Abstract
We consider scenarios of Higgs compositeness where the Higgs doublet arises as a pseudo-Nambu Goldstone boson. Our focus is the physical scalar (“radial”) excitation associated with the global symmetry breaking vacuum, which we call the global Higgs. For the minimal case of a SO(5)/SO(4) coset, the couplings of the global Higgs to Standard Model (SM) particles are fully determined by group theoretical factors and two decay constants. The global Higgs also couples to the composite resonances of the theory, inducing an interaction with the SM gauge bosons at one-loop. We thoroughly analyze representative fermionic sectors, considering a global Higgs both in the 5 and 14 representations of SO(5) and taking into account the renormalization group evolution of couplings in the composite sector. We derive the one-loop effective couplings and all decays of the global Higgs, showing that its decay width over mass can range from \( \mathcal{O}\left(1{0}^{-3}\right) \) to \( \mathcal{O}(1) \). Because of the multiplicity of the resonances, the coupling of the global Higgs to gluons is sizeable, potentially opening a new window into composite models at the LHC.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
G. Panico and A. Wulzer, The Composite Nambu-Goldstone Higgs, Lect. Notes Phys. 913 (2016) pp.1-316 [arXiv:1506.01961] [INSPIRE].
D. Buttazzo, F. Sala and A. Tesi, Singlet-like Higgs bosons at present and future colliders, JHEP 11 (2015) 158 [arXiv:1505.05488] [INSPIRE].
F. Feruglio, B. Gavela, K. Kanshin, P.A.N. Machado, S. Rigolin and S. Saa, The minimal linear σ-model for the Goldstone Higgs, JHEP 06 (2016) 038 [arXiv:1603.05668] [INSPIRE].
G. von Gersdorff, E. Pontón and R. Rosenfeld, The Dynamical Composite Higgs, JHEP 06 (2015) 119 [arXiv:1502.07340] [INSPIRE].
H. Terazawa, K. Akama and Y. Chikashige, Unified Model of the Nambu-Jona-Lasinio Type for All Elementary Particle Forces, Phys. Rev. D 15 (1977) 480 [INSPIRE].
W.A. Bardeen, C.T. Hill and M. Lindner, Minimal Dynamical Symmetry Breaking of the Standard Model, Phys. Rev. D 41 (1990) 1647 [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. Contino and G. Servant, Discovering the top partners at the LHC using same-sign dilepton final states, JHEP 06 (2008) 026 [arXiv:0801.1679] [INSPIRE].
J.A. Aguilar-Saavedra, Identifying top partners at LHC, JHEP 11 (2009) 030 [arXiv:0907.3155] [INSPIRE].
J. Mrazek and A. Wulzer, A Strong Sector at the LHC: Top Partners in Same-Sign Dileptons, Phys. Rev. D 81 (2010) 075006 [arXiv:0909.3977] [INSPIRE].
A. De Simone, O. Matsedonskyi, R. Rattazzi and A. Wulzer, A First Top Partner Hunter’s Guide, JHEP 04 (2013) 004 [arXiv:1211.5663] [INSPIRE].
M. Carena, L. Da Rold and E. Pontón, Minimal Composite Higgs Models at the LHC, JHEP 06 (2014) 159 [arXiv:1402.2987] [INSPIRE].
O. Matsedonskyi, G. Panico and A. Wulzer, Top Partners Searches and Composite Higgs Models, JHEP 04 (2016) 003 [arXiv:1512.04356] [INSPIRE].
J. Berger, J. Hubisz and M. Perelstein, A Fermionic Top Partner: Naturalness and the LHC, JHEP 07 (2012) 016 [arXiv:1205.0013] [INSPIRE].
Y. Okada and L. Panizzi, LHC signatures of vector-like quarks, Adv. High Energy Phys. 2013 (2013) 364936 [arXiv:1207.5607] [INSPIRE].
G. Cacciapaglia, A. Deandrea, L. Panizzi, S. Perries and V. Sordini, Heavy Vector-like quark with charge 5/3 at the LHC, JHEP 03 (2013) 004 [arXiv:1211.4034] [INSPIRE].
J. Kearney, A. Pierce and J. Thaler, Exotic Top Partners and Little Higgs, JHEP 10 (2013) 230 [arXiv:1306.4314] [INSPIRE].
A. Angelescu, A. Djouadi and G. Moreau, Vector-like top/bottom quark partners and Higgs physics at the LHC, Eur. Phys. J. C 76 (2016) 99 [arXiv:1510.07527] [INSPIRE].
D.B. Kaplan, Flavor at SSC energies: A new mechanism for dynamically generated fermion masses, Nucl. Phys. B 365 (1991) 259 [INSPIRE].
M. Bando, T. Kugo and K. Yamawaki, Nonlinear Realization and Hidden Local Symmetries, Phys. Rept. 164 (1988) 217 [INSPIRE].
S. Fichet, G. von Gersdorff, E. Pontón and R. Rosenfeld, The Global Higgs as a Signal for Compositeness at the LHC, arXiv:1608.01995 [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].
ATLAS collaboration, Measurements of the properties of the Higgs-like boson in the four lepton decay channel with the ATLAS detector using 25 fb-1 of proton-proton collision data, ATLAS-CONF-2013-013 (2013).
ATLAS collaboration, Searches for heavy diboson resonances in pp collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, arXiv:1606.04833[INSPIRE].
CMS collaboration, Search for massive resonances decaying into pairs of boosted W and Z bosons at \( \sqrt{s}=13 \) TeV, CMS-PAS-EXO-15-002 (2015).
ATLAS collaboration, Search for resonances decaying to photon pairs in 3.2 fb −1 of pp collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2015-081 (2015).
CMS collaboration, Search for new physics in high mass diphoton events in proton-proton collisions at \( \sqrt{s}=13 \) TeV, CMS-PAS-EXO-15-004 (2015) .
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].
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: 1607.03125
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
Fichet, S., von Gersdorff, G., Pontón, E. et al. The excitation of the global symmetry-breaking vacuum in composite Higgs models. J. High Energ. Phys. 2016, 158 (2016). https://doi.org/10.1007/JHEP09(2016)158
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP09(2016)158