Strong tW scattering at the LHC

Dror, Jeff Asaf; Farina, Marco; Salvioni, Ennio; Serra, Javi

doi:10.1007/JHEP01(2016)071

Title: Strong tW scattering at the LHC

Abstract

Deviations of the top electroweak couplings from their Standard Model values imply that certain amplitudes for the scattering of third generation fermions and longitudinally polarized vector bosons or Higgses diverge quadratically with momenta. This high-energy growth is a genuine signal of models where the top quark is strongly coupled to the sector responsible for electroweak symmetry breaking. We propose to profit from the high energies accessible at the LHC to enhance the sensitivity to non-standard top-Z couplings, which are currently very weakly constrained. To demonstrate the effectiveness of the approach, we perform a detailed analysis of tW → tW scattering, which can be probed at the LHC via pp→$$t\bar{t}$$Wj. By recasting a CMS analysis at 8 TeV, we derive the strongest direct bounds to date on the Ztt couplings. We also design a dedicated search at 13 TeV that exploits the distinctive features of the $$t\bar{t}$$Wj signal. Lastly, we present other scattering processes in the same class that could provide further tests of the top-Higgs sector.

Authors:

Dror, Jeff Asaf ^[1]; Farina, Marco ^[2]; Salvioni, Ennio ^[3]; Serra, Javi ^[4]

Cornell Univ., Ithaca, NY (United States)
Cornell Univ., Ithaca, NY (United States); Rutgers Univ., Piscataway, NJ (United States)
Univ. of California, Davis, CA (United States)
Univ. di Padova and INFN, Padova (Italy); European Organization for Nuclear Research (CERN), Geneva (Switzerland)

Publication Date:: 2016-01-13

Research Org.:: Rutgers Univ., Piscataway, NJ (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1327317

Grant/Contract Number:: SC0003883

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: 2016; Journal Issue: 1; 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; heavy quark physics

Citation Formats


                    Dror, Jeff Asaf, Farina, Marco, Salvioni, Ennio, and Serra, Javi. Strong tW scattering at the LHC.  United States: N. p., 2016. 
Web.  doi:10.1007/JHEP01(2016)071.

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                    Dror, Jeff Asaf, Farina, Marco, Salvioni, Ennio, & Serra, Javi. Strong tW scattering at the LHC.  United States.  https://doi.org/10.1007/JHEP01(2016)071

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                    Dror, Jeff Asaf, Farina, Marco, Salvioni, Ennio, and Serra, Javi. Wed .  
"Strong tW scattering at the LHC".  United States.  https://doi.org/10.1007/JHEP01(2016)071.  https://www.osti.gov/servlets/purl/1327317.

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@article{osti_1327317,

  title        = {Strong tW scattering at the LHC},

  author       = {Dror, Jeff Asaf and Farina, Marco and Salvioni, Ennio and Serra, Javi},

  abstractNote = {Deviations of the top electroweak couplings from their Standard Model values imply that certain amplitudes for the scattering of third generation fermions and longitudinally polarized vector bosons or Higgses diverge quadratically with momenta. This high-energy growth is a genuine signal of models where the top quark is strongly coupled to the sector responsible for electroweak symmetry breaking. We propose to profit from the high energies accessible at the LHC to enhance the sensitivity to non-standard top-Z couplings, which are currently very weakly constrained. To demonstrate the effectiveness of the approach, we perform a detailed analysis of tW → tW scattering, which can be probed at the LHC via pp→$t\bar{t}$Wj. By recasting a CMS analysis at 8 TeV, we derive the strongest direct bounds to date on the Ztt couplings. We also design a dedicated search at 13 TeV that exploits the distinctive features of the $t\bar{t}$Wj signal. Lastly, we present other scattering processes in the same class that could provide further tests of the top-Higgs sector.},

  doi          = {10.1007/JHEP01(2016)071},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 1,

  volume       = 2016,

  place        = {United States},

  year         = {2016},

  month        = {1}

}

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Scalar dark matter search at the LHC through flavor-changing neutral current top decay

Journal Article Tong, Li ; Shafi, Qaisar - Physical Review. D, Particles Fields

We discuss an extended standard model electroweak sector which contains a stable scalar dark matter particle, the D boson. To search for the D boson at the LHC we exploit the flavor-changing neutral current top quark decay, t{yields}cDD, mediated by the lightest standard model-like Higgs h{sup 0} in a two Higgs doublet model framework. The branching ratio for t{yields}cDD in this case can be as high as 10{sup -3}, after taking into account constraints arising from the D boson relic abundance. With an integrated luminosity of 10(100) fb{sup -1}, the 14 TeV LHC can explore values of this branching ratiomore »« less
https://doi.org/10.1103/PHYSREVD.83.095017

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Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC journal, September 2012

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC journal, September 2012

Constraining couplings of top quarks to the Z boson in t t ¯ $$ t\overline{t} $$ + Z production at the LHC journal, July 2014

The TeV physics of strongly interacting W's and Z's journal, January 1985

Strong double higgs production at the LHC journal, May 2010

The strongly-interacting light Higgs journal, June 2007

Composite Higgses journal, May 2014

Top compositeness at the Tevatron and LHC journal, April 2008

Manifestations of top compositeness at colliders journal, May 2009

Unitarity Bound on the Scale of Fermion Mass Generation journal, November 1987

Single top and Higgs associated production as a probe of the $Ht\overline{t}$ coupling sign at the LHC journal, January 2013

Measurement of top quark–antiquark pair production in association with a W or Z boson in pp collisions at $$\sqrt{s} = 8$$ s = 8 $$\,\text {TeV}$$ TeV journal, September 2014

Higgs windows to new physics through d = 6 operators: constraints and one-loop anomalous dimensions journal, November 2013

Dynamical symmetry breaking and universality breakdown journal, June 1990

Constraining the dipole moments of the top quark journal, April 2012

Holographic Twin Higgs Model journal, May 2015

The composite twin Higgs scenario journal, August 2015

Higgs couplings and precision electroweak data journal, January 2013

Renormalization group constraints on new top interactions from electroweak precision data journal, September 2015

Probing anomalous t t ¯ Z $$ t\overline{t}Z $$ interactions with rare meson decays journal, February 2015

Search for H → γ γ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector journal, January 2015

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into $$\varvec{b\bar{b}}$$ b b ¯ in $$\varvec{pp}$$ p p collisions at $$\sqrt{\mathbf{s}}= \varvec{8{{\,\mathrm TeV}}}$$ s = 8 T e V with the ATLAS detector journal, July 2015

Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector journal, October 2015

Theoretical constraints on additional Higgs bosons in light of the 126 GeV Higgs journal, May 2014

Top-quark charge asymmetry and polarization in t t ¯ W ± production at the LHC journal, September 2014

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

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

PYTHIA 6.4 physics and manual journal, May 2006

Parton distributions with LHC data journal, February 2013

QCD radiation in the production of heavy colored particles at the LHC journal, February 2009

Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through O ( α S 4 ) journal, June 2013

Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √ s = 8 TeV journal, June 2015

Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons journal, June 2015

HATHOR – HAdronic Top and Heavy quarks crOss section calculatoR journal, April 2011

LHC top partner searches beyond the 2 TeV mass region journal, September 2015

Direct constraints on the top-Higgs coupling from the 8 TeV LHC data journal, July 2013

Di-Higgs phenomenology in t t ¯ h h : The forgotten channel journal, April 2015

Composite Higgs boson pair production at the LHC journal, June 2011

Unitarity Bound on the Scale of Fermion Mass Generation journal, April 1988

Observation of a new Boson at a mass of 125 gev with the cms Experiment at the lhc conference, March 2015

Performance of Electron Reconstruction and Selection with the CMS Detector in Proton-Proton Collisions at √s = 8 TeV text, January 2015

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

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC text, January 2018

Constraining the dipole moments of the top quark text, January 2012

Top Compositeness at the Tevatron and LHC text, January 2007

QCD radiation in the production of heavy colored particles at the LHC text, January 2008

Parton distributions with LHC data text, January 2012

Direct constraints on the top-Higgs coupling from the 8 TeV LHC data text, January 2013

A Holographic Twin Higgs Model text, January 2014

Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons preprint, January 2015

A custodial symmetry for Zbb text, January 2006

New physics from high energy tops journal, January 2019

Large NLO corrections in t t ¯ W ± $$ t\overline{t}{W}^{\pm } $$ and t t ¯ t t ¯ $$ t\overline{t}t\overline{t} $$ hadroproduction from supposedly subleading EW contributions journal, February 2018

Probing top quark neutral couplings in the Standard Model Effective Field Theory at NLO in QCD journal, May 2016

Combinations of single-top-quark production cross-section measurements and |fLVVtb| determinations at s $$ \sqrt{s} $$ = 7 and 8 TeV with the ATLAS and CMS experiments journal, May 2019

On the validity of the effective field theory approach to SM precision tests journal, July 2016

Precision probes of QCD at high energies journal, July 2017

Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections journal, August 2019

Resolving gluon fusion loops at current and future hadron colliders journal, September 2016

Single-top associated production with a Z or H boson at the LHC: the SMEFT interpretation journal, October 2018

Top-quark electroweak interactions at high energy journal, October 2019

The other effective fermion compositeness journal, November 2017

Helicity selection rules and noninterference for BSM amplitudes journal, March 2017

Effective field theory in the top sector: Do multijets help? journal, February 2019

Measurement of the t t ¯ Z and t t ¯ W cross sections in proton-proton collisions at s = 13 TeV with the ATLAS detector journal, April 2019

Diboson at the LHC vs LEP text, January 2018

Diboson at the LHC vs LEP journal, March 2019

Resolving gluon fusion loops at current and future hadron colliders text, January 2016

On the Validity of the Effective Field Theory Approach to SM Precision Tests text, January 2016

Resolving gluon fusion loops at current and future hadron colliders text, January 2016

Effective Field Theory in the top sector: do multijets help? text, January 2018

New Physics from High Energy Tops text, January 2018

Top-quark electroweak interactions at high energy text, January 2019

Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections text, January 2019

Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
journal, September 2012

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
journal, September 2012

Constraining couplings of top quarks to the Z boson in t t ¯ $$ t\overline{t} $$ + Z production at the LHC
journal, July 2014

The TeV physics of strongly interacting W's and Z's
journal, January 1985

Strong double higgs production at the LHC
journal, May 2010

The strongly-interacting light Higgs
journal, June 2007

Composite Higgses
journal, May 2014

Top compositeness at the Tevatron and LHC
journal, April 2008

Manifestations of top compositeness at colliders
journal, May 2009

Unitarity Bound on the Scale of Fermion Mass Generation
journal, November 1987

Single top and Higgs associated production as a probe of the $Ht\overline{t}$ coupling sign at the LHC
journal, January 2013

Measurement of top quark–antiquark pair production in association with a W or Z boson in pp collisions at $$\sqrt{s} = 8$$ s = 8 $$\,\text {TeV}$$ TeV
journal, September 2014

Higgs windows to new physics through d = 6 operators: constraints and one-loop anomalous dimensions
journal, November 2013

Dynamical symmetry breaking and universality breakdown
journal, June 1990

Constraining the dipole moments of the top quark
journal, April 2012

Holographic Twin Higgs Model
journal, May 2015

The composite twin Higgs scenario
journal, August 2015

Higgs couplings and precision electroweak data
journal, January 2013

Renormalization group constraints on new top interactions from electroweak precision data
journal, September 2015

Probing anomalous t t ¯ Z $$ t\overline{t}Z $$ interactions with rare meson decays
journal, February 2015

Search for $H \to γ γ$ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector
journal, January 2015

Search for the Standard Model Higgs boson produced in association with top quarks and decaying into $$\varvec{b\bar{b}}$$ b b ¯ in $$\varvec{pp}$$ p p collisions at $$\sqrt{\mathbf{s}}= \varvec{8{{\,\mathrm TeV}}}$$ s = 8 T e V with the ATLAS detector
journal, July 2015

Search for the associated production of the Higgs boson with a top quark pair in multilepton final states with the ATLAS detector
journal, October 2015

Theoretical constraints on additional Higgs bosons in light of the 126 GeV Higgs
journal, May 2014

Top-quark charge asymmetry and polarization in $t \bar{t} W^{\pm}$ production at the LHC
journal, September 2014

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

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

PYTHIA 6.4 physics and manual
journal, May 2006

Parton distributions with LHC data
journal, February 2013

QCD radiation in the production of heavy colored particles at the LHC
journal, February 2009

Total Top-Quark Pair-Production Cross Section at Hadron Colliders Through $O (α_{S}^{4})$
journal, June 2013

Performance of electron reconstruction and selection with the CMS detector in proton-proton collisions at √ s = 8 TeV
journal, June 2015

Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons
journal, June 2015

HATHOR – HAdronic Top and Heavy quarks crOss section calculatoR
journal, April 2011

LHC top partner searches beyond the 2 TeV mass region
journal, September 2015

Direct constraints on the top-Higgs coupling from the 8 TeV LHC data
journal, July 2013

Di-Higgs phenomenology in $t \bar{t} h h$ : The forgotten channel
journal, April 2015

Composite Higgs boson pair production at the LHC
journal, June 2011

Unitarity Bound on the Scale of Fermion Mass Generation
journal, April 1988

Observation of a new Boson at a mass of 125 gev with the cms Experiment at the lhc
conference, March 2015

Performance of Electron Reconstruction and Selection with the CMS Detector in Proton-Proton Collisions at √s = 8 TeV
text, January 2015

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

Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
text, January 2018

Constraining the dipole moments of the top quark
text, January 2012

Top Compositeness at the Tevatron and LHC
text, January 2007

QCD radiation in the production of heavy colored particles at the LHC
text, January 2008

Parton distributions with LHC data
text, January 2012

Direct constraints on the top-Higgs coupling from the 8 TeV LHC data
text, January 2013

A Holographic Twin Higgs Model
text, January 2014

Electroweak and QCD corrections to top-pair hadroproduction in association with heavy bosons
preprint, January 2015

A custodial symmetry for Zbb
text, January 2006

New physics from high energy tops
journal, January 2019

Large NLO corrections in t t ¯ W ± $$ t\overline{t}{W}^{\pm } $$ and t t ¯ t t ¯ $$ t\overline{t}t\overline{t} $$ hadroproduction from supposedly subleading EW contributions
journal, February 2018

Probing top quark neutral couplings in the Standard Model Effective Field Theory at NLO in QCD
journal, May 2016

Combinations of single-top-quark production cross-section measurements and |fLVVtb| determinations at s $$ \sqrt{s} $$ = 7 and 8 TeV with the ATLAS and CMS experiments
journal, May 2019

On the validity of the effective field theory approach to SM precision tests
journal, July 2016

Precision probes of QCD at high energies
journal, July 2017

Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections
journal, August 2019

Resolving gluon fusion loops at current and future hadron colliders
journal, September 2016

Single-top associated production with a Z or H boson at the LHC: the SMEFT interpretation
journal, October 2018

Top-quark electroweak interactions at high energy
journal, October 2019

The other effective fermion compositeness
journal, November 2017

Helicity selection rules and noninterference for BSM amplitudes
journal, March 2017

Effective field theory in the top sector: Do multijets help?
journal, February 2019

Measurement of the $t \bar{t} Z$ and $t \bar{t} W$ cross sections in proton-proton collisions at $\sqrt{s} = 13 TeV$ with the ATLAS detector
journal, April 2019

Diboson at the LHC vs LEP
text, January 2018

Diboson at the LHC vs LEP
journal, March 2019

Resolving gluon fusion loops at current and future hadron colliders
text, January 2016

On the Validity of the Effective Field Theory Approach to SM Precision Tests
text, January 2016

Resolving gluon fusion loops at current and future hadron colliders
text, January 2016

Effective Field Theory in the top sector: do multijets help?
text, January 2018

New Physics from High Energy Tops
text, January 2018

Top-quark electroweak interactions at high energy
text, January 2019

Top-quark pair hadroproduction in association with a heavy boson at NLO+NNLL including EW corrections
text, January 2019