Abstract
The radial excitation of the global symmetry-breaking vacuum in composite Higgs models, called the “global Higgs”, has been recently a focus of investigation. In this paper we study the prospects for detecting this composite scalar at the 13 TeV LHC. We compute the global Higgs production rates and estimate the discovery potential of a global Higgs decaying into top quark pairs and into Higgs and electroweak gauge bosons with subsequent hadronic decays. The global Higgs may also decay into fermion resonances such as top partners, providing a new window into compositeness. We show that top partner jets can be effectively unresolved in some regions of the parameter space. Such “boosted top partner” signatures would deserve the development of dedicated substructure analyses.
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References
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].
S. Fichet, G. von Gersdorff, E. Pontón and R. Rosenfeld, The excitation of the global symmetry-breaking vacuum in composite Higgs models, JHEP 09 (2016) 158 [arXiv:1607.03125] [INSPIRE].
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].
G. von Gersdorff, E. Pontón and R. Rosenfeld, The dynamical composite Higgs, JHEP 06 (2015) 119 [arXiv:1502.07340] [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].
G. Panico and A. Wulzer, The composite Nambu-Goldstone Higgs, Lect. Notes Phys. 913 (2016) pp.1-316 [arXiv:1506.01961] [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, CERN, Geneva Switzerland (2013).
J. Alwall et al., The automated computation of tree-level and next-to-leading order differential cross sections and their matching to parton shower simulations, JHEP 07 (2014) 079 [arXiv:1405.0301] [INSPIRE].
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. 185 (2014) 2250 [arXiv:1310.1921] [INSPIRE].
NNPDF collaboration, R.D. Ball et al., Parton distributions with QED corrections, Nucl. Phys. B 877 (2013) 290 [arXiv:1308.0598] [INSPIRE].
A. Carmona, A. Delgado, M. Quirós and J. Santiago, Diboson resonant production in non-custodial composite Higgs models, JHEP 09 (2015) 186 [arXiv:1507.01914] [INSPIRE].
ATLAS collaboration, Search for Higgs boson pair production in the \( b\overline{b}b\overline{b} \) final state from pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, Eur. Phys. J. C 75 (2015) 412 [arXiv:1506.00285] [INSPIRE].
J.M. Butterworth, A.R. Davison, M. Rubin and G.P. Salam, Jet substructure as a new Higgs search channel at the LHC, Phys. Rev. Lett. 100 (2008) 242001 [arXiv:0802.2470] [INSPIRE].
ATLAS collaboration, Search for high-mass diboson resonances with boson-tagged jets in proton-proton collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, JHEP 12 (2015) 055 [arXiv:1506.00962] [INSPIRE].
S. Fichet and G. von Gersdorff, Effective theory for neutral resonances and a statistical dissection of the ATLAS diboson excess, JHEP 12 (2015) 089 [arXiv:1508.04814] [INSPIRE].
B.C. Allanach, B. Gripaios and D. Sutherland, Anatomy of the ATLAS diboson anomaly, Phys. Rev. D 92 (2015) 055003 [arXiv:1507.01638] [INSPIRE].
J. Stirling, LHC cross-section plots, available at http://www.hep.ph.ic.ac.uk/~wstirlin/plots/plots.html.
D. Gonçalves, F. Krauss and M. Spannowsky, Augmenting the diboson excess for the LHC run II, Phys. Rev. D 92 (2015) 053010 [arXiv:1508.04162] [INSPIRE].
J.O. Berger and T. Sellke, Testing a point null hypothesis: the irreconcilability of P values and evidence, J. Amer. Stat. Assoc. 82 (1987) 112.
J.O. Berger, M.J. Bayari and T. Sellke, Calibration of ρ values for testing precise null hypotheses, Amer. Statist. 55 (2001) 62.
G. Cowan, K. Cranmer, E. Gross and O. Vitells, Asymptotic formulae for likelihood-based tests of new physics, Eur. Phys. J. C 71 (2011) 1554 [Erratum ibid. C 73 (2013) 2501] [arXiv:1007.1727] [INSPIRE].
ATLAS collaboration, Search for heavy particles decaying to pairs of highly-boosted top quarks using lepton-plus-jets events in proton-proton collisions at \( \sqrt{s}=13 \) TeV with the ATLAS detector, ATLAS-CONF-2016-014, CERN, Geneva Switzerland (2016).
M. Backovic, T. Flacke, J.H. Kim and S.J. Lee, Search strategies for TeV scale fermionic top partners with charge 2/3, JHEP 04 (2016) 014 [arXiv:1507.06568] [INSPIRE].
M. Backović, T. Flacke, S.J. Lee and G. Perez, LHC top partner searches beyond the 2 TeV mass region, JHEP 09 (2015) 022 [arXiv:1409.0409] [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].
A. Azatov, M. Salvarezza, M. Son and M. Spannowsky, Boosting top partner searches in composite Higgs models, Phys. Rev. D 89 (2014) 075001 [arXiv:1308.6601] [INSPIRE].
O. Matsedonskyi, G. Panico and A. Wulzer, Top partners searches and composite Higgs models, JHEP 04 (2016) 003 [arXiv:1512.04356] [INSPIRE].
ATLAS collaboration, Search for pair and single production of new heavy quarks that decay to a Z boson and a third generation quark in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, ATLAS-CONF-2014-036, CERN, Geneva Switzerland (2014).
ATLAS collaboration, Search for pair and single production of new heavy quarks that decay to a Z boson and a third-generation quark in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, JHEP 11 (2014) 104 [arXiv:1409.5500] [INSPIRE].
ATLAS collaboration, Search for production of vector-like quark pairs and of four top quarks in the lepton-plus-jets final state in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, JHEP 08 (2015) 105 [arXiv:1505.04306] [INSPIRE].
ATLAS collaboration, Analysis of events with b-jets and a pair of leptons of the same charge in pp collisions at \( \sqrt{s}=8 \) TeV with the ATLAS detector, JHEP 10 (2015) 150 [arXiv:1504.04605] [INSPIRE].
CMS collaboration, Inclusive search for a vector-like T quark with charge 2/3 in pp collisions at \( \sqrt{s}=8 \) TeV, Phys. Lett. B 729 (2014) 149 [arXiv:1311.7667] [INSPIRE].
CMS collaboration, Search for vector-like T quarks decaying to top quarks and Higgs bosons in the all-hadronic channel using jet substructure, JHEP 06 (2015) 080 [arXiv:1503.01952] [INSPIRE].
CMS collaboration, Search for vector-like top quark partners produced in association with Higgs bosons in the diphoton final state, CMS-PAS-B2G-14-003, CERN, Geneva Switzerland (2014).
CMS collaboration, Search for pair-produced vector-like top quark partners decaying to bW in the fully hadronic channel using jet substructure at 8 TeV, CMS-PAS-B2G-12-013, CERN, Geneva Switzerland (2012).
CMS collaboration, Search for vector-like quarks in final states with a single lepton and jets in pp collisions at \( \sqrt{s}=8 \) TeV, CMS-PAS-B2G-12-017, CERN, Geneva Switzerland (2012).
J.M. Butterworth, A.R. Davison, M. Rubin and G.P. Salam, Jet substructure as a new Higgs search channel at the LHC, Phys. Rev. Lett. 100 (2008) 242001 [arXiv:0802.2470] [INSPIRE].
S.D. Ellis, C.K. Vermilion and J.R. Walsh, Techniques for improved heavy particle searches with jet substructure, Phys. Rev. D 80 (2009) 051501 [arXiv:0903.5081] [INSPIRE].
D. Krohn, J. Thaler and L.-T. Wang, Jet trimming, JHEP 02 (2010) 084 [arXiv:0912.1342] [INSPIRE].
S.D. Ellis, C.K. Vermilion and J.R. Walsh, Recombination algorithms and jet substructure: pruning as a tool for heavy particle searches, Phys. Rev. D 81 (2010) 094023 [arXiv:0912.0033] [INSPIRE].
T. Plehn and M. Spannowsky, Top tagging, J. Phys. G 39 (2012) 083001 [arXiv:1112.4441] [INSPIRE].
E. Conte, B. Fuks and G. Serret, MadAnalysis 5, a user-friendly framework for collider phenomenology, Comput. Phys. Commun. 184 (2013) 222 [arXiv:1206.1599] [INSPIRE].
ATLAS and CMS collaborations, M. Negrini, Review of physics results using jet substructure techniques in LHC run 1, EPJ Web Conf. 90 (2015) 09001 [INSPIRE].
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Fichet, S., von Gersdorff, G., Pontón, E. et al. The global Higgs as a signal for compositeness at the LHC. J. High Energ. Phys. 2017, 12 (2017). https://doi.org/10.1007/JHEP01(2017)012
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DOI: https://doi.org/10.1007/JHEP01(2017)012