Abstract
Six top signatures provide a novel probe of new physics. We discuss production of six top quarks as the decay products of a pair of top partners in the setting of a composite Higgs model, and argue that the six top signal may generically provide one of the first final states to show a discrepancy. We construct an analysis based on quantities such as HT and the numbers of jets which are tagged as boosted tops, W s, or containing b-tags, and show that the LHC with 3 ab−1 can discover top partners with masses up to around 2.5 TeV in the six top signature.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
J.L. Feng, Naturalness and the status of supersymmetry, Ann. Rev. Nucl. Part. Sci.63 (2013) 351 [arXiv:1302.6587] [INSPIRE].
G.F. Giudice, Naturalness after LHC8, PoS(EPS-HEP 2013)163 [arXiv:1307.7879] [INSPIRE].
G. Altarelli, The Higgs: so simple yet so unnatural, Phys. ScriptaT 158 (2013) 014011 [arXiv:1308.0545] [INSPIRE].
M. Farina, D. Pappadopulo and A. Strumia, A modified naturalness principle and its experimental tests, JHEP08 (2013) 022 [arXiv:1303.7244] [INSPIRE].
A. de Gouvêa, D. Hernandez and T.M.P. Tait, Criteria for natural hierarchies, Phys. Rev.D 89 (2014) 115005 [arXiv:1402.2658] [INSPIRE].
C. Csáki et al., Naturalness sum rules and their collider tests, JHEP05 (2019) 132 [arXiv:1811.01961] [INSPIRE].
C.-R. Chen et al., Testing naturalness at 100 TeV, JHEP09 (2017) 129 [arXiv:1705.07743] [INSPIRE].
R. Contino and G. Servant, Discovering the top partners at the LHC using same-sign dilepton final states, JHEP06 (2008) 026 [arXiv:0801.1679] [INSPIRE].
A. Atre et al., Model-independent searches for new quarks at the LHC, JHEP08 (2011) 080 [arXiv:1102.1987] [INSPIRE].
G. Cacciapaglia et al., Heavy vector-like top partners at the LHC and flavour constraints, JHEP03 (2012) 070 [arXiv:1108.6329] [INSPIRE].
A. De Simone, O. Matsedonskyi, R. Rattazzi and A. Wulzer, A first top partner hunter’s guide, JHEP04 (2013) 004 [arXiv:1211.5663] [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. 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].
M. Backovíc, T. Flacke, S.J. Lee and G. Perez, LHC top partner searches beyond the 2 TeV mass region, JHEP09 (2015) 022 [arXiv:1409.0409] [INSPIRE].
O. Matsedonskyi, G. Panico and A. Wulzer, On the interpretation of top partners searches, JHEP12 (2014) 097 [arXiv:1409.0100] [INSPIRE].
N. Bizot, G. Cacciapaglia and T. Flacke, Common exotic decays of top partners, JHEP06 (2018) 065 [arXiv:1803.00021] [INSPIRE].
S.-S. Xue, An effective strong-coupling theory of composite particles in UV-domain, JHEP05 (2017) 146 [arXiv:1601.06845] [INSPIRE].
K.-P. Xie, G. Cacciapaglia and T. Flacke, Exotic decays of top partners with charge 5/3: bounds and opportunities, arXiv:1907.05894 [INSPIRE].
B. Lillie, J. Shu and T.M.P. Tait, Top compositeness at the Tevatron and LHC, JHEP04 (2008) 087 [arXiv:0712.3057] [INSPIRE].
A. Pomarol and J. Serra, Top quark compositeness: feasibility and implications, Phys. Rev.D 78 (2008) 074026 [arXiv:0806.3247] [INSPIRE].
C.-R. Chen, W. Klemm, V. Rentala and K. Wang, Color sextet scalars at the CERN Large Hadron Collider, Phys. Rev.D 79 (2009) 054002 [arXiv:0811.2105] [INSPIRE].
K. Kumar, T.M.P. Tait and R. Vega-Morales, Manifestations of top compositeness at colliders, JHEP05 (2009) 022 [arXiv:0901.3808] [INSPIRE].
T. Gregoire, E. Katz and V. Sanz, Four top quarks in extensions of the standard model, Phys. Rev.D 85 (2012) 055024 [arXiv:1101.1294] [INSPIRE].
A. Deandrea and N. Deutschmann, Multi-tops at the LHC, JHEP08 (2014) 134 [arXiv:1405.6119] [INSPIRE].
CMS collaboration, Search for standard model production of four top quarks with same-sign and multilepton final states in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, Eur. Phys. J.C 78 (2018) 140 [arXiv:1710.10614] [INSPIRE].
ATLAS collaboration, Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, Phys. Rev.D 99 (2019) 052009 [arXiv:1811.02305] [INSPIRE].
C. Csáki, T. Ma and J. Shu, Trigonometric parity for composite Higgs models, Phys. Rev. Lett.121 (2018) 231801 [arXiv:1709.08636] [INSPIRE].
T.A. Ryttov and F. Sannino, Ultra minimal technicolor and its dark matter TIMP, Phys. Rev.D 78 (2008) 115010 [arXiv:0809.0713] [INSPIRE].
J. Galloway, J.A. Evans, M.A. Luty and R.A. Tacchi, Minimal conformal technicolor and precision electroweak tests, JHEP10 (2010) 086 [arXiv:1001.1361] [INSPIRE].
B. Gripaios, A. Pomarol, F. Riva and J. Serra, Beyond the minimal composite Higgs model, JHEP04 (2009) 070 [arXiv:0902.1483] [INSPIRE].
M. Frigerio, A. Pomarol, F. Riva and A. Urbano, Composite scalar dark matter, JHEP07 (2012) 015 [arXiv:1204.2808] [INSPIRE].
J. Serra and R. Torre, Neutral naturalness from the brother-Higgs model, Phys. Rev.D 97 (2018) 035017 [arXiv:1709.05399] [INSPIRE].
T. Ma and G. Cacciapaglia, Fundamental composite 2HDM: SU(N) with 4 flavours, JHEP03 (2016) 211 [arXiv:1508.07014] [INSPIRE].
Y. Wu, T. Ma, B. Zhang and G. Cacciapaglia, Composite dark matter and Higgs, JHEP11 (2017) 058 [arXiv:1703.06903] [INSPIRE].
G. Cacciapaglia, S. Vatani, T. Ma and Y. Wu, Towards a fundamental safe theory of composite Higgs and Dark Matter, arXiv:1812.04005 [INSPIRE].
ATLAS collaboration, Search for supersymmetry at \( \sqrt{s} \) = 13 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector, Eur. Phys. J.C 76 (2016) 259 [arXiv:1602.09058] [INSPIRE].
ATLAS collaboration, Search for production of vector-like top quark pairs and of four top quarks in the lepton-plus-jets final state in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, ATLAS-CONF-2016-013 (2016).
ATLAS collaboration, Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1of \( \sqrt{s} \) = 13 TeV pp collision data with the ATLAS detector, JHEP09 (2017) 084 [Erratum ibid.08 (2019) 121] [arXiv:1706.03731] [INSPIRE].
ATLAS collaboration, Search for supersymmetry in events with four or more leptons in \( \sqrt{s} \) = 13 TeV pp collisions with ATLAS, Phys. Rev.D 98 (2018) 032009 [arXiv:1804.03602] [INSPIRE].
CMS collaboration, Search for electroweak production of charginos and neutralinos in multilepton final states in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, JHEP03 (2018) 166 [arXiv:1709.05406] [INSPIRE].
CMS collaboration, Search for new phenomena with multiple charged leptons in proton-proton collisions at \( \sqrt{s} \) = 13 TeV, Eur. Phys. J.C 77 (2017) 635 [arXiv:1701.06940] [INSPIRE].
ATLAS collaboration, A search for t \( \overline{t} \)resonances using lepton-plus-jets events in proton-proton collisions at \( \sqrt{s} \) = 8 TeV with the ATLAS detector, JHEP08 (2015) 148 [arXiv:1505.07018] [INSPIRE].
ATLAS collaboration, Search for direct top squark pair production in final states with two leptons in \( \sqrt{s} \) = 13 TeV pp collisions with the ATLAS detector, Eur. Phys. J.C 77 (2017) 898 [arXiv:1708.03247] [INSPIRE].
ATLAS collaboration, Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, JHEP12 (2017) 085 [arXiv:1709.04183] [INSPIRE].
ATLAS collaboration, Search for top-squark pair production in final states with one lepton, jets and missing transverse momentum using 36 fb−1of \( \sqrt{s} \) = 13 TeV pp collision data with the ATLAS detector, JHEP06 (2018) 108 [arXiv:1711.11520] [INSPIRE].
M. Drees et al., CheckMATE: confronting your favourite new physics model with LHC data, Comput. Phys. Commun.187 (2015) 227 [arXiv:1312.2591] [INSPIRE].
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, JHEP07 (2014) 079 [arXiv:1405.0301] [INSPIRE].
T. Sjöstrand et al., An introduction to PYTHIA 8.2, Comput. Phys. Commun.191 (2015) 159 [arXiv:1410.3012] [INSPIRE].
ATLAS collaboration, Search for heavy particles decaying into top-quark pairs using lepton-plus-jets events in proton-proton collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector, Eur. Phys. J.C 78 (2018) 565 [arXiv:1804.10823] [INSPIRE].
P.M. Nadolsky et al., Implications of CTEQ global analysis for collider observables, Phys. Rev.D 78 (2008) 013004 [arXiv:0802.0007] [INSPIRE].
P. Artoisenet, R. Frederix, O. Mattelaer and R. Rietkerk, Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations, JHEP03 (2013) 015 [arXiv:1212.3460] [INSPIRE].
DELPHES 3 collaboration, DELPHES 3, a modular framework for fast simulation of a generic collider experiment, JHEP02 (2014) 057 [arXiv:1307.6346] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, Fast Jet user manual, Eur. Phys. J.C 72 (2012) 1896 [arXiv:1111.6097] [INSPIRE].
ATLAS collaboration, Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at \( \sqrt{s} \) = 13 TeV, Eur. Phys. J.C 78 (2018) 199 [arXiv:1710.09748] [INSPIRE].
CMS collaboration, Measurements of the t \( \overline{t} \)production cross section in lepton+jets final states in pp collisions at 8 TeV and ratio of 8 to 7 TeV cross sections, Eur. Phys. J.C 77 (2017) 15 [arXiv:1602.09024] [INSPIRE].
M. Cacciari, G.P. Salam and G. Soyez, The anti-kt jet clustering algorithm, JHEP04 (2008) 063 [arXiv:0802.1189] [INSPIRE].
CMS collaboration, CMS Phase 1 heavy flavour identification performance and developments, CMS-DP-2017-013 (2017).
T. Plehn and M. Spannowsky, Top tagging, J. Phys.G 39 (2012) 083001 [arXiv:1112.4441] [INSPIRE].
G. Kasieczka, T. Plehn, M. Russell and T. Schell, Deep-learning top taggers or the end of QCD?, JHEP05 (2017) 006 [arXiv:1701.08784] [INSPIRE].
A. Butter, G. Kasieczka, T. Plehn and M. Russell, Deep-learned top tagging with a Lorentz layer, Sci Post Phys.5 (2018) 028 [arXiv:1707.08966] [INSPIRE].
M. Dasgupta, M. Guzzi, J. Rawling and G. Soyez, Top tagging: an analytical perspective, JHEP09 (2018) 170 [arXiv:1807.04767] [INSPIRE].
S. Macaluso and D. Shih, Pulling out all the tops with computer vision and deep learning, JHEP10 (2018) 121 [arXiv:1803.00107] [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: 1812.11286
Rights and permissions
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, 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 licence, and indicate if changes were made.
The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/.
About this article
Cite this article
Han, H., Huang, L., Ma, T. et al. Six top messages of new physics at the LHC. J. High Energ. Phys. 2019, 8 (2019). https://doi.org/10.1007/JHEP10(2019)008
Received:
Revised:
Accepted:
Published:
DOI: https://doi.org/10.1007/JHEP10(2019)008