skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Loop induced single top partner production and decay at the LHC

Abstract

Most searches for top partners, T , are concerned with top partner pair production. However, as these bounds become increasingly stringent, the LHC energy will saturate and single top partner production will become more important. In this paper we study the novel signature of the top partner produced in association with the SM top, p p T t ¯ + t T ¯ , in a model where the Standard Model (SM) is extended by a vector-like SU(2)L singlet fermion top partner and a real, SM gauge singlet scalar, S. In this model, p p T t ¯ + t T ¯ production is possible through loops mediated by the scalar singlet. We find that, with reasonable coupling strengths, the production rate of this channel can dominate top partner pair production at top partner masses of mT ≳ 1.5 TeV. In addition, this model allows for the exotic decay modes T → tg, T → tγ, and T → tS. In much of the parameter space the loop induced decay T → tg dominates and the top partner is quite long lived. New search strategies are necessary to cover these decay modes. We project the the sensitivity of the high luminosity LHC to p p T t ¯ + t T ¯ via a realistic collider study. We find with 3 ab-1, the LHC is sensitive to this process for masses mT ≲ 2 TeV. In addition, we provide appendices detailing the renormalization of this model.

Authors:
 [1];  [1]
  1. Univ. of Kansas, Lawrence, KS (United States). Dept. of Physics and Astronomy
Publication Date:
Research Org.:
Univ. of Kansas, Lawrence, KS (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1512400
Grant/Contract Number:  
SC0017988
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2018; Journal Issue: 5; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Higgs physics

Citation Formats

Kim, Jeong Han, and Lewis, Ian M. Loop induced single top partner production and decay at the LHC. United States: N. p., 2018. Web. doi:10.1007/jhep05(2018)095.
Kim, Jeong Han, & Lewis, Ian M. Loop induced single top partner production and decay at the LHC. United States. doi:10.1007/jhep05(2018)095.
Kim, Jeong Han, and Lewis, Ian M. Tue . "Loop induced single top partner production and decay at the LHC". United States. doi:10.1007/jhep05(2018)095. https://www.osti.gov/servlets/purl/1512400.
@article{osti_1512400,
title = {Loop induced single top partner production and decay at the LHC},
author = {Kim, Jeong Han and Lewis, Ian M.},
abstractNote = {Most searches for top partners, T , are concerned with top partner pair production. However, as these bounds become increasingly stringent, the LHC energy will saturate and single top partner production will become more important. In this paper we study the novel signature of the top partner produced in association with the SM top, p p → T t ¯ + t T ¯ , in a model where the Standard Model (SM) is extended by a vector-like SU(2)L singlet fermion top partner and a real, SM gauge singlet scalar, S. In this model, p p → T t ¯ + t T ¯ production is possible through loops mediated by the scalar singlet. We find that, with reasonable coupling strengths, the production rate of this channel can dominate top partner pair production at top partner masses of mT ≳ 1.5 TeV. In addition, this model allows for the exotic decay modes T → tg, T → tγ, and T → tS. In much of the parameter space the loop induced decay T → tg dominates and the top partner is quite long lived. New search strategies are necessary to cover these decay modes. We project the the sensitivity of the high luminosity LHC to p p → T t ¯ + t T ¯ via a realistic collider study. We find with 3 ab-1, the LHC is sensitive to this process for masses mT ≲ 2 TeV. In addition, we provide appendices detailing the renormalization of this model.},
doi = {10.1007/jhep05(2018)095},
journal = {Journal of High Energy Physics (Online)},
number = 5,
volume = 2018,
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

Figures / Tables:

Figure 1 Figure 1: Top partner decay diagrams in the limit that $v$ → 0 and EW symmetry is restored. Counterterms and external flavor changing self-energies are not shown.

Save / Share:

Works referenced in this record:

On the interpretation of Top Partners searches
journal, December 2014

  • Matsedonskyi, Oleksii; Panico, Giuliano; Wulzer, Andrea
  • Journal of High Energy Physics, Vol. 2014, Issue 12
  • DOI: 10.1007/JHEP12(2014)097

Little Higgs models and custodial SU ( 2 )
journal, February 2004


Excited Quark Production at Hadron Colliders
journal, August 1987

  • Baur, U.; Hinchliffe, I.; Zeppenfeld, D.
  • International Journal of Modern Physics A, Vol. 02, Issue 04
  • DOI: 10.1142/S0217751X87000661

Simplified models for Higgs physics: singlet scalar and vector-like quark phenomenology
journal, July 2016

  • Dolan, Matthew J.; Hewett, J. L.; Krämer, M.
  • Journal of High Energy Physics, Vol. 2016, Issue 7
  • DOI: 10.1007/JHEP07(2016)039

Generating Feynman diagrams and amplitudes with FeynArts 3
journal, November 2001


Higgs friends and counterfeits at hadron colliders
journal, June 2011

  • Fox, Patrick J.; Tucker-Smith, David; Weiner, Neal
  • Journal of High Energy Physics, Vol. 2011, Issue 6
  • DOI: 10.1007/JHEP06(2011)127

LHAPDF6: parton density access in the LHC precision era
journal, March 2015


Production and decay properties of ultra-heavy quarks
journal, November 1986


Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications
journal, September 2014

  • Ellis, Sebastian A. R.; Godbole, Rohini M.; Gopalakrishna, Shrihari
  • Journal of High Energy Physics, Vol. 2014, Issue 9
  • DOI: 10.1007/JHEP09(2014)130

Long-Lived Heavy Quarks: A Review
journal, January 2013

  • Buchkremer, Mathieu; Schmidt, Alexander
  • Advances in High Energy Physics, Vol. 2013
  • DOI: 10.1155/2013/690254

Renormalization of the quark mixing matrix
journal, December 1990


Singlet scalar resonances and the diphoton excess
journal, April 2016


Displaced Supersymmetry
journal, July 2012

  • Graham, Peter W.; Kaplan, David E.; Rajendran, Surjeet
  • Journal of High Energy Physics, Vol. 2012, Issue 7
  • DOI: 10.1007/JHEP07(2012)149

FeynRules – Feynman rules made easy
journal, September 2009


PYTHIA 6.4 physics and manual
journal, May 2006


Hunting composite vector resonances at the LHC: naturalness facing data
journal, December 2014


Deep-learning top taggers or the end of QCD?
journal, May 2017

  • Kasieczka, Gregor; Plehn, Tilman; Russell, Michael
  • Journal of High Energy Physics, Vol. 2017, Issue 5
  • DOI: 10.1007/JHEP05(2017)006

Colored resonant signals at the LHC: largest rate and simplest topology
journal, December 2010


The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
journal, July 2014

  • Alwall, J.; Frederix, R.; Frixione, S.
  • Journal of High Energy Physics, Vol. 2014, Issue 7
  • DOI: 10.1007/JHEP07(2014)079

NNLO corrections to top-pair production at hadron colliders: the all-fermionic scattering channels
journal, December 2012

  • Czakon, Michal; Mitov, Alexander
  • Journal of High Energy Physics, Vol. 2012, Issue 12
  • DOI: 10.1007/JHEP12(2012)054

Strong electroweak phase transitions in the Standard Model with a singlet
journal, January 2012


FastJet user manual: (for version 3.0.2)
journal, March 2012


The minimal composite Higgs model
journal, July 2005


Singlet-like Higgs bosons at present and future colliders
journal, November 2015

  • Buttazzo, Dario; Sala, Filippo; Tesi, Andrea
  • Journal of High Energy Physics, Vol. 2015, Issue 11
  • DOI: 10.1007/JHEP11(2015)158

Superheavy-quarkonium production and decays: A new Higgs-boson signal
journal, June 1987


Efficient identification of boosted semileptonic top quarks at the LHC
journal, March 2011


Stopping gluinos
journal, September 2007


CP-even scalar boson production via gluon fusion at the LHC
journal, September 2016

  • Anastasiou, Charalampos; Duhr, Claude; Dulat, Falko
  • Journal of High Energy Physics, Vol. 2016, Issue 9
  • DOI: 10.1007/JHEP09(2016)037

Electroweak phase transition in an extension of the standard model with a real Higgs singlet
journal, June 2005

  • Ham, S. W.; Jeong, Y. S.; Oh, S. K.
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 31, Issue 8
  • DOI: 10.1088/0954-3899/31/8/017

Search for excited quarks
journal, June 1984


Signals for heavy exotics at hadron colliders and supercolliders
journal, December 1990


Boosted event topologies from TeV scale light quark composite partners
journal, April 2015

  • Backović, Mihailo; Flacke, Thomas; Kim, Jeong Han
  • Journal of High Energy Physics, Vol. 2015, Issue 4
  • DOI: 10.1007/JHEP04(2015)082

Implications of a high-mass diphoton resonance for heavy quark searches
journal, November 2016

  • Banerjee, Shankha; Barducci, Daniele; Bélanger, Geneviève
  • Journal of High Energy Physics, Vol. 2016, Issue 11
  • DOI: 10.1007/JHEP11(2016)154

The minimal composite Higgs model and electroweak precision tests
journal, May 2006


Testing electroweak baryogenesis with future colliders
journal, November 2014

  • Curtin, David; Meade, Patrick; Yu, Chiu-Tien
  • Journal of High Energy Physics, Vol. 2014, Issue 11
  • DOI: 10.1007/JHEP11(2014)127

LHC benchmark scenarios for the real Higgs singlet extension of the standard model
journal, May 2016


FeynRules  2.0 — A complete toolbox for tree-level phenomenology
journal, August 2014

  • Alloul, Adam; Christensen, Neil D.; Degrande, Céline
  • Computer Physics Communications, Vol. 185, Issue 8
  • DOI: 10.1016/j.cpc.2014.04.012

Search for single production of the vector-like top partner at the 14 TeV LHC
journal, September 2017


Radiative corrections to masses and couplings in universal extra dimensions
journal, March 2018

  • Freitas, Ayres; Kong, Kyoungchul; Wiegand, Daniel
  • Journal of High Energy Physics, Vol. 2018, Issue 3
  • DOI: 10.1007/JHEP03(2018)093

A first top partner hunter’s guide
journal, April 2013

  • De Simone, Andrea; Matsedonskyi, Oleksii; Rattazzi, Riccardo
  • Journal of High Energy Physics, Vol. 2013, Issue 4
  • DOI: 10.1007/JHEP04(2013)004

Phenomenology of a 750 GeV singlet
journal, February 2016

  • Falkowski, Adam; Slone, Oren; Volansky, Tomer
  • Journal of High Energy Physics, Vol. 2016, Issue 2
  • DOI: 10.1007/JHEP02(2016)152

Novel formulations of CKM matrix renormalization
conference, January 2009

  • Kniehl, Bernd A.; Sirlin, Alberto; Marshak, Marvin L.
  • 10TH CONFERENCE ON THE INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS, AIP Conference Proceedings
  • DOI: 10.1063/1.3293809

One-loop corrections to the Higgs self-couplings in the singlet extension
journal, April 2017


Heavy-light decay topologies as a new strategy to discover a heavy gluon
journal, January 2012

  • Bini, Cesare; Contino, Roberto; Vignaroli, Natascia
  • Journal of High Energy Physics, Vol. 2012, Issue 1
  • DOI: 10.1007/JHEP01(2012)157

The fate of long-lived superparticles with hadronic decays after LHC Run 1
journal, June 2015


Single production of the top partner in the T → tZ channel at the LHeC
journal, May 2017


Measuring boosted tops in semi-leptonic $ t\overline{t} $ events for the standard model and beyond
journal, April 2014

  • Backović, Mihailo; Gabizon, Ofir; Juknevich, José
  • Journal of High Energy Physics, Vol. 2014, Issue 4
  • DOI: 10.1007/JHEP04(2014)176

Interpreting a 750 GeV diphoton resonance
journal, July 2016

  • Gupta, Rick S.; Jäger, Sebastian; Kats, Yevgeny
  • Journal of High Energy Physics, Vol. 2016, Issue 7
  • DOI: 10.1007/JHEP07(2016)145

Singlet Higgs phenomenology and the electroweak phase transition
journal, August 2007

  • Profumo, Stefano; Ramsey-Musolf, Michael J.; Shaughnessy, Gabe
  • Journal of High Energy Physics, Vol. 2007, Issue 08
  • DOI: 10.1088/1126-6708/2007/08/010

The global Higgs as a signal for compositeness at the LHC
journal, January 2017

  • Fichet, Sylvain; von Gersdorff, Gero; Pontón, Eduardo
  • Journal of High Energy Physics, Vol. 2017, Issue 1
  • DOI: 10.1007/JHEP01(2017)012

Echoes of a hidden valley at hadron colliders
journal, August 2007


Di-Higgs enhancement by neutral scalar as probe of new colored sector
journal, May 2017


Single top partner production in the Higgs to diphoton channel in the Littlest Higgs Model with T -parity
journal, February 2016


On the interpretation of a possible ∼ 750 GeV particle decaying into γγ
journal, March 2016

  • Ellis, John; Ellis, Sebastian A. R.; Quevillon, Jérémie
  • Journal of High Energy Physics, Vol. 2016, Issue 3
  • DOI: 10.1007/JHEP03(2016)176

Top++: A program for the calculation of the top-pair cross-section at hadron colliders
journal, November 2014


Status of the Higgs singlet extension of the standard model after LHC run 1
journal, March 2015


Prospects for top-prime quark discovery at the Tevatron
journal, June 2009


Singlet extensions of the standard model at LHC Run 2: benchmarks and comparison with the NMSSM
journal, June 2016

  • Costa, Raul; Mühlleitner, Margarete; Sampaio, Marco O. P.
  • Journal of High Energy Physics, Vol. 2016, Issue 6
  • DOI: 10.1007/JHEP06(2016)034

Searches for vector-like quarks at future colliders and implications for composite Higgs models with dark matter
journal, March 2018

  • Chala, Mikael; Gröber, Ramona; Spannowsky, Michael
  • Journal of High Energy Physics, Vol. 2018, Issue 3
  • DOI: 10.1007/JHEP03(2018)040

Excited quarks and leptons
journal, November 1984


Single vectorlike quark production at the LHC
journal, April 2012


Gluons to Diphotons via New Particles with Half the Signal’s Invariant Mass
journal, August 2016


Beyond the minimal top partner decay
journal, September 2015


Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation
journal, April 2012


A novel formulation of Cabibbo–Kobayashi–Maskawa matrix renormalization
journal, March 2009


A fermionic top partner: naturalness and the LHC
journal, July 2012

  • Berger, Joshua; Hubisz, Jay; Perelstein, Maxim
  • Journal of High Energy Physics, Vol. 2012, Issue 7
  • DOI: 10.1007/JHEP07(2012)016

NNLO corrections to top pair production at hadron colliders: the quark-gluon reaction
journal, January 2013


Scalar explanation of diphoton excess at LHC
journal, June 2016


Radiative corrections to the Higgs boson couplings in the model with an additional real singlet scalar field
journal, June 2016


Exotic bound state production at hadron colliders
journal, July 1993


    Works referencing / citing this record:

    Shedding light on top partner at the LHC
    journal, January 2019

    • Alhazmi, Haider; Kim, Jeong Han; Kong, Kyoungchul
    • Journal of High Energy Physics, Vol. 2019, Issue 1
    • DOI: 10.1007/jhep01(2019)139

    Vector-like quarks with non-renormalizable interactions
    journal, January 2020

    • Criado, J. C.; Pérez-Victoria, M.
    • Journal of High Energy Physics, Vol. 2020, Issue 1
    • DOI: 10.1007/jhep01(2020)057

    A light scalar in the Minimal Dilaton Model in light of the LHC constraints
    journal, February 2019


    Search for single production of a top quark partner via the T t h and h W W * channels at the LHC
    journal, July 2019


    Nonstandard signatures of vectorlike quarks in a leptophobic 221 model
    journal, June 2019