Parton shower and NLO-matching uncertainties in Higgs boson pair production

Jones, Stephen; Kuttimalai, Silvan

doi:10.1007/jhep02(2018)176

Title: Parton shower and NLO-matching uncertainties in Higgs boson pair production

Abstract

We perform a detailed study of NLO parton shower matching uncertainties in Higgs boson pair production through gluon fusion at the LHC based on a generic and process independent implementation of NLO subtraction and parton shower matching schemes for loop-induced processes in the Sherpa event generator. We take into account the full top-quark mass dependence in the two-loop virtual corrections and compare the results to an effective theory approximation. In the full calculation, our findings suggest large parton shower matching uncertainties that are absent in the effective theory approximation. Here, we observe large uncertainties even in regions of phase space where fixed-order calculations are theoretically well motivated and parton shower effects expected to be small. We compare our results to NLO matched parton shower simulations and analytic resummation results that are available in the literature.

Authors:

Jones, Stephen ^[1];

^[2]

Max Planck Inst. for Physics, Munich (Germany)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

Publication Date:: Wed Feb 28 00:00:00 EST 2018

Research Org.:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1427164

Report Number(s):: SLAC-PUB-17190
Journal ID: ISSN 1029-8479; PII: 7707; TRN: US1802456

Grant/Contract Number:: AC02-76SF00515

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: 2; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

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

Citation Formats


                    Jones, Stephen, and Kuttimalai, Silvan. Parton shower and NLO-matching uncertainties in Higgs boson pair production.  United States: N. p., 2018. 
Web.  doi:10.1007/jhep02(2018)176.

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                    Jones, Stephen, & Kuttimalai, Silvan. Parton shower and NLO-matching uncertainties in Higgs boson pair production.  United States.  https://doi.org/10.1007/jhep02(2018)176

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                    Jones, Stephen, and Kuttimalai, Silvan. Wed .  
"Parton shower and NLO-matching uncertainties in Higgs boson pair production".  United States.  https://doi.org/10.1007/jhep02(2018)176.  https://www.osti.gov/servlets/purl/1427164.

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@article{osti_1427164,

  title        = {Parton shower and NLO-matching uncertainties in Higgs boson pair production},

  author       = {Jones, Stephen and Kuttimalai, Silvan},

  abstractNote = {We perform a detailed study of NLO parton shower matching uncertainties in Higgs boson pair production through gluon fusion at the LHC based on a generic and process independent implementation of NLO subtraction and parton shower matching schemes for loop-induced processes in the Sherpa event generator. We take into account the full top-quark mass dependence in the two-loop virtual corrections and compare the results to an effective theory approximation. In the full calculation, our findings suggest large parton shower matching uncertainties that are absent in the effective theory approximation. Here, we observe large uncertainties even in regions of phase space where fixed-order calculations are theoretically well motivated and parton shower effects expected to be small. We compare our results to NLO matched parton shower simulations and analytic resummation results that are available in the literature.},

  doi          = {10.1007/jhep02(2018)176},

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

  number       = 2,

  volume       = 2018,

  place        = {United States},

  year         = {Wed Feb 28 00:00:00 EST 2018},

  month        = {Wed Feb 28 00:00:00 EST 2018}

}

Copy to clipboard

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Abstract We evaluate the theoretical uncertainties in next-to-leading order plus parton shower predictions for top quark pair production and decay in hadronic collisions. Our work is carried out using the Herwig 7 event generator and presents an in-depth study of variations in matching schemes with two systematically different shower algorithms, the traditional angular-ordered and alternative dipole shower. We also present all of the required extensions of the Herwig dipole shower algorithm to properly take into account quark mass effects, as well as its ability to perform top quark decays. The predictions are compared at parton level as well as tomore »« less
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https://doi.org/10.1140/epjc/s10052-019-7370-7

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Title: Parton shower and NLO-matching uncertainties in Higgs boson pair production

Abstract

Citation Formats

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

NLO Higgs boson production via gluon fusion matched with shower in POWHEG journal, April 2009

Virtual corrections to Higgs boson pair production in the large top quark mass limit journal, November 2014

A critical appraisal of NLO+PS matching methods journal, September 2012

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

Scattering Amplitudes with Open Loops journal, March 2012

A brief introduction to PYTHIA 8.1 journal, June 2008

Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD journal, November 2013

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

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

Higgs boson pair production via gluon fusion journal, November 1988

Higgs Boson Pair Production in Gluon Fusion at Next-to-Leading Order with Full Top-Quark Mass Dependence journal, June 2016

OneLOop: For the evaluation of one-loop scalar functions journal, November 2011

Pair production of neutral Higgs particles in gluon-gluon collisions journal, November 1996

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

Automated event generation for loop-induced processes journal, October 2015

Higgs pair production at the LHC with NLO and parton-shower effects journal, May 2014

A parton shower algorithm based on Catani-Seymour dipole factorisation journal, March 2008

NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers journal, August 2017

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

Next-to-Leading-Order Event Generators journal, November 2012

On the Higgs boson pair production at the LHC journal, October 2013

Two-loop virtual corrections to Higgs pair production journal, July 2013

Automating dipole subtraction for QCD NLO calculations journal, December 2007

An introduction to PYTHIA 8.2 journal, June 2015

Event generation with SHERPA 1.1 journal, February 2009

Twin Higgs-boson production journal, October 1987

The midpoint between dipole and parton showers journal, September 2015

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

Higgs decay to τ+τ−A possible signature of intermediate mass Higgs bosons at high energy hadron colliders journal, February 1988

Neutral Higgs-boson pair production at hadron colliders: QCD corrections journal, November 1998

Higgs boson pair production: Top quark mass effects at NLO and NNLO journal, November 2015

Neutral Higgs boson pair production at hadron colliders: QCD corrections text, January 1998

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

Higgs boson pair production merged to one jet text, January 2014

Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production text, January 2015

Higgs boson pair production in gluon fusion at next-to-leading order with full top-quark mass dependence text, January 2016

Differential Higgs boson pair production at next-to-next-to-leading order in QCD text, January 2016

Higgs boson pair production: Top quark mass effects at NLO and NNLO text, January 2015

Higgs pair production at the LHC with NLO and parton-shower effects text, January 2014

Higgs Boson pair production merged to one jet text, January 2014

Virtual corrections to Higgs boson pair production in the large top quark mass limit text, January 2014

Scattering amplitudes with open loops text, January 2012

Full top quark mass dependence in Higgs boson pair production at NLO text, January 2016

A parton shower algorithm based on Catani-Seymour dipole factorisation text, January 2007

NLO Higgs boson production via gluon fusion matched with shower in POWHEG text, January 2008

Automated one-loop calculations: a proof of concept text, January 2009

On the Higgs boson pair production at the LHC text, January 2013

Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD text, January 2013

Higgs Boson pair production merged to one jet text, January 2014

Higgs pair production at the LHC with NLO and parton-shower effects text, January 2014

Automated event generation for loop-induced processes preprint, January 2015

Higgs boson pair production: top quark mass effects at NLO and NNLO text, January 2015

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

The Higgs transverse momentum spectrum with finite quark masses beyond leading order text, January 2016

Differential Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD text, January 2016

NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers text, January 2017

Pair Production of Neutral Higgs Particles in Gluon--Gluon Collisions text, January 1996

Neutral Higgs-Boson Pair Production at Hadron Colliders: QCD Corrections text, January 1998

Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO journal, November 2014

Higgs boson pair production: Top quark mass effects at NLO and NNLO journal, November 2015

Higgs pair production at the LHC with NLO and parton-shower effects journal, May 2014

Full top quark mass dependence in Higgs boson pair production at NLO text, January 2016

Double-Higgs boson production in the high-energy limit: planar master integrals journal, March 2018

Probing the scalar potential via double Higgs boson production at hadron colliders journal, April 2019

Heavy neutrinos with dynamic jet vetoes: multilepton searches at $$ \sqrt{s}=14 $$, 27, and 100 TeV journal, June 2019

Soft gluon resummation for Higgs boson pair production including finite Mt effects journal, August 2018

Sleptons without hadrons journal, October 2019

Monojet signatures from heavy colored particles: future collider sensitivities and theoretical uncertainties journal, August 2018

Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme journal, May 2019

Resonance-aware subtraction in the dipole method journal, August 2019

Higgs boson pair production at NNLO with top quark mass effects text, January 2018

Double-Higgs boson production in the high-energy limit : planar master integrals text, January 2018

Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme text, January 2019

Sleptons without hadrons text, January 2019

Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion text, January 2019

Soft gluon resummation for Higgs boson pair production including finite Mt effects text, January 2018

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

NLO Higgs boson production via gluon fusion matched with shower in POWHEG
journal, April 2009

Virtual corrections to Higgs boson pair production in the large top quark mass limit
journal, November 2014

A critical appraisal of NLO+PS matching methods
journal, September 2012

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

Scattering Amplitudes with Open Loops
journal, March 2012

A brief introduction to PYTHIA 8.1
journal, June 2008

Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD
journal, November 2013

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

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

Higgs boson pair production via gluon fusion
journal, November 1988

Higgs Boson Pair Production in Gluon Fusion at Next-to-Leading Order with Full Top-Quark Mass Dependence
journal, June 2016

OneLOop: For the evaluation of one-loop scalar functions
journal, November 2011

Pair production of neutral Higgs particles in gluon-gluon collisions
journal, November 1996

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

Automated event generation for loop-induced processes
journal, October 2015

Higgs pair production at the LHC with NLO and parton-shower effects
journal, May 2014

A parton shower algorithm based on Catani-Seymour dipole factorisation
journal, March 2008

NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers
journal, August 2017

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

Next-to-Leading-Order Event Generators
journal, November 2012

On the Higgs boson pair production at the LHC
journal, October 2013

Two-loop virtual corrections to Higgs pair production
journal, July 2013

Automating dipole subtraction for QCD NLO calculations
journal, December 2007

An introduction to PYTHIA 8.2
journal, June 2015

Event generation with SHERPA 1.1
journal, February 2009

Twin Higgs-boson production
journal, October 1987

The midpoint between dipole and parton showers
journal, September 2015

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

Higgs decay to τ+τ−A possible signature of intermediate mass Higgs bosons at high energy hadron colliders
journal, February 1988

Neutral Higgs-boson pair production at hadron colliders: QCD corrections
journal, November 1998

Higgs boson pair production: Top quark mass effects at NLO and NNLO
journal, November 2015

Neutral Higgs boson pair production at hadron colliders: QCD corrections
text, January 1998

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

Higgs boson pair production merged to one jet
text, January 2014

Mass effects in the Higgs-gluon coupling: boosted vs. off-shell production
text, January 2015

Higgs boson pair production in gluon fusion at next-to-leading order with full top-quark mass dependence
text, January 2016

Differential Higgs boson pair production at next-to-next-to-leading order in QCD
text, January 2016

Higgs boson pair production: Top quark mass effects at NLO and NNLO
text, January 2015

Higgs pair production at the LHC with NLO and parton-shower effects
text, January 2014

Higgs Boson pair production merged to one jet
text, January 2014

Virtual corrections to Higgs boson pair production in the large top quark mass limit
text, January 2014

Scattering amplitudes with open loops
text, January 2012

Full top quark mass dependence in Higgs boson pair production at NLO
text, January 2016

A parton shower algorithm based on Catani-Seymour dipole factorisation
text, January 2007

NLO Higgs boson production via gluon fusion matched with shower in POWHEG
text, January 2008

Automated one-loop calculations: a proof of concept
text, January 2009

On the Higgs boson pair production at the LHC
text, January 2013

Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD
text, January 2013

Higgs Boson pair production merged to one jet
text, January 2014

Higgs pair production at the LHC with NLO and parton-shower effects
text, January 2014

Automated event generation for loop-induced processes
preprint, January 2015

Higgs boson pair production: top quark mass effects at NLO and NNLO
text, January 2015

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

The Higgs transverse momentum spectrum with finite quark masses beyond leading order
text, January 2016

Differential Higgs Boson Pair Production at Next-to-Next-to-Leading Order in QCD
text, January 2016

NLO predictions for Higgs boson pair production with full top quark mass dependence matched to parton showers
text, January 2017

Pair Production of Neutral Higgs Particles in Gluon--Gluon Collisions
text, January 1996

Neutral Higgs-Boson Pair Production at Hadron Colliders: QCD Corrections
text, January 1998

Top-quark mass effects in double and triple Higgs production in gluon-gluon fusion at NLO
journal, November 2014

Higgs boson pair production: Top quark mass effects at NLO and NNLO
journal, November 2015

Higgs pair production at the LHC with NLO and parton-shower effects
journal, May 2014

Full top quark mass dependence in Higgs boson pair production at NLO
text, January 2016

Double-Higgs boson production in the high-energy limit: planar master integrals
journal, March 2018

Probing the scalar potential via double Higgs boson production at hadron colliders
journal, April 2019

Heavy neutrinos with dynamic jet vetoes: multilepton searches at $$ \sqrt{s}=14 $$, 27, and 100 TeV
journal, June 2019

Soft gluon resummation for Higgs boson pair production including finite Mt effects
journal, August 2018

Sleptons without hadrons
journal, October 2019

Monojet signatures from heavy colored particles: future collider sensitivities and theoretical uncertainties
journal, August 2018

Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme
journal, May 2019

Resonance-aware subtraction in the dipole method
journal, August 2019

Higgs boson pair production at NNLO with top quark mass effects
text, January 2018

Double-Higgs boson production in the high-energy limit : planar master integrals
text, January 2018

Gluon fusion into Higgs pairs at NLO QCD and the top mass scheme
text, January 2019

Sleptons without hadrons
text, January 2019

Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion
text, January 2019

Soft gluon resummation for Higgs boson pair production including finite Mt effects
text, January 2018

Probing the trilinear Higgs boson coupling in di-Higgs production at NLO QCD including parton shower effects
text, January 2019

Double Higgs boson production at NLO: combining the exact numerical result and high-energy expansion
text, January 2019

Double-Higgs boson production in the high-energy limit: planar master integrals
text, January 2018