Modeling uncertainties of t t ¯ W ± multilepton signatures

Bevilacqua, G.; Bi, H. Y.; Febres Cordero, F.; Hartanto, H. B.; Kraus, M.; Nasufi, J.; Reina, L.; Worek, M.

doi:10.1103/PhysRevD.105.014018

Title: Modeling uncertainties of $t \bar{t} W^{\pm}$ multilepton signatures

Abstract

In light of recent discrepancies between the modeling of tt¯W^± signatures and measurements reported by the Large Hadron Collider (LHC) experimental collaborations, we investigate in detail theoretical uncertainties for multi-lepton signatures. Here, we compare results from the state-of-the-art full off-shell calculation and its Narrow Width Approximation to results obtained from the on-shell tt¯W^± calculation, with approximate spin-correlations in top-quark and W decays, matched to parton showers. In the former case double-, single-, and non-resonant contributions together with interference effects are taken into account, while the latter two cases are only based on the double resonant top-quark contributions. The comparison is performed for the LHC at √s=13 TeV for which we study separately the multi-lepton signatures as predicted from the dominant NLO contributions at the perturbative orders O($$α$$$^{3}_{s}$$α⁶) and O(α_sα⁸). Furthermore, we combine both contributions and propose a simple way to approximately incorporate the full off-shell effects in the NLO computation of on-shell pp → tt¯W^± matched to parton showers.

Authors:

;

; Hartanto, H. B.;

;

Publication Date:: Fri Jan 21 00:00:00 EST 2022

Research Org.:: Florida State Univ., Tallahassee, FL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1841641

Alternate Identifier(s):: OSTI ID: 1865595

Grant/Contract Number:: SC0010102

Resource Type:: Published Article

Journal Name:: Physical Review D

Additional Journal Information:: Journal Name: Physical Review D Journal Volume: 105 Journal Issue: 1; Journal ID: ISSN 2470-0010

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Hadron-hadron interactions; Perturbative QCD; Quark & gluon jets; Top quark; W & Z bosons; Monte Carlo methods

Citation Formats


                    Bevilacqua, G., Bi, H. Y., Febres Cordero, F., Hartanto, H. B., Kraus, M., Nasufi, J., Reina, L., and Worek, M. Modeling uncertainties of t t ¯ W ± multilepton signatures.  United States: N. p., 2022. 
Web.  doi:10.1103/PhysRevD.105.014018.

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                    Bevilacqua, G., Bi, H. Y., Febres Cordero, F., Hartanto, H. B., Kraus, M., Nasufi, J., Reina, L., & Worek, M. Modeling uncertainties of t t ¯ W ± multilepton signatures.  United States.  https://doi.org/10.1103/PhysRevD.105.014018

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                    Bevilacqua, G., Bi, H. Y., Febres Cordero, F., Hartanto, H. B., Kraus, M., Nasufi, J., Reina, L., and Worek, M. Fri .  
"Modeling uncertainties of t t ¯ W ± multilepton signatures".  United States.  https://doi.org/10.1103/PhysRevD.105.014018.

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@article{osti_1841641,

  title        = {Modeling uncertainties of t t ¯ W ± multilepton signatures},

  author       = {Bevilacqua, G. and Bi, H. Y. and Febres Cordero, F. and Hartanto, H. B. and Kraus, M. and Nasufi, J. and Reina, L. and Worek, M.},

  abstractNote = {In light of recent discrepancies between the modeling of tt¯W± signatures and measurements reported by the Large Hadron Collider (LHC) experimental collaborations, we investigate in detail theoretical uncertainties for multi-lepton signatures. Here, we compare results from the state-of-the-art full off-shell calculation and its Narrow Width Approximation to results obtained from the on-shell tt¯W± calculation, with approximate spin-correlations in top-quark and W decays, matched to parton showers. In the former case double-, single-, and non-resonant contributions together with interference effects are taken into account, while the latter two cases are only based on the double resonant top-quark contributions. The comparison is performed for the LHC at √s=13 TeV for which we study separately the multi-lepton signatures as predicted from the dominant NLO contributions at the perturbative orders O($α$$^{3}_{s}$α6) and O(αsα8). Furthermore, we combine both contributions and propose a simple way to approximately incorporate the full off-shell effects in the NLO computation of on-shell pp → tt¯W± matched to parton showers.},

  doi          = {10.1103/PhysRevD.105.014018},

  journal      = {Physical Review D},

  number       = 1,

  volume       = 105,

  place        = {United States},

  year         = {Fri Jan 21 00:00:00 EST 2022},

  month        = {Fri Jan 21 00:00:00 EST 2022}

}

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`CutTools` : a program implementing the `OPP` reduction method to compute one-loop amplitudes
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Nuclear Physics B, Vol. 314, Issue 1
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Title: Modeling uncertainties of t t ¯ W ± multilepton signatures

Abstract

Citation Formats

Erratum to “Electroweak corrections to charged-current e + e − → 4 fermion processes: Technical details and further results” [Nucl. Phys. B 724 (2005) 247–294] journal, January 2012

Helac-Nlo journal, March 2013

Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in p p collisions at s = 13 TeV with the ATLAS detector journal, March 2019

NLO QCD corrections to off-shell $${t{\bar{t}}W^\pm }$$ production at the LHC: correlations and asymmetries journal, July 2021

NLO and off-shell effects in top quark mass determinations journal, July 2018

The anti- k t jet clustering algorithm journal, April 2008

Matching NLO QCD computations and parton shower simulations journal, June 2002

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

Subleading EW corrections and spin-correlation effects in $$t\bar{t}W$$ multi-lepton signatures journal, September 2020

Associated top quark pair production with a heavy boson: differential cross sections at NLO + NNLL accuracy journal, May 2020

Combined NLO EW and QCD corrections to off-shell $$\text {t} \overline{\text {t}}\text {W} $$ production at the LHC journal, April 2021

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

On the treatment of resonances in next-to-leading order calculations matched to a parton shower journal, December 2015

Helac-Phegas: A generator for all parton level processes journal, October 2009

PYTHIA 6.4 physics and manual journal, May 2006

ROOT — A C++ framework for petabyte data storage, statistical analysis and visualization journal, December 2009

FeynGame journal, November 2020

Measurement of the t t ¯ W $$ t\overline{t}W $$ and t t ¯ Z $$ t\overline{t}Z $$ production cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector journal, November 2015

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

On improving NLO merging for $$ \mathrm{t}\overline{\mathrm{t}}\mathrm{W} $$ production journal, November 2021

Associated production of a top quark pair with a heavy electroweak gauge boson at NLO+NNLL accuracy journal, March 2019

A standard format for Les Houches Event Files journal, February 2007

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

Off-shell vs on-shell modelling of top quarks in photon associated production journal, March 2020

Predictions for all processes e+e− → fermions + γ journal, November 1999

Infrared-safe definition of jet flavour journal, May 2006

Parton distributions from high-precision collider data: NNPDF Collaboration journal, October 2017

Updates to the one-loop provider NLOX journal, January 2022

Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV journal, January 2016

Measurement of the $${\varvec{t\bar{t}Z}}$$ t t ¯ Z and $${\varvec{t\bar{t}W}}$$ t t ¯ W production cross sections in multilepton final states using 3.2 fb $$^{-1}$$ - 1 of $$\varvec{pp}$$ p p collisions at $$\sqrt{s}$$ s = 13 TeV with the ATLAS detector journal, January 2017

Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV journal, August 2018

Matching NLO QCD computations with parton shower simulations: the POWHEG method journal, November 2007

Second order QCD corrections to Γ ( t → W b ) journal, November 1999

Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations journal, April 2007

Search for physics beyond the standard model in events with two leptons of same sign, missing transverse momentum, and jets in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV journal, September 2017

Measurement of the t$$ \overline{t} $$t$$ \overline{t} $$ production cross section in pp collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector journal, November 2021

Complete Nagy-Soper subtraction for next-to-leading order calculations in QCD journal, October 2013

Automated one-loop calculations: a proof of concept journal, September 2009

Next-to-leading order QCD effects and the top quark mass measurements at the LHC journal, August 2010

NLO QCD corrections to W + W − b b ¯ $$ {W}^{+}{W}^{-} b\overline{b} $$ production with leptonic decays in the light of top quark mass and asymmetry measurements journal, June 2014

QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations journal, March 2011

t $ \bar{\mathrm{t}} $ W± + t $ \bar{\mathrm{t}} $ Z hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects journal, November 2012

Associated production of a top pair and a W boson at next-to-next-to-leading logarithmic accuracy journal, September 2016

Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at $$\sqrt{s}=13$$ $$\,\text {TeV}$$ journal, January 2020

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Electroweak corrections to charged-current fermion processes: Technical details and further results journal, September 2005

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

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Evidence for $$t\bar{t}t\bar{t}$$ production in the multilepton final state in proton–proton collisions at $$\sqrt{s}=13$$ $$\text {TeV}$$ with the ATLAS detector journal, November 2020

A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms journal, November 2004

Electroweak radiative corrections to e+e−→WW→4 fermions in double-pole approximation — the RacoonWW approach journal, October 2000

NLOX, a one-loop provider for Standard Model processes journal, December 2020

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Anatomy of inclusive t t ‾ W production at hadron colliders journal, December 2020

Top quark mass studies with t t ¯ j $$ t\overline{t}j $$ at the LHC journal, March 2018

Renormalization group improved predictions for t t ¯ W ± production at hadron colliders journal, November 2014

Matching NLO QCD and parton showers in heavy flavour production journal, August 2003

An introduction to PYTHIA 8.2 journal, June 2015

Observation of t t ¯ H Production journal, June 2018

NLO QCD corrections to off-shell $$ \mathrm{t}\overline{\mathrm{t}}{\mathrm{W}}^{\pm } $$ production at the LHC journal, November 2020

Strong tW scattering at the LHC journal, January 2016

NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders journal, October 2012

Off-shell top quarks with one jet at the LHC: a comprehensive analysis at NLO QCD journal, November 2016

Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1 of s = 13 $$ \sqrt{s}=13 $$ TeV pp collision data with the ATLAS detector journal, September 2017

An NLO+PS generator for $${\varvec{t \bar{t}}}$$ t t ¯ and $${\varvec{W t}}$$ W t production and decay including non-resonant and interference effects journal, December 2016

Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations journal, March 2013

Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector journal, September 2018

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

Associated production of a top-quark pair with vector bosons at NLO in QCD: impact on t t ¯ H $$ \mathrm{t}\overline{\mathrm{t}}\mathrm{H} $$ searches at the LHC journal, February 2016

Matching the Nagy-Soper parton shower at next-to-leading order journal, June 2015

CutTools : a program implementing the OPP reduction method to compute one-loop amplitudes journal, March 2008

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

Polarizing the dipoles journal, August 2009

$$ t\overline t {W^{\pm }} $$ production and decay at NLO journal, July 2012

Title: Modeling uncertainties of $t \bar{t} W^{\pm}$ multilepton signatures

Erratum to “Electroweak corrections to charged-current $e^{+} e^{-} \to 4$ fermion processes: Technical details and further results” [Nucl. Phys. B 724 (2005) 247–294]
journal, January 2012

Helac-Nlo
journal, March 2013

Search for four-top-quark production in the single-lepton and opposite-sign dilepton final states in p p collisions at s = 13 TeV with the ATLAS detector
journal, March 2019

NLO QCD corrections to off-shell $${t{\bar{t}}W^\pm }$$ production at the LHC: correlations and asymmetries
journal, July 2021

NLO and off-shell effects in top quark mass determinations
journal, July 2018

The anti- k _t jet clustering algorithm
journal, April 2008

Matching NLO QCD computations and parton shower simulations
journal, June 2002

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

Subleading EW corrections and spin-correlation effects in $$t\bar{t}W$$ multi-lepton signatures
journal, September 2020

Associated top quark pair production with a heavy boson: differential cross sections at NLO + NNLL accuracy
journal, May 2020

Combined NLO EW and QCD corrections to off-shell $$\text {t} \overline{\text {t}}\text {W} $$ production at the LHC
journal, April 2021

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

On the treatment of resonances in next-to-leading order calculations matched to a parton shower
journal, December 2015

Helac-Phegas: A generator for all parton level processes
journal, October 2009

PYTHIA 6.4 physics and manual
journal, May 2006

ROOT — A C++ framework for petabyte data storage, statistical analysis and visualization
journal, December 2009

FeynGame
journal, November 2020

Measurement of the t t ¯ W $$ t\overline{t}W $$ and t t ¯ Z $$ t\overline{t}Z $$ production cross sections in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector
journal, November 2015

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

On improving NLO merging for $$ \mathrm{t}\overline{\mathrm{t}}\mathrm{W} $$ production
journal, November 2021

Associated production of a top quark pair with a heavy electroweak gauge boson at NLO+NNLL accuracy
journal, March 2019

A standard format for Les Houches Event Files
journal, February 2007

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

Off-shell vs on-shell modelling of top quarks in photon associated production
journal, March 2020

Predictions for all processes e+e− → fermions + γ
journal, November 1999

Infrared-safe definition of jet flavour
journal, May 2006

Parton distributions from high-precision collider data: NNPDF Collaboration
journal, October 2017

Updates to the one-loop provider NLOX
journal, January 2022

Observation of top quark pairs produced in association with a vector boson in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV
journal, January 2016

Measurement of the $${\varvec{t\bar{t}Z}}$$ t t ¯ Z and $${\varvec{t\bar{t}W}}$$ t t ¯ W production cross sections in multilepton final states using 3.2 fb $$^{-1}$$ - 1 of $$\varvec{pp}$$ p p collisions at $$\sqrt{s}$$ s = 13 TeV with the ATLAS detector
journal, January 2017

Measurement of the cross section for top quark pair production in association with a W or Z boson in proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV
journal, August 2018

Matching NLO QCD computations with parton shower simulations: the POWHEG method
journal, November 2007

Second order QCD corrections to $Γ (\vec{t} W b)$
journal, November 1999

Angular correlations of lepton pairs from vector boson and top quark decays in Monte Carlo simulations
journal, April 2007

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journal, September 2017

Measurement of the t$$ \overline{t} $$t$$ \overline{t} $$ production cross section in pp collisions at $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector
journal, November 2021

Complete Nagy-Soper subtraction for next-to-leading order calculations in QCD
journal, October 2013

Automated one-loop calculations: a proof of concept
journal, September 2009

Next-to-leading order QCD effects and the top quark mass measurements at the LHC
journal, August 2010

NLO QCD corrections to W + W − b b ¯ $$ {W}^{+}{W}^{-} b\overline{b} $$ production with leptonic decays in the light of top quark mass and asymmetry measurements
journal, June 2014

QCD corrections to the hadronic production of a heavy quark pair and a W-boson including decay correlations
journal, March 2011

t $ \bar{\mathrm{t}} $ W± + t $ \bar{\mathrm{t}} $ Z hadroproduction at NLO accuracy in QCD with Parton Shower and Hadronization effects
journal, November 2012

Associated production of a top pair and a W boson at next-to-next-to-leading logarithmic accuracy
journal, September 2016

Search for production of four top quarks in final states with same-sign or multiple leptons in proton–proton collisions at $$\sqrt{s}=13$$ $$\,\text {TeV}$$
journal, January 2020

Ntuples for NLO events at hadron colliders
journal, May 2014

Electroweak corrections to charged-current fermion processes: Technical details and further results
journal, September 2005

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

Rivet user manual
journal, December 2013

Evidence for $$t\bar{t}t\bar{t}$$ production in the multilepton final state in proton–proton collisions at $$\sqrt{s}=13$$ $$\text {TeV}$$ with the ATLAS detector
journal, November 2020

A New Method for Combining NLO QCD with Shower Monte Carlo Algorithms
journal, November 2004

Electroweak radiative corrections to e+e−→WW→4 fermions in double-pole approximation — the RacoonWW approach
journal, October 2000

NLOX, a one-loop provider for Standard Model processes
journal, December 2020

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

Top-quark pair production in association with a $W^{\pm}$ gauge boson in the POWHEG-BOX
journal, May 2021

Search for supersymmetry at $$\sqrt{s}=13$$ s = 13 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector
journal, May 2016

Search for new physics in same-sign dilepton events in proton–proton collisions at $$\sqrt{s} = 13\,\text {TeV} $$ s = 13 TeV
journal, August 2016

Anatomy of inclusive $t \overline{t} W$ production at hadron colliders
journal, December 2020

Top quark mass studies with t t ¯ j $$ t\overline{t}j $$ at the LHC
journal, March 2018

Renormalization group improved predictions for $t \bar{t} W^{\pm}$ production at hadron colliders
journal, November 2014

Matching NLO QCD and parton showers in heavy flavour production
journal, August 2003

An introduction to PYTHIA 8.2
journal, June 2015

Observation of $t \bar{t} H$ Production
journal, June 2018

NLO QCD corrections to off-shell $$ \mathrm{t}\overline{\mathrm{t}}{\mathrm{W}}^{\pm } $$ production at the LHC
journal, November 2020

Strong tW scattering at the LHC
journal, January 2016

NLO QCD corrections to off-shell top-antitop production with leptonic decays at hadron colliders
journal, October 2012

Off-shell top quarks with one jet at the LHC: a comprehensive analysis at NLO QCD
journal, November 2016

Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb−1 of s = 13 $$ \sqrt{s}=13 $$ TeV pp collision data with the ATLAS detector
journal, September 2017

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journal, December 2016

Automatic spin-entangled decays of heavy resonances in Monte Carlo simulations
journal, March 2013

Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector
journal, September 2018

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

Associated production of a top-quark pair with vector bosons at NLO in QCD: impact on t t ¯ H $$ \mathrm{t}\overline{\mathrm{t}}\mathrm{H} $$ searches at the LHC
journal, February 2016

Matching the Nagy-Soper parton shower at next-to-leading order
journal, June 2015

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journal, March 2008

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
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journal, August 2009

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journal, July 2012

The simplest of them all: $$ t\overline{t}{W}^{\pm } $$ at NLO accuracy in QCD
journal, August 2020

QCD corrections to semileptonic decays of heavy quarks
journal, February 1989