Off-shell single-top-quark production in the Standard Model Effective Field Theory

Neumann, Tobias; Sullivan, Zack Edward

doi:10.1007/JHEP06(2019)022

Title: Off-shell single-top-quark production in the Standard Model Effective Field Theory

Abstract

We present a fully differential and spin-dependent t-channel single-top-quark calculation at next-to-leading order (NLO) in QCD including off-shell effects by using the complex mass scheme in the Standard Model (SM) and in the Standard Model Effective Field Theory (SMEFT). We include all relevant SMEFT operators at 1/Λ$$^{2}$$ that contribute at NLO in QCD for a fully consistent comparison to the SM at NLO. In addition, we include chirality flipping operators that do not interfere with the SM amplitude and contribute only at 1/Λ$$^{4}$$ with a massless b-quark. Such higher order effects are usually captured by considering anomalous right-handed Wtb and left-handed Wtb tensor couplings. Despite their formal suppression in the SMEFT, they describe an important class of models for new physics. Our calculation and analysis framework is publicly available in MCFM.

Authors:

^[1]; Sullivan, Zack Edward ^[2]

Illinois Institute of Technology, Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Illinois Institute of Technology, Chicago, IL (United States)

Publication Date:: Fri Jun 07 00:00:00 EDT 2019

Research Org.:: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1527398

Report Number(s):: arXiv:1903.11023; FERMILAB-PUB-19-119-T; IIT-CAPP-19-01
Journal ID: ISSN 1029-8479; 1726755

Grant/Contract Number:: AC02-07CH11359; SC0008347

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: 2019; Journal Issue: 6; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QCD Phenomenology; NLO Computations

Citation Formats


                    Neumann, Tobias, and Sullivan, Zack Edward. Off-shell single-top-quark production in the Standard Model Effective Field Theory.  United States: N. p., 2019. 
Web.  doi:10.1007/JHEP06(2019)022.

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                    Neumann, Tobias, & Sullivan, Zack Edward. Off-shell single-top-quark production in the Standard Model Effective Field Theory.  United States.  https://doi.org/10.1007/JHEP06(2019)022

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                    Neumann, Tobias, and Sullivan, Zack Edward. Fri .  
"Off-shell single-top-quark production in the Standard Model Effective Field Theory".  United States.  https://doi.org/10.1007/JHEP06(2019)022.  https://www.osti.gov/servlets/purl/1527398.

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@article{osti_1527398,

  title        = {Off-shell single-top-quark production in the Standard Model Effective Field Theory},

  author       = {Neumann, Tobias and Sullivan, Zack Edward},

  abstractNote = {We present a fully differential and spin-dependent t-channel single-top-quark calculation at next-to-leading order (NLO) in QCD including off-shell effects by using the complex mass scheme in the Standard Model (SM) and in the Standard Model Effective Field Theory (SMEFT). We include all relevant SMEFT operators at 1/Λ$^{2}$ that contribute at NLO in QCD for a fully consistent comparison to the SM at NLO. In addition, we include chirality flipping operators that do not interfere with the SM amplitude and contribute only at 1/Λ$^{4}$ with a massless b-quark. Such higher order effects are usually captured by considering anomalous right-handed Wtb and left-handed Wtb tensor couplings. Despite their formal suppression in the SMEFT, they describe an important class of models for new physics. Our calculation and analysis framework is publicly available in MCFM.},

  doi          = {10.1007/JHEP06(2019)022},

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

  number       = 6,

  volume       = 2019,

  place        = {United States},

  year         = {Fri Jun 07 00:00:00 EDT 2019},

  month        = {Fri Jun 07 00:00:00 EDT 2019}

}

Copy to clipboard

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Works referencing / citing this record:

Precise predictions for single-top production: the impact of EW corrections and QCD shower on the t-channel signature
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Frederix, Rikkert; Pagani, Davide; Tsinikos, Ioannis
Journal of High Energy Physics, Vol. 2019, Issue 9
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Precision phenomenology with MCFM
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Campbell, John; Neumann, Tobias
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O new physics, where art thou? A global search in the top sector
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Brivio, I.; Bruggisser, S.; Maltoni, F.
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The large mass of the top quark, close to the electroweak symmetry-breaking scale, makes it a good candidate for probing physics beyond the Standard Model, including possible anomalous couplings. D0 has made measurements of single top quark production using 5.4 fb{sup -1} of integrated luminosity. We examine the data to study the Lorentz structure of the Wtb coupling. We find that the data prefer the left-handed vector coupling and set upper limits on the anomalous couplings. In 2009, the electroweak single top quark production was observed by the D0 and CDF collaborations. Electroweak production of top quarks at the Tevatronmore »« less
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Study of weak corrections to Drell-Yan, top-quark pair, and dijet production at high energies with MCFM

Journal Article Campbell, John M. ; Wackeroth, Doreen ; Zhou, Jia - Physical Review D

Electroweak (EW) corrections can be enhanced at high energies due to the soft or collinear radiation of virtual and real W and Z bosons that result in Sudakov-like corrections of the form αmore »« less
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https://doi.org/10.1103/PhysRevD.94.093009

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Top Quark Pair in Association with an Extra Jet: Phenomenological Analysis at the Tevatron

Thesis/Dissertation Hussein, Mohammad Ahmad

The first measurement of the cross section of the top quark pair in association with an extra hard jet (more »« less
https://doi.org/10.2172/1334774

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Title: Off-shell single-top-quark production in the Standard Model Effective Field Theory

Abstract

Citation Formats

Effective field theory: A modern approach to anomalous couplings journal, August 2013

Automatic Feynman Graph Generation journal, April 1993

Calculating QCD corrections to single top production in hadronic interactions journal, February 1995

Single top quark production at LHC with anomalous Wtb couplings journal, November 2008

Single-top t-channel production with off-shell and non-resonant effects journal, October 2013

Unstable particles in one loop calculations journal, October 1994

Search for new physics via single-top production at the LHC journal, December 2007

The SMEFTsim package, theory and tools journal, December 2017

The complex-mass scheme and unitarity in perturbative quantum field theory journal, August 2015

A general analysis of Wtb anomalous couplings journal, June 2017

Right-handed charged currents in the era of the Large Hadron Collider journal, May 2017

Single-top t-channel production with off-shell and non-resonant effects text, January 2013

Next-to-Leading-Order Predictions for t -Channel Single-Top Production at Hadron Colliders journal, May 2009

Renormalization group evolution of the Standard Model dimension six operators III: gauge coupling dependence and phenomenology journal, April 2014

Effective theory calculation of resonant high-energy scattering journal, May 2004

New developments in FeynCalc 9.0 journal, October 2016

HatHor for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions journal, June 2015

Differential distributions for t-channel single top-quark production and decay at next-to-next-to-leading order in QCD journal, November 2017

Feyn Calc - Computer-algebraic calculation of Feynman amplitudes journal, June 1991

A Resource for Signs and Feynman Diagrams of the Standard Model journal, October 2012

Kira—A Feynman integral reduction program journal, September 2018

W polarisation beyond helicity fractions in top quark decays journal, November 2010

Renormalization group evolution of the standard model dimension six operators. I: formalism and λ dependence journal, October 2013

On the NNLO QCD corrections to single-top production at the LHC journal, September 2014

Method for simulating electroweak top-quark production events in the NLO approximation: SingleTop event generator journal, August 2006

The fully differential top decay distribution journal, March 2017

Top-quark processes at NLO in production and decay journal, December 2014

Effective lagrangian analysis of new interactions and flavour conservation journal, May 1986

S@M, a mathematica implementation of the spinor-helicity formalism journal, October 2008

QCDLoop: A comprehensive framework for one-loop scalar integrals journal, December 2016

Are PDFs still consistent with Tevatron data? journal, January 2018

MCFM for the Tevatron and the LHC journal, August 2010

Single top polarisation as a window to new physics journal, June 2017

Single top-quark production at the Tevatron and the LHC journal, July 2018

NLO predictions for t-channel production of single top and fourth generation quarks at hadron colliders journal, October 2009

S@M, a mathematica implementation of the spinor-helicity formalism text, January 2008

Multiboson interactions at the LHC journal, September 2017

A minimal set of top anomalous couplings journal, May 2009

Dimension-six terms in the Standard Model Lagrangian journal, October 2010

Scalar one-loop integrals for QCD journal, February 2008

Renormalization group evolution of the Standard Model dimension six operators II: Yukawa dependence journal, January 2014

Effective operators in t-channel single top production and decay journal, November 2018

Ti k Z-Feynman: Feynman diagrams with Ti k Z journal, January 2017

Feynman rules for the Standard Model Effective Field Theory in R ξ -gauges journal, June 2017

NNLL threshold resummation for top-pair and single-top production journal, July 2014

Single Top Production at Next-to-Leading Order in the Standard Model Effective Field Theory journal, April 2016

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

Single-top-quark production via W -gluon fusion at next-to-leading order journal, November 1997

Improved spin basis for angular correlation studies in single top quark production at the Fermilab Tevatron journal, June 1997

Single top quark production at the LHC: Understanding spin journal, March 2000

Single top quark production as a window to physics beyond the standard model journal, December 2000

Fully differential single-top-quark cross section in next-to-leading order QCD journal, September 2002

Understanding single-top-quark production and jets at hadron colliders journal, December 2004

Angular correlations in single-top-quark and W j j production at next-to-leading order journal, November 2005

Single top quark production and decay at next-to-leading order in hadron collisions journal, March 2005

Single top-quark production and decay at next-to-leading order journal, November 2004

Final state QCD corrections to off-shell single top production in hadron collsions journal, October 1996

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

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

The complex-mass scheme for perturbative calculations with unstable particles journal, October 2006

Single-top production in MC@NLO journal, March 2006

NLO single-top production matched with shower in POWHEG: s - and t -channel contributions journal, September 2009

Higher-order soft gluon corrections in single top quark production at the CERN LHC journal, April 2007

Complete calculations of $Wb\bar{b}$ and $Wb\bar{b}+$ jet production at Tevatron and LHC: Probing anomalous Wtb couplings in single-top production journal, December 1999

Search for new physics via single top production at TeV energy e γ colliders journal, November 2006

Fully differential W ′ production and decay at next-to-leading order in QCD journal, October 2002

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

LanHEP—a package for the automatic generation of Feynman rules in field theory. Version 3.0 journal, March 2009

LanHEP — A package for automatic generation of Feynman rules from the Lagrangian. Version 3.2 journal, April 2016

HypExp, a Mathematica package for expanding hypergeometric functions around integer-valued parameters journal, July 2006

A general algorithm for calculating jet cross sections in NLO QCD journal, February 1997

Next-to-leading order calculation of four-jet observables in electron-positron annihilation journal, December 1998

Next-to-leading order calculation of three-jet observables in hadron-hadron collisions journal, November 2003

LanHEP — A package for automatic generation of Feynman rules from the Lagrangian. Version 3.2 dataset, January 2019

Kira - A Feynman Integral Reduction Program text, January 2017

QCDLoop: a comprehensive framework for one-loop scalar integrals dataset, January 2016

Scalar one-loop integrals for QCD text, January 2007

Effective field theory: A modern approach to anomalous couplings
journal, August 2013

Automatic Feynman Graph Generation
journal, April 1993

Calculating QCD corrections to single top production in hadronic interactions
journal, February 1995

Single top quark production at LHC with anomalous Wtb couplings
journal, November 2008

Single-top t-channel production with off-shell and non-resonant effects
journal, October 2013

Unstable particles in one loop calculations
journal, October 1994

Search for new physics via single-top production at the LHC
journal, December 2007

The SMEFTsim package, theory and tools
journal, December 2017

The complex-mass scheme and unitarity in perturbative quantum field theory
journal, August 2015

A general analysis of Wtb anomalous couplings
journal, June 2017

Right-handed charged currents in the era of the Large Hadron Collider
journal, May 2017

Single-top t-channel production with off-shell and non-resonant effects
text, January 2013

Next-to-Leading-Order Predictions for $t$ -Channel Single-Top Production at Hadron Colliders
journal, May 2009

Renormalization group evolution of the Standard Model dimension six operators III: gauge coupling dependence and phenomenology
journal, April 2014

Effective theory calculation of resonant high-energy scattering
journal, May 2004

New developments in FeynCalc 9.0
journal, October 2016

HatHor for single top-quark production: Updated predictions and uncertainty estimates for single top-quark production in hadronic collisions
journal, June 2015

Differential distributions for t-channel single top-quark production and decay at next-to-next-to-leading order in QCD
journal, November 2017

Feyn Calc - Computer-algebraic calculation of Feynman amplitudes
journal, June 1991

A Resource for Signs and Feynman Diagrams of the Standard Model
journal, October 2012

Kira—A Feynman integral reduction program
journal, September 2018

W polarisation beyond helicity fractions in top quark decays
journal, November 2010

Renormalization group evolution of the standard model dimension six operators. I: formalism and λ dependence
journal, October 2013

On the NNLO QCD corrections to single-top production at the LHC
journal, September 2014

Method for simulating electroweak top-quark production events in the NLO approximation: SingleTop event generator
journal, August 2006

The fully differential top decay distribution
journal, March 2017

Top-quark processes at NLO in production and decay
journal, December 2014

Effective lagrangian analysis of new interactions and flavour conservation
journal, May 1986

S@M, a mathematica implementation of the spinor-helicity formalism
journal, October 2008

QCDLoop: A comprehensive framework for one-loop scalar integrals
journal, December 2016

Are PDFs still consistent with Tevatron data?
journal, January 2018

MCFM for the Tevatron and the LHC
journal, August 2010

Single top polarisation as a window to new physics
journal, June 2017

Single top-quark production at the Tevatron and the LHC
journal, July 2018

NLO predictions for t-channel production of single top and fourth generation quarks at hadron colliders
journal, October 2009

S@M, a mathematica implementation of the spinor-helicity formalism
text, January 2008

Multiboson interactions at the LHC
journal, September 2017

A minimal set of top anomalous couplings
journal, May 2009

Dimension-six terms in the Standard Model Lagrangian
journal, October 2010

Scalar one-loop integrals for QCD
journal, February 2008

Renormalization group evolution of the Standard Model dimension six operators II: Yukawa dependence
journal, January 2014

Effective operators in t-channel single top production and decay
journal, November 2018

Ti k Z-Feynman: Feynman diagrams with Ti k Z
journal, January 2017

Feynman rules for the Standard Model Effective Field Theory in R ξ -gauges
journal, June 2017

NNLL threshold resummation for top-pair and single-top production
journal, July 2014

Single Top Production at Next-to-Leading Order in the Standard Model Effective Field Theory
journal, April 2016

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

Single-top-quark production via $W$ -gluon fusion at next-to-leading order
journal, November 1997

Improved spin basis for angular correlation studies in single top quark production at the Fermilab Tevatron
journal, June 1997

Single top quark production at the LHC: Understanding spin
journal, March 2000

Single top quark production as a window to physics beyond the standard model
journal, December 2000

Fully differential single-top-quark cross section in next-to-leading order QCD
journal, September 2002

Understanding single-top-quark production and jets at hadron colliders
journal, December 2004

Angular correlations in single-top-quark and $W_{j j}$ production at next-to-leading order
journal, November 2005

Single top quark production and decay at next-to-leading order in hadron collisions
journal, March 2005

Single top-quark production and decay at next-to-leading order
journal, November 2004

Final state QCD corrections to off-shell single top production in hadron collsions
journal, October 1996

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

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

The complex-mass scheme for perturbative calculations with unstable particles
journal, October 2006

Single-top production in MC@NLO
journal, March 2006

NLO single-top production matched with shower in POWHEG: s - and t -channel contributions
journal, September 2009

Higher-order soft gluon corrections in single top quark production at the CERN LHC
journal, April 2007

Complete calculations of $Wb\bar{b}$ and $Wb\bar{b}+$ jet production at Tevatron and LHC: Probing anomalous Wtb couplings in single-top production
journal, December 1999

Search for new physics via single top production at TeV energy $e γ$ colliders
journal, November 2006

Fully differential $W^{'}$ production and decay at next-to-leading order in QCD
journal, October 2002

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

LanHEP—a package for the automatic generation of Feynman rules in field theory. Version 3.0
journal, March 2009

LanHEP — A package for automatic generation of Feynman rules from the Lagrangian. Version 3.2
journal, April 2016

HypExp, a Mathematica package for expanding hypergeometric functions around integer-valued parameters
journal, July 2006

A general algorithm for calculating jet cross sections in NLO QCD
journal, February 1997

Next-to-leading order calculation of four-jet observables in electron-positron annihilation
journal, December 1998

Next-to-leading order calculation of three-jet observables in hadron-hadron collisions
journal, November 2003

LanHEP — A package for automatic generation of Feynman rules from the Lagrangian. Version 3.2
dataset, January 2019

Kira - A Feynman Integral Reduction Program
text, January 2017

QCDLoop: a comprehensive framework for one-loop scalar integrals
dataset, January 2016

Scalar one-loop integrals for QCD
text, January 2007

A minimal set of top anomalous couplings
text, January 2008

Next-to-leading-order predictions for t-channel single-top production at hadron colliders
text, January 2009

MCFM for the Tevatron and the LHC
text, January 2010