Abstract
We consider composite Higgs models where the Higgs is a pseudo-Nambu Goldstone boson arising from the spontaneous breaking of an approximate global symmetry by some underlying strong dynamics. We focus on the SO(5) → SO(4) symmetry breaking pattern, assuming the “partial compositeness” paradigm. We study the consequences on Higgs physics of the fermionic representations produced by the strong dynamics, that mix with the Standard Model (SM) degrees of freedom. We consider models based on the lowest-dimensional representations of SO(5) that allow for the custodial protection of the \( Z\overline{b} b \) coupling, i.e. the 5, 10 and 14. We find a generic suppression of the gluon fusion process, while the Higgs branching fractions can be enhanced or suppressed compared to the SM. Interestingly, a precise measurement of the Higgs boson couplings can distinguish between different realizations in the fermionic sector, thus providing crucial information about the nature of the UV dynamics.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
ATLAS collaboration, Observation of a new particle in the search for the standard model Higgs boson with the ATLAS detector at the LHC, Phys. Lett. B 716 (2012) 1 [arXiv:1207.7214] [INSPIRE].
CMS collaboration, Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC, Phys. Lett. B 716 (2012) 30 [arXiv:1207.7235] [INSPIRE].
D.B. Kaplan and H. Georgi, SU(2) × U(1) breaking by vacuum misalignment, Phys. Lett. B 136 (1984) 183 [INSPIRE].
D.B. Kaplan and H. Georgi, Composite Higgs scalars, Phys. Lett. B 136 (1984) 187 [INSPIRE].
H. Georgi, D.B. Kaplan and P. Galison, Calculation of the composite Higgs mass, Phys. Lett. B 143 (1984) 152 [INSPIRE].
H. Georgi and D.B. Kaplan, Composite Higgs and custodial SU(2), Phys. Lett. B 145 (1984) 216 [INSPIRE].
M.J. Dugan, H. Georgi and D.B. Kaplan, Anatomy of a composite Higgs model, Nucl. Phys. B 254 (1985) 299 [INSPIRE].
R. Contino, Y. Nomura and A. Pomarol, Higgs as a holographic pseudo-Goldstone boson, Nucl. Phys. B 671 (2003) 148 [hep-ph/0306259] [INSPIRE].
G.F. Giudice, C. Grojean, A. Pomarol and R. Rattazzi, The strongly-interacting light Higgs, JHEP 06 (2007) 045 [hep-ph/0703164] [INSPIRE].
M. Gillioz, R. Grober, C. Grojean, M. Muhlleitner and E. Salvioni, Higgs low-energy theorem (and its corrections) in composite models, JHEP 10 (2012) 004 [arXiv:1206.7120] [INSPIRE].
T. Corbett, O.J.P. Eboli, J. Gonzalez-Fraile and M.C. Gonzalez-Garcia, Constraining anomalous Higgs interactions, Phys. Rev. D 86 (2012) 075013 [arXiv:1207.1344] [INSPIRE].
D. Carmi, A. Falkowski, E. Kuflik, T. Volansky and J. Zupan, Higgs after the discovery: a status report, JHEP 10 (2012) 196 [arXiv:1207.1718] [INSPIRE].
E.E. Jenkins, A.V. Manohar and M. Trott, Renormalization group evolution of the standard model dimension six operators I: formalism and λ dependence, JHEP 10 (2013) 087 [arXiv:1308.2627] [INSPIRE].
R. Alonso, M.B. Gavela, L. Merlo, S. Rigolin and J. Yepes, The effective chiral lagrangian for a light dynamical “Higgs particle”, Phys. Lett. B 722 (2013) 330 [Erratum ibid. B 726 (2013) 926] [arXiv:1212.3305] [INSPIRE].
G. Buchalla, O. Catá and C. Krause, Complete electroweak chiral lagrangian with a light Higgs at NLO, Nucl. Phys. B 880 (2014) 552 [arXiv:1307.5017] [INSPIRE].
I. Brivio et al., Disentangling a dynamical Higgs, JHEP 03 (2014) 024 [arXiv:1311.1823] [INSPIRE].
B.A. Dobrescu, Minimal composite Higgs model with light bosons, Phys. Rev. D 63 (2001) 015004 [hep-ph/9908391] [INSPIRE].
K. Agashe, R. Contino and A. Pomarol, The minimal composite Higgs model, Nucl. Phys. B 719 (2005) 165 [hep-ph/0412089] [INSPIRE].
A. Falkowski, Pseudo-goldstone Higgs production via gluon fusion, Phys. Rev. D 77 (2008) 055018 [arXiv:0711.0828] [INSPIRE].
I. Low, R. Rattazzi and A. Vichi, Theoretical constraints on the Higgs effective couplings, JHEP 04 (2010) 126 [arXiv:0907.5413] [INSPIRE].
M. Montull, F. Riva, E. Salvioni and R. Torre, Higgs couplings in composite models, Phys. Rev. D 88 (2013) 095006 [arXiv:1308.0559] [INSPIRE].
M. Gillioz, R. Grober, A. Kapuvari and M. Muhlleitner, Vector-like bottom quarks in composite Higgs models, JHEP 03 (2014) 037 [arXiv:1311.4453] [INSPIRE].
H.-C. Cheng, B.A. Dobrescu and J. Gu, Higgs mass from compositeness at a multi-TeV scale, arXiv:1311.5928 [INSPIRE].
J. Barnard, T. Gherghetta and T.S. Ray, UV descriptions of composite Higgs models without elementary scalars, JHEP 02 (2014) 002 [arXiv:1311.6562] [INSPIRE].
R. Contino and A. Pomarol, Holography for fermions, JHEP 11 (2004) 058 [hep-th/0406257] [INSPIRE].
K. Agashe, R. Contino, L. Da Rold and A. Pomarol, A custodial symmetry for \( Zb\overline{b} \), Phys. Lett. B 641 (2006) 62 [hep-ph/0605341] [INSPIRE].
R. Contino, T. Kramer, M. Son and R. Sundrum, Warped/composite phenomenology simplified, JHEP 05 (2007) 074 [hep-ph/0612180] [INSPIRE].
S. De Curtis, M. Redi and A. Tesi, The 4D composite Higgs, JHEP 04 (2012) 042 [arXiv:1110.1613] [INSPIRE].
G. Panico and A. Wulzer, The discrete composite Higgs model, JHEP 09 (2011) 135 [arXiv:1106.2719] [INSPIRE].
M.S. Carena, E. Ponton, J. Santiago and C.E.M. Wagner, Light kaluza klein states in Randall-Sundrum models with custodial SU(2), Nucl. Phys. B 759 (2006) 202 [hep-ph/0607106] [INSPIRE].
M.S. Carena, E. Ponton, J. Santiago and C.E.M. Wagner, Electroweak constraints on warped models with custodial symmetry, Phys. Rev. D 76 (2007) 035006 [hep-ph/0701055] [INSPIRE].
C. Csáki, A. Falkowski and A. Weiler, The flavor of the composite pseudo-Goldstone higgs, JHEP 09 (2008) 008 [arXiv:0804.1954] [INSPIRE].
A. Pomarol and F. Riva, The composite Higgs and light resonance connection, JHEP 08 (2012) 135 [arXiv:1205.6434] [INSPIRE].
D. Pappadopulo, A. Thamm and R. Torre, A minimally tuned composite Higgs model from an extra dimension, JHEP 07 (2013) 058 [arXiv:1303.3062] [INSPIRE].
I. Low and A. Vichi, On the production of a composite Higgs boson, Phys. Rev. D 84 (2011) 045019 [arXiv:1010.2753] [INSPIRE].
A. Azatov and J. Galloway, Light custodians and Higgs physics in composite models, Phys. Rev. D 85 (2012) 055013 [arXiv:1110.5646] [INSPIRE].
A. Azatov, R. Contino, A. Di Iura and J. Galloway, New prospects for Higgs compositeness in h → Zγ, Phys. Rev. D 88 (2013) 075019 [arXiv:1308.2676] [INSPIRE].
J. Mrazek, A. Pomarol, R. Rattazzi, M. Redi, J. Serra et al., The other natural two Higgs doublet model, Nucl. Phys. B 853 (2011) 1 [arXiv:1105.5403] [INSPIRE].
J. Elias-Miro, J.R. Espinosa, E. Masso and A. Pomarol, Renormalization of dimension-six operators relevant for the Higgs decays h → γγ, γZ, JHEP 08 (2013) 033 [arXiv:1302.5661] [INSPIRE].
J. Elias-Miro, J.R. Espinosa, E. Masso and A. Pomarol, Higgs windows to new physics through D = 6 operators: constraints and one-loop anomalous dimensions, JHEP 11 (2013) 066 [arXiv:1308.1879] [INSPIRE].
A. Pomarol and F. Riva, Towards the ultimate SM fit to close in on Higgs physics, JHEP 01 (2014) 151 [arXiv:1308.2803] [INSPIRE].
ATLAS collaboration, Combined measurements of the mass and signal strength of the Higgs-like boson with the ATLAS detector using up to 25 fb −1 of proton-proton collision data, ATLAS-CONF-2013-014 (2013).
M. Redi and A. Weiler, Flavor and CP invariant composite Higgs models, JHEP 11 (2011) 108 [arXiv:1106.6357] [INSPIRE].
L. Da Rold, C. Delaunay, C. Grojean and G. Perez, Up asymmetries from exhilarated composite flavor structures, JHEP 02 (2013) 149 [arXiv:1208.1499] [INSPIRE].
M. Redi, V. Sanz, M. de Vries and A. Weiler, Strong signatures of right-handed compositeness, JHEP 08 (2013) 008 [arXiv:1305.3818] [INSPIRE].
C. Delaunay et al., Light non-degenerate composite partners at the LHC, JHEP 02 (2014) 055 [arXiv:1311.2072] [INSPIRE].
A. Pomarol and J. Serra, Top quark compositeness: feasibility and implications, Phys. Rev. D 78 (2008) 074026 [arXiv:0806.3247] [INSPIRE].
L. Da Rold, Solving the A b FB anomaly in natural composite models, JHEP 02 (2011) 034 [arXiv:1009.2392] [INSPIRE].
ATLAS collaboration, An update of combined measurements of the new Higgs-like boson with high mass resolution channels, ATLAS-CONF-2012-170 (2012).
ATLAS collaboration, Combined coupling measurements of the Higgs-like boson with the ATLAS detector using up to 25 fb −1 of proton-proton collision data, ATLAS-CONF-2013-034 (2013).
ATLAS collaboration, Evidence for Higgs boson decays to the τ + τ − final state with the ATLAS detector, ATLAS-CONF-2013-108 (2013).
CMS collaboration, Search for the Standard-Model Higgs boson decaying to tau pairs in proton-proton collisions at \( \sqrt{s} \) = 7 and 8 TeV, CMS-PAS-HIG-13-004 (2013).
C. Anastasiou, E. Furlan and J. Santiago, Realistic composite Higgs models, Phys. Rev. D 79 (2009) 075003 [arXiv:0901.2117] [INSPIRE].
G. Panico, M. Redi, A. Tesi and A. Wulzer, On the tuning and the mass of the composite Higgs, JHEP 03 (2013) 051 [arXiv:1210.7114] [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 and G.F. Giudice, Upper bounds on supersymmetric particle masses, Nucl. Phys. B 306 (1988) 63 [INSPIRE].
G.W. Anderson and D.J. Castano, Measures of fine tuning, Phys. Lett. B 347 (1995) 300 [hep-ph/9409419] [INSPIRE].
A. Djouadi, The anatomy of electro-weak symmetry breaking. I: the Higgs boson in the standard model, Phys. Rept. 457 (2008) 1 [hep-ph/0503172] [INSPIRE].
A. Djouadi, V. Driesen, W. Hollik and A. Kraft, The Higgs photon — Z boson coupling revisited, Eur. Phys. J. C 1 (1998) 163 [hep-ph/9701342] [INSPIRE].
T. Hahn and M. Pérez-Victoria, Automatized one loop calculations in four-dimensions and D-dimensions, Comput. Phys. Commun. 118 (1999) 153 [hep-ph/9807565] [INSPIRE].
Open Access
This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Author information
Authors and Affiliations
Corresponding author
Additional information
ArXiv ePrint: 1402.2987
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
About this article
Cite this article
Carena, M., Da Rold, L. & Pontón, E. Minimal composite Higgs models at the LHC. J. High Energ. Phys. 2014, 159 (2014). https://doi.org/10.1007/JHEP06(2014)159
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP06(2014)159