Precise predictions for same-sign W-boson scattering at the LHC

Ballestrero, Alessandro; Biedermann, Benedikt; Brass, Simon; Denner, Ansgar; Dittmaier, Stefan; Frederix, Rikkert; Govoni, Pietro; Grossi, Michele; Jäger, Barbara; Karlberg, Alexander; Maina, Ezio; Pellen, Mathieu; Pelliccioli, Giovanni; Plätzer, Simon; Rauch, Michael; Rebuzzi, Daniela; Reuter, Jürgen; Rothe, Vincent; Schwan, Christopher; Shao, Hua -Sheng; Stienemeier, Pascal; Zanderighi, Giulia; Zaro, Marco; Zeppenfeld, Dieter

doi:10.1140/epjc/s10052-018-6136-y

Title: Precise predictions for same-sign W-boson scattering at the LHC

Abstract

Vector-boson scattering processes are of great importance for the current run-II and future runs of the Large Hadron Collider. The presence of triple and quartic gauge couplings in the process gives access to the gauge sector of the Standard Model (SM) and possible new-physics contributions there. To test any new-physics hypothesis, sound knowledge of the SM contributions is necessary, with a precision which at least matches the experimental uncertainties of existing and forthcoming measurements. In this article we present a detailed study of the vector-boson scattering process with two positively-charged leptons and missing transverse momentum in the final state. In particular, we first carry out a systematic comparison of the various approximations that are usually performed for this kind of process against the complete calculation, at LO and NLO QCD accuracy. Such a study is performed both in the usual fiducial region used by experimental collaborations and in a more inclusive phase space, where the differences among the various approximations lead to more sizeable effects. Afterwards, we turn to predictions matched to parton showers, at LO and NLO: we show that on the one hand, the inclusion of NLO QCD corrections leads to more stable predictions, but on the othermore »« less

Authors:

Ballestrero, Alessandro ^[1]; Biedermann, Benedikt ^[2]; Brass, Simon ^[3];

^[2]; Dittmaier, Stefan ^[4]; Frederix, Rikkert ^[5]; Govoni, Pietro ^[6]; Grossi, Michele ^[7]; Jäger, Barbara ^[8]; Karlberg, Alexander ^[9]; Maina, Ezio ^[10]; Pellen, Mathieu ^[2]; Pelliccioli, Giovanni ^[10]; Plätzer, Simon ^[11]; Rauch, Michael ^[12]; Rebuzzi, Daniela ^[13]; Reuter, Jürgen ^[14]; Rothe, Vincent ^[14]; Schwan, Christopher ^[4]; Shao, Hua -Sheng ^[15] more »

INFN, Turin (Italy)
Univ. Würzburg, Wurzburg (Germany)
Univ. Siegen, Siegen (Germany)
Albert-Ludwigs-Univ. Freiburg, Freiburg (Germany)
Technische Univ. München, Garching (Germany)
Univ. and INFN, Milan (Italy)
Univ. di Pavia, Pavia (Italy); IBM Italia s.p.a. Circonvallazione Idroscalo, Segrate (Italy)
Univ. of Tübingen, Tubingen (Germany)
Univ. Zurich, Zurich (Switzerland)
INFN, Turin (Italy); Univ. di Torino, Turin (Italy)
Univ. of Vienna, Vienna (Austria)
Karlsruhe Institute of Technology (KIT), Karlsruhe (Germany)
Univ. di Pavia, Pavia (Italy)
DESY Theory Group, Hamburg (Germany)
Sorbonne Univ. et CNRS, Paris (France)
European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Nikhef, Amsterdam (Netherlands)

Publication Date:: Wed Aug 22 00:00:00 EDT 2018

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1544010

Resource Type:: Accepted Manuscript

Journal Name:: European Physical Journal. C, Particles and Fields

Additional Journal Information:: Journal Volume: 78; Journal Issue: 8; Journal ID: ISSN 1434-6044

Publisher:: Springer

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Physics

Citation Formats


                    Ballestrero, Alessandro, Biedermann, Benedikt, Brass, Simon, Denner, Ansgar, Dittmaier, Stefan, Frederix, Rikkert, Govoni, Pietro, Grossi, Michele, Jäger, Barbara, Karlberg, Alexander, Maina, Ezio, Pellen, Mathieu, Pelliccioli, Giovanni, Plätzer, Simon, Rauch, Michael, Rebuzzi, Daniela, Reuter, Jürgen, Rothe, Vincent, Schwan, Christopher, Shao, Hua -Sheng, Stienemeier, Pascal, Zanderighi, Giulia, Zaro, Marco, and Zeppenfeld, Dieter. Precise predictions for same-sign W-boson scattering at the LHC.  United States: N. p., 2018. 
Web.  doi:10.1140/epjc/s10052-018-6136-y.

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                    Ballestrero, Alessandro, Biedermann, Benedikt, Brass, Simon, Denner, Ansgar, Dittmaier, Stefan, Frederix, Rikkert, Govoni, Pietro, Grossi, Michele, Jäger, Barbara, Karlberg, Alexander, Maina, Ezio, Pellen, Mathieu, Pelliccioli, Giovanni, Plätzer, Simon, Rauch, Michael, Rebuzzi, Daniela, Reuter, Jürgen, Rothe, Vincent, Schwan, Christopher, Shao, Hua -Sheng, Stienemeier, Pascal, Zanderighi, Giulia, Zaro, Marco, & Zeppenfeld, Dieter. Precise predictions for same-sign W-boson scattering at the LHC.  United States.  https://doi.org/10.1140/epjc/s10052-018-6136-y

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                    Ballestrero, Alessandro, Biedermann, Benedikt, Brass, Simon, Denner, Ansgar, Dittmaier, Stefan, Frederix, Rikkert, Govoni, Pietro, Grossi, Michele, Jäger, Barbara, Karlberg, Alexander, Maina, Ezio, Pellen, Mathieu, Pelliccioli, Giovanni, Plätzer, Simon, Rauch, Michael, Rebuzzi, Daniela, Reuter, Jürgen, Rothe, Vincent, Schwan, Christopher, Shao, Hua -Sheng, Stienemeier, Pascal, Zanderighi, Giulia, Zaro, Marco, and Zeppenfeld, Dieter. Wed .  
"Precise predictions for same-sign W-boson scattering at the LHC".  United States.  https://doi.org/10.1140/epjc/s10052-018-6136-y.  https://www.osti.gov/servlets/purl/1544010.

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@article{osti_1544010,

  title        = {Precise predictions for same-sign W-boson scattering at the LHC},

  author       = {Ballestrero, Alessandro and Biedermann, Benedikt and Brass, Simon and Denner, Ansgar and Dittmaier, Stefan and Frederix, Rikkert and Govoni, Pietro and Grossi, Michele and Jäger, Barbara and Karlberg, Alexander and Maina, Ezio and Pellen, Mathieu and Pelliccioli, Giovanni and Plätzer, Simon and Rauch, Michael and Rebuzzi, Daniela and Reuter, Jürgen and Rothe, Vincent and Schwan, Christopher and Shao, Hua -Sheng and Stienemeier, Pascal and Zanderighi, Giulia and Zaro, Marco and Zeppenfeld, Dieter},

  abstractNote = {Vector-boson scattering processes are of great importance for the current run-II and future runs of the Large Hadron Collider. The presence of triple and quartic gauge couplings in the process gives access to the gauge sector of the Standard Model (SM) and possible new-physics contributions there. To test any new-physics hypothesis, sound knowledge of the SM contributions is necessary, with a precision which at least matches the experimental uncertainties of existing and forthcoming measurements. In this article we present a detailed study of the vector-boson scattering process with two positively-charged leptons and missing transverse momentum in the final state. In particular, we first carry out a systematic comparison of the various approximations that are usually performed for this kind of process against the complete calculation, at LO and NLO QCD accuracy. Such a study is performed both in the usual fiducial region used by experimental collaborations and in a more inclusive phase space, where the differences among the various approximations lead to more sizeable effects. Afterwards, we turn to predictions matched to parton showers, at LO and NLO: we show that on the one hand, the inclusion of NLO QCD corrections leads to more stable predictions, but on the other hand the details of the matching and of the parton-shower programs cause differences which are considerably larger than those observed at fixed order, even in the experimental fiducial region. We conclude with recommendations for experimental studies of vector-boson scattering processes.},

  doi          = {10.1140/epjc/s10052-018-6136-y},

  journal      = {European Physical Journal. C, Particles and Fields},

  number       = 8,

  volume       = 78,

  place        = {United States},

  year         = {Wed Aug 22 00:00:00 EDT 2018},

  month        = {Wed Aug 22 00:00:00 EDT 2018}

}

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Works referencing / citing this record:

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Title: Precise predictions for same-sign W-boson scattering at the LHC

Abstract

Citation Formats

Next-to-leading order QCD corrections to W + W − production via vector-boson fusion journal, July 2006

W + W + plus dijet production in the POWHEG BOX journal, June 2011

Logarithmic electroweak corrections to e + e − → ν e bar nu e W + W − journal, March 2007

The effective W approximation journal, January 1985

WW physics at future colliders journal, August 1986

Production of very massive Higgs bosons journal, March 1984

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders journal, March 2009

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

Complete lowest-order calculations for four-lepton final states in electron-positron collisions journal, January 1985

A new algorithm for adaptive multidimensional integration journal, May 1978

WHIZARD—simulating multi-particle processes at LHC and ILC journal, September 2011

Three-jet cross sections to next-to-leading order journal, May 1996

Scattering Amplitudes with Open Loops journal, March 2012

R E C O L A—REcursive Computation of One-Loop Amplitudes journal, May 2017

Automation of NLO processes and decays and POWHEG matching in WHIZARD journal, October 2016

Resonances and unitarity in weak boson scattering at the LHC journal, November 2008

Vector-boson scattering at the LHC conference, July 2018

Lusifer: a LUcid approach to SIx-FERmion production journal, October 2002

Collier: A fortran-based complex one-loop library in extended regularizations journal, March 2017

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

Non-factorizable photonic corrections to resonant production and decay of many unstable particles journal, March 2016

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

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

A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX journal, June 2010

Vbfnlo: A parton level Monte Carlo for processes with electroweak bosons journal, September 2009

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

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

Automation of next-to-leading order computations in QCD: the FKS subtraction journal, October 2009

Reducing full one-loop amplitudes to scalar integrals at the integrand level journal, February 2007

One-loop corrections for e+e− annihilation into μ+μ− in the Weinberg model journal, November 1979

A simple formula for reducing Feynman diagrams to scalar integrals journal, July 1991

Reduction schemes for one-loop tensor integrals journal, January 2006

Automation of one-loop QCD computations journal, May 2011

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

Ninja: Automated integrand reduction via Laurent expansion for one-loop amplitudes journal, October 2014

Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties journal, February 2012

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

Large Electroweak Corrections to Vector-Boson Scattering at the Large Hadron Collider journal, June 2017

All electroweak four-fermion processes in electron-positron collisions journal, August 1994

Parton distributions for the LHC run II journal, April 2015

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

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

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

An introduction to PYTHIA 8.2 journal, June 2015

Dipole showers and automated NLO matching in Herwig++ journal, November 2012

A proposal for a standard interface between Monte Carlo tools and one-loop programs journal, September 2010

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs journal, February 2014

Tuning PYTHIA 8.1: the Monash 2013 tune journal, August 2014

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

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

Electroweak production of two jets in association with a Z boson in proton–proton collisions at $$\sqrt{s}= $$ s = 13 $$\,\text {TeV}$$ TeV journal, July 2018

Herwig++ physics and manual journal, November 2008

Electroweak ZZjj production in the Standard Model and beyond in the POWHEG-BOX V2 journal, March 2014

Fully Differential Vector-Boson-Fusion Higgs Production at Next-to-Next-to-Leading Order journal, August 2015

Second-order QCD effects in Higgs boson production through vector boson fusion journal, June 2018

Top-pair production at the LHC through NNLO QCD and NLO EW journal, October 2017

Precise predictions for $$V+$$ V + jets dark matter backgrounds journal, December 2017

Automation of NLO processes and decays and POWHEG matching in WHIZARD text, January 2016

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

Second-order QCD effects in Higgs boson production through vector boson fusion text, January 2018

Automation of one-loop QCD computations text, January 2011

Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties text, January 2012

Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets text, January 2015

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs text, January 2014

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders dataset, January 2019

Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations dataset, January 2016

Study of Vector Boson Scattering and Search for New Physics in Events with Two Same-Sign Leptons and Two Jets text, January 2015

Top-pair production at the LHC through NNLO QCD and NLO EW text, January 2017

WHIZARD -- simulating multi-particle processes at LHC and ILC text, January 2011

Recursive generation of one-loop amplitudes in the Standard Model text, January 2013

LHAPDF6: parton density access in the LHC precision era text, January 2015

Scattering amplitudes with open loops text, January 2012

Next-to-leading order QCD corrections to W^{+}W^{+}jj production in vector-boson fusion at the LHC text, January 2012

Electroweak production of two jets in association with a Z boson in proton–proton collisions at $\sqrt{s}= $ 13$\,\text {TeV}$ text, January 2018

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders dataset, January 2019

Next-to-leading order QCD corrections to W ⁺ W ⁻ production via vector-boson fusion
journal, July 2006

W + W + plus dijet production in the POWHEG BOX
journal, June 2011

Logarithmic electroweak corrections to e ⁺ e ⁻ → ν _e bar nu _e W ⁺ W ⁻
journal, March 2007

The effective W approximation
journal, January 1985

WW physics at future colliders
journal, August 1986

Production of very massive Higgs bosons
journal, March 1984

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders
journal, March 2009

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

Complete lowest-order calculations for four-lepton final states in electron-positron collisions
journal, January 1985

A new algorithm for adaptive multidimensional integration
journal, May 1978

WHIZARD—simulating multi-particle processes at LHC and ILC
journal, September 2011

Three-jet cross sections to next-to-leading order
journal, May 1996

Scattering Amplitudes with Open Loops
journal, March 2012

R E C O L A—REcursive Computation of One-Loop Amplitudes
journal, May 2017

Automation of NLO processes and decays and POWHEG matching in WHIZARD
journal, October 2016

Resonances and unitarity in weak boson scattering at the LHC
journal, November 2008

Vector-boson scattering at the LHC
conference, July 2018

Lusifer: a LUcid approach to SIx-FERmion production
journal, October 2002

Collier: A fortran-based complex one-loop library in extended regularizations
journal, March 2017

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

Non-factorizable photonic corrections to resonant production and decay of many unstable particles
journal, March 2016

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

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

A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX
journal, June 2010

Vbfnlo: A parton level Monte Carlo for processes with electroweak bosons
journal, September 2009

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

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

Automation of next-to-leading order computations in QCD: the FKS subtraction
journal, October 2009

Reducing full one-loop amplitudes to scalar integrals at the integrand level
journal, February 2007

One-loop corrections for e+e− annihilation into μ+μ− in the Weinberg model
journal, November 1979

A simple formula for reducing Feynman diagrams to scalar integrals
journal, July 1991

Reduction schemes for one-loop tensor integrals
journal, January 2006

Automation of one-loop QCD computations
journal, May 2011

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

Ninja: Automated integrand reduction via Laurent expansion for one-loop amplitudes
journal, October 2014

Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties
journal, February 2012

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

Large Electroweak Corrections to Vector-Boson Scattering at the Large Hadron Collider
journal, June 2017

All electroweak four-fermion processes in electron-positron collisions
journal, August 1994

Parton distributions for the LHC run II
journal, April 2015

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

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

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

An introduction to PYTHIA 8.2
journal, June 2015

Dipole showers and automated NLO matching in Herwig++
journal, November 2012

A proposal for a standard interface between Monte Carlo tools and one-loop programs
journal, September 2010

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
journal, February 2014

Tuning PYTHIA 8.1: the Monash 2013 tune
journal, August 2014

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

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

Electroweak production of two jets in association with a Z boson in proton–proton collisions at $$\sqrt{s}= $$ s = 13 $$\,\text {TeV}$$ TeV
journal, July 2018

Herwig++ physics and manual
journal, November 2008

Electroweak ZZjj production in the Standard Model and beyond in the POWHEG-BOX V2
journal, March 2014

Fully Differential Vector-Boson-Fusion Higgs Production at Next-to-Next-to-Leading Order
journal, August 2015

Second-order QCD effects in Higgs boson production through vector boson fusion
journal, June 2018

Top-pair production at the LHC through NNLO QCD and NLO EW
journal, October 2017

Precise predictions for $$V+$$ V + jets dark matter backgrounds
journal, December 2017

Automation of NLO processes and decays and POWHEG matching in WHIZARD
text, January 2016

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

Second-order QCD effects in Higgs boson production through vector boson fusion
text, January 2018

Automation of one-loop QCD computations
text, January 2011

Four-lepton production at hadron colliders: aMC@NLO predictions with theoretical uncertainties
text, January 2012

Study of vector boson scattering and search for new physics in events with two same-sign leptons and two jets
text, January 2015

Update of the Binoth Les Houches Accord for a standard interface between Monte Carlo tools and one-loop programs
text, January 2014

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders
dataset, January 2019

Collier: a fortran-based Complex One-Loop LIbrary in Extended Regularizations
dataset, January 2016

Study of Vector Boson Scattering and Search for New Physics in Events with Two Same-Sign Leptons and Two Jets
text, January 2015

Top-pair production at the LHC through NNLO QCD and NLO EW
text, January 2017

WHIZARD -- simulating multi-particle processes at LHC and ILC
text, January 2011

Recursive generation of one-loop amplitudes in the Standard Model
text, January 2013

LHAPDF6: parton density access in the LHC precision era
text, January 2015

Scattering amplitudes with open loops
text, January 2012

Next-to-leading order QCD corrections to W^{+}W^{+}jj production in vector-boson fusion at the LHC
text, January 2012

Electroweak production of two jets in association with a Z boson in proton–proton collisions at $\sqrt{s}= $ 13$\,\text {TeV}$
text, January 2018

PHANTOM: A Monte Carlo event generator for six parton final states at high energy colliders
dataset, January 2019

Electroweak production of two jets in association with a Z boson in proton-proton collisions at $\sqrt{s}= $ 13 $\,\text {TeV}
text, January 2017

VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
text, January 2009

Top-pair production at the LHC through NNLO QCD and NLO EW
text, January 2017