Abstract
We outline a method for characterizing deviations from the properties of a Standard Model (SM) Higgs boson. We apply it to current data in order to characterize up to which degree the SM Higgs boson interpretation is consistent with experiment. We find that the SM Higgs boson is consistent with the current data set at the 82 % confidence level, based on data of excess events reported by CMS and ATLAS, which are interpreted to be related to the mass scale m h ∼ 124 − 126 GeV, and on published CLs exclusion regions. We perform a global fit in terms of two parameters characterizing the deviation from the SM value in the gauge and fermion couplings of a Higgs boson. We find two minima in the global fit and identify observables that can remove this degeneracy. An update for Moriond 2012 data is included in the appendix, which finds that the SM Higgs boson is now consistent with the current data set at only the 89 % confidence level (which corresponds to ∼ 2 σ tension compared to the best fit point).
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
L. Susskind, Dynamics of spontaneous symmetry breaking in the Weinberg-Salam theory, Phys. Rev. D 20 (1979) 2619 [INSPIRE].
S. Weinberg, Implications of dynamical symmetry breaking: an addendum, Phys. Rev. D 19 (1979) 1277 [INSPIRE].
P. Sikivie, L. Susskind, M.B. Voloshin and V.I. Zakharov, Isospin breaking in technicolor models, Nucl. Phys. B 173 (1980) 189 [INSPIRE].
R.S. Chivukula and H. Georgi, Composite technicolor standard model, Phys. Lett. B 188 (1987) 99 [INSPIRE].
L. Hall and L. Randall, Weak scale effective supersymmetry, Phys. Rev. Lett. 65 (1990) 2939 [INSPIRE].
G. D’Ambrosio, G. Giudice, G. Isidori and A. Strumia, Minimal flavor violation: an effective field theory approach, Nucl. Phys. B 645 (2002) 155 [hep-ph/0207036] [INSPIRE].
A.J. Buras, Minimal flavor violation, Acta Phys. Polon. B 34 (2003) 5615 [hep-ph/0310208] [INSPIRE].
V. Cirigliano, B. Grinstein, G. Isidori and M.B. Wise, Minimal flavor violation in the lepton sector, Nucl. Phys. B 728 (2005) 121 [hep-ph/0507001] [INSPIRE].
ATLAS collaboration, G. Aad et al., Combined search for the standard model Higgs boson using up to 4.9 fb −1 of pp collision data at \( \sqrt {s} = 7 \) TeV with the ATLAS detector at the LHC, Phys. Lett. B 710 (2012) 49 [arXiv:1202.1408] [INSPIRE].
CMS collaboration, S. Chatrchyan et al., Combined results of searches for the standard model Higgs boson in pp collisions at \( \sqrt {s} = 7 \), arXiv:1202.1488 [INSPIRE].
CMS collaboration, S. Chatrchyan et al., Search for the standard model Higgs boson decaying into two photons in pp collisions at \( \sqrt {s} = 7 \) TeV, arXiv:1202.1487 [INSPIRE].
G. Giudice, C. Grojean, A. Pomarol and R. Rattazzi, The strongly-interacting light Higgs, JHEP 06 (2007) 045 [hep-ph/0703164] [INSPIRE].
R. Contino, C. Grojean, M. Moretti, F. Piccinini and R. Rattazzi, Strong double Higgs production at the LHC, JHEP 05 (2010) 089 [arXiv:1002.1011] [INSPIRE].
R. Grober and M. Muhlleitner, Composite Higgs boson pair production at the LHC, JHEP 06 (2011) 020 [arXiv:1012.1562] [INSPIRE].
A.V. Manohar and M.B. Wise, Modifications to the properties of the Higgs boson, Phys. Lett. B 636 (2006) 107 [hep-ph/0601212] [INSPIRE].
C. Burgess, J. Matias and M. Pospelov, A Higgs or not a Higgs? What to do if you discover a new scalar particle, Int. J. Mod. Phys. A 17 (2002) 1841 [hep-ph/9912459] [INSPIRE].
V. Barger, H.E. Logan and G. Shaughnessy, Identifying extended Higgs models at the LHC, Phys. Rev. D 79 (2009) 115018 [arXiv:0902.0170] [INSPIRE].
R. Lafaye, T. Plehn, M. Rauch, D. Zerwas and M. Dührssen, Measuring the Higgs sector, JHEP 08 (2009) 009 [arXiv:0904.3866] [INSPIRE].
S. Bock et al., Measuring hidden Higgs and strongly-interacting Higgs scenarios, Phys. Lett. B 694 (2010) 44 [arXiv:1007.2645] [INSPIRE].
B. Grinstein and M. Trott, A Higgs-Higgs bound state due to new physics at a TeV, Phys. Rev. D 76 (2007) 073002 [arXiv:0704.1505] [INSPIRE].
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].
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].
C. Englert, T. Plehn, M. Rauch, D. Zerwas and P.M. Zerwas, LHC: standard Higgs and hidden Higgs, Phys. Lett. B 707 (2012) 512 [arXiv:1112.3007] [INSPIRE].
M. Dührssen et al., Extracting Higgs boson couplings from CERN LHC data, Phys. Rev. D 70 (2004) 113009 [hep-ph/0406323] [INSPIRE].
B.A. Campbell, J. Ellis and K.A. Olive, Phenomenology and cosmology of an electroweak pseudo-dilaton and electroweak baryons, JHEP 03 (2012) 026 [arXiv:1111.4495] [INSPIRE].
ATLAS collaboration, G. Aad et al., Search for the Standard Model Higgs boson in the diphoton decay channel with 4.9 fb −1 of pp collisions at \( \sqrt {s} = 7 \) TeV with ATLAS, Phys. Rev. Lett. 108 (2012) 111803 [arXiv:1202.1414] [INSPIRE].
ATLAS collaboration, Combination of Higgs Boson Searches with up to 4.9 fb −1 of pp collisions data taken at a center-of-mass energy of 7 TeV with the ATLAS experiment at the LHC, ATLAS-CONF-2011-163 (2011).
CMS collaboration, Search for the standard model Higgs boson in the decay channel H → ZZ → 4l in pp collisions at \( \sqrt {s} = 7 \) TeV, PH-EP-2012-025 (2012).
CMS collaboration, S. Chatrchyan et al., Search for the standard model Higgs boson decaying to a W pair in the fully leptonic final state in pp collisions at \( \sqrt {s} = 7 \), arXiv:1202.1489 [INSPIRE].
LHC Higgs Cross Section Working Group collaboration, S. Dittmaier et al., Handbook of LHC Higgs cross sections: 1. Inclusive observables, arXiv:1101.0593 [INSPIRE].
K. Agashe, R. Contino and A. Pomarol, The minimal composite Higgs model, Nucl. Phys. B 719 (2005) 165 [hep-ph/0412089] [INSPIRE].
R. Contino, L. Da Rold and A. Pomarol, Light custodians in natural composite Higgs models, Phys. Rev. D 75 (2007) 055014 [hep-ph/0612048] [INSPIRE].
R. Barbieri, B. Bellazzini, V.S. Rychkov and A. Varagnolo, The Higgs boson from an extended symmetry, Phys. Rev. D 76 (2007) 115008 [arXiv:0706.0432] [INSPIRE].
B. Holdom and J. Terning, Large corrections to electroweak parameters in technicolor theories, Phys. Lett. B 247 (1990) 88 [INSPIRE].
M.E. Peskin and T. Takeuchi, A new constraint on a strongly interacting Higgs sector, Phys. Rev. Lett. 65 (1990) 964 [INSPIRE].
M. Golden and L. Randall, Radiative corrections to electroweak parameters in technicolor theories, Nucl. Phys. B 361 (1991) 3 [INSPIRE].
M.E. Peskin and T. Takeuchi, Estimation of oblique electroweak corrections, Phys. Rev. D 46 (1992) 381 [INSPIRE].
G. Altarelli and R. Barbieri, Vacuum polarization effects of new physics on electroweak processes, Phys. Lett. B 253 (1991) 161 [INSPIRE].
G. Altarelli, R. Barbieri and S. Jadach, Toward a model independent analysis of electroweak data, Nucl. Phys. B 369 (1992) 3 [Erratum ibid. B 376 (1992) 444] [INSPIRE].
M. Baak et al., Updated status of the global electroweak fit and constraints on new physics, arXiv:1107.0975 [INSPIRE].
D. Carmi, A. Falkowski, E. Kuflik and T. Volansky, Interpreting LHC Higgs results from natural new physics perspective, arXiv:1202.3144 [INSPIRE].
A. Azatov, R. Contino and J. Galloway, Model-independent bounds on a light Higgs, JHEP 04 (2012) 127 [arXiv:1202.3415] [INSPIRE].
Rencontres de Moriond 2012, http://moriond.in2p3.fr/.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1202.3697
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
Espinosa, J.R., Grojean, C., Mühlleitner, M. et al. Fingerprinting Higgs suspects at the LHC. J. High Energ. Phys. 2012, 97 (2012). https://doi.org/10.1007/JHEP05(2012)097
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP05(2012)097