] [INSPIRE].
A. Azatov, R. Contino and J. Galloway, Model-independent bounds on a light Higgs, JHEP 04 (2012) 127 [arXiv:1202.3415] [INSPIRE].
CMS collaboration, Evidence for a new state decaying into two photons in the search for the standard model Higgs boson in pp collisions, CMS-PAS-HIG-12-015 (2012).
https://twiki.cern.ch/twiki/bin/view/CMSPublic/PhysicsResultsHIG.
ATLAS collaboration, Observation of an excess of events in the search for the Standard Model Higgs boson in the gamma-gamma channel with the ATLAS detector, ATLAS-CONF-2012-091 (2012).
LHC Higgs Cross section Working Group, Higgs cross sections at 7, 8 and 14 TeV, https://twiki.cern.ch/twiki/bin/view/LHCPhysics/CrossSections.
CMS collaboration, Evidence for a new state in the search for the standard model Higgs boson in the H → ZZ → 4 leptons channel in pp collisions at \( \sqrt{s}=7 \) and 8 TeV, CMS-PAS-HIG-12-016 (1460664).
ATLAS collaboration, Observation of an excess of events in the search for the standard model Higgs boson in the H → ZZ (∗) → 4l channel with the ATLAS detector, ATLAS-CONF-2012-092 (2012).
CMS collaboration, Search for the standard model Higgs boson produced in association with W or Z bosons, and decaying to bottom quarks for HCP 2012, CMS-PAS-HIG-12-044 (2012).
ATLAS collaboration, Search for the Standard Model Higgs boson produced in association with a vector boson and decaying to bottom quarks with the ATLAS detector, ATLAS-CONF-2012-161 (2012).
CMS collaboration, Combination of standard model Higgs boson searches and measurements of the properties of the new boson with a mass near 125 GeV, CMS-PAS-HIG-12-045 (2012).
ATLAS collaboration, Coupling properties of the new Higgs-like boson observed with the ATLAS detector at the LHC, ATLAS-CONF-2012-127 (2012).
A. Djouadi and A. Lenz, Sealing the fate of a fourth generation of fermions, Phys. Lett. B 715 (2012) 310 [arXiv:1204.1252] [INSPIRE].
O. Eberhardt et al., Impact of a Higgs boson at a mass of 126 GeV on the standard model with three and four fermion generations, Phys. Rev. Lett. 109 (2012) 241802 [arXiv:1209.1101] [INSPIRE].
N. Arkani-Hamed, A. Cohen, E. Katz and A. Nelson, The littlest Higgs, JHEP 07 (2002) 034 [hep-ph/0206021] [INSPIRE].
M. Schmaltz, The simplest little Higgs, JHEP 08 (2004) 056 [hep-ph/0407143] [INSPIRE].
A.V. Manohar and M.B. Wise, Flavor changing neutral currents, an extended scalar sector and the Higgs production rate at the CERN LHC, Phys. Rev. D 74 (2006) 035009 [hep-ph/0606172] [INSPIRE].
T. Appelquist, H.-C. Cheng and B.A. Dobrescu, Bounds on universal extra dimensions, Phys. Rev. D 64 (2001) 035002 [hep-ph/0012100] [INSPIRE].
G. Cacciapaglia, A. Deandrea and J. Llodra-Perez, A dark matter candidate from Lorentz invariance in 6D, JHEP 03 (2010) 083 [arXiv:0907.4993] [INSPIRE].
A. Arbey, G. Cacciapaglia, A. Deandrea and B. Kubik, Dark matter in a twisted bottle, JHEP 01 (2013) 147 [arXiv:1210.0384] [INSPIRE].
G. Cacciapaglia and B. Kubik, Even tiers and resonances on the real projective plane, JHEP 02 (2013) 052 [arXiv:1209.6556] [INSPIRE].
K. Agashe, R. Contino and A. Pomarol, The minimal composite Higgs model, Nucl. Phys. B 719 (2005) 165 [hep-ph/0412089] [INSPIRE].
K. Agashe and R. Contino, The minimal composite Higgs model and electroweak precision tests, Nucl. Phys. B 742 (2006) 59 [hep-ph/0510164] [INSPIRE].
K. Nishiwaki, K.-y. Oda, N. Okuda and R. Watanabe, A bound on universal extra dimension models from up to 2 fb −1 of LHC data at 7 TeV, Phys. Lett. B 707 (2012) 506 [arXiv:1108.1764] [INSPIRE].
U. Aglietti, R. Bonciani, G. Degrassi and A. Vicini, Two loop light fermion contribution to Higgs production and decays, Phys. Lett. B 595 (2004) 432 [hep-ph/0404071] [INSPIRE].
CMS collaboration, Evidence for a particle decaying to W + W − in the fully leptonic final state in a standard model Higgs boson search in pp collisions at the LHC, CMS-PAS-HIG-12-042 (2012).
W.D. Goldberger, B. Grinstein and W. Skiba, Distinguishing the Higgs boson from the dilaton at the Large Hadron Collider, Phys. Rev. Lett. 100 (2008) 111802 [arXiv:0708.1463] [INSPIRE].
J. Fan, W.D. Goldberger, A. Ross and W. Skiba, Standard Model couplings and collider signatures of a light scalar, Phys. Rev. D 79 (2009) 035017 [arXiv:0803.2040] [INSPIRE].
C. Csáki, J. Hubisz and S.J. Lee, Radion phenomenology in realistic warped space models, Phys. Rev. D 76 (2007) 125015 [arXiv:0705.3844] [INSPIRE].
M. Battaglia, S. De Curtis, A. De Roeck, D. Dominici and J.F. Gunion, On the complementarity of Higgs and radion searches at LHC, Phys. Lett. B 568 (2003) 92 [hep-ph/0304245] [INSPIRE].
D. Elander, C. Núñez and M. Piai, A light scalar from walking solutions in gauge-string duality, Phys. Lett. B 686 (2010) 64 [arXiv:0908.2808] [INSPIRE].
T. Appelquist and Y. Bai, A light dilaton in walking gauge theories, Phys. Rev. D 82 (2010) 071701 [arXiv:1006.4375] [INSPIRE].
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1210.8120
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License ( https://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
About this article
Cite this article
Cacciapaglia, G., Deandrea, A., La Rochelle, G.D. et al. Higgs couplings beyond the standard model. J. High Energ. Phys. 2013, 29 (2013). https://doi.org/10.1007/JHEP03(2013)029
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP03(2013)029