Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO

van Deurzen, Hans; Frederix, Rikkert; Hirschi, Valentin; Luisoni, Gionata; Mastrolia, Pierpaolo; Ossola, Giovanni

doi:10.1140/epjc/s10052-016-4048-2

Title: Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO

Abstract

Here, we present an interface between the multipurpose Monte Carlo tool MadGraph5_aMC@NLO and the automated amplitude generator GoSam. As a first application of this novel framework, we compute the NLO corrections to pp→ tt¯H and pp→ tt¯γγ matched to a parton shower. In the phenomenological analyses of these processes, we focus our attention on observables which are sensitive to the polarisation of the top quarks.

Authors:

van Deurzen, Hans ^[1]; Frederix, Rikkert ^[2]; Hirschi, Valentin ^[3]; Luisoni, Gionata ^[1]; Mastrolia, Pierpaolo ^[4]; Ossola, Giovanni ^[5]

Max-Planck-Institut fur Physik, Munchen (Germany)
Technische Univ., Munchen, Garching (Germany)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Max-Planck-Institut fur Physik, Munchen (Germany); Univ. di Padova and INFN Sezione di Padova, Padova (Italy)
New York City College of Technology, City Univ. of New York, Brooklyn, NY (United States); City Univ. of New York, New York, NY (United States)

Publication Date:: Fri Apr 22 00:00:00 EDT 2016

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

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

OSTI Identifier:: 1257743

Report Number(s):: SLAC-PUB-16555
Journal ID: ISSN 1434-6044

Grant/Contract Number:: AC02-76SF00515

Resource Type:: Accepted Manuscript

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

Additional Journal Information:: Journal Volume: 78; Journal Issue: 4; Journal ID: ISSN 1434-6044

Publisher:: Springer

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; QCD; hadronic colliders; top physics

Citation Formats


                    van Deurzen, Hans, Frederix, Rikkert, Hirschi, Valentin, Luisoni, Gionata, Mastrolia, Pierpaolo, and Ossola, Giovanni. Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO.  United States: N. p., 2016. 
Web.  doi:10.1140/epjc/s10052-016-4048-2.

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                    van Deurzen, Hans, Frederix, Rikkert, Hirschi, Valentin, Luisoni, Gionata, Mastrolia, Pierpaolo, & Ossola, Giovanni. Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO.  United States.  https://doi.org/10.1140/epjc/s10052-016-4048-2

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                    van Deurzen, Hans, Frederix, Rikkert, Hirschi, Valentin, Luisoni, Gionata, Mastrolia, Pierpaolo, and Ossola, Giovanni. Fri .  
"Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO".  United States.  https://doi.org/10.1140/epjc/s10052-016-4048-2.  https://www.osti.gov/servlets/purl/1257743.

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@article{osti_1257743,

  title        = {Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO},

  author       = {van Deurzen, Hans and Frederix, Rikkert and Hirschi, Valentin and Luisoni, Gionata and Mastrolia, Pierpaolo and Ossola, Giovanni},

  abstractNote = {Here, we present an interface between the multipurpose Monte Carlo tool MadGraph5_aMC@NLO and the automated amplitude generator GoSam. As a first application of this novel framework, we compute the NLO corrections to pp→ tt¯H and pp→ tt¯γγ matched to a parton shower. In the phenomenological analyses of these processes, we focus our attention on observables which are sensitive to the polarisation of the top quarks.},

  doi          = {10.1140/epjc/s10052-016-4048-2},

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

  number       = 4,

  volume       = 78,

  place        = {United States},

  year         = {Fri Apr 22 00:00:00 EDT 2016},

  month        = {Fri Apr 22 00:00:00 EDT 2016}

}

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Works referencing / citing this record:

Study of top quark dipole interactions in $t \bar{t}$ production associated with two heavy gauge bosons at the LHC
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Etesami, Seyed Mohsen; Khatibi, Sara; Mohammadi Najafabadi, Mojtaba
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Squark production in R-symmetric SUSY with Dirac gluinos: NLO corrections
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Diessner, Philip; Kotlarski, Wojciech; Liebschner, Sebastian
Deutsches Elektronen-Synchrotron, DESY, Hamburg
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Squark production in R-symmetric SUSY with Dirac gluinos: NLO corrections
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Diessner, Philip; Kotlarski, Wojciech; Liebschner, Sebastian
Journal of High Energy Physics, Vol. 2017, Issue 10
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Squark production in R-symmetric SUSY with Dirac gluinos: NLO corrections
text, January 2017

Diessner, Philip; Kotlarski, Wojciech; Liebschner, Sebastian
Deutsches Elektronen-Synchrotron, DESY, Hamburg
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Squark production in R-symmetric SUSY with Dirac gluinos: NLO corrections
text, January 2017

Diessner, Philip; Kotlarski, Wojciech; Liebschner, Sebastian
arXiv
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Study of top quark dipole interactions in $t\bar{t}$ production associated with two heavy gauge bosons at the LHC
text, January 2017

Etesami, Seyed Mohsen; Khatibi, Sara; Najafabadi, Mojtaba Mohammadi
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Title: Spin polarisation of tt¯γγ production at NLO+PS with GoSam interfaced to MadGraph5_aMC@NLO

Abstract

Citation Formats

Automatic generation of tree level helicity amplitudes journal, July 1994

HELAC: A package to compute electroweak helicity amplitudes journal, November 2000

ALPGEN, a generator for hard multiparton processes in hadronic collisions journal, July 2003

MadEvent: automatic event generation with MadGraph journal, February 2003

SHERPA 1. , a proof-of-concept version journal, February 2004

CompHEP 4.4—automatic computations from Lagrangians to events journal, November 2004

MadGraph/MadEvent v4: the new web generation journal, September 2007

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

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

On-shell methods in perturbative QCD journal, July 2007

Loop amplitudes in gauge theories: modern analytic approaches journal, October 2011

One-loop calculations in quantum field theory: From Feynman diagrams to unitarity cuts journal, September 2012

On the numerical evaluation of one-loop amplitudes: the gluonic case journal, June 2008

Automated implementation of on-shell methods for one-loop amplitudes journal, August 2008

Automated one-loop calculations with GoSam journal, March 2012

Recursive generation of one-loop amplitudes in the Standard Model journal, April 2013

Event generation with SHERPA 1.1 journal, February 2009

Helac-Nlo journal, March 2013

Automation of one-loop QCD computations journal, May 2011

Numerical evaluation of virtual corrections to multi-jet production in massless QCD journal, August 2013

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

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

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

MINLO: multi-scale improved NLO journal, October 2012

QCD matrix elements + parton showers. The NLO case journal, April 2013

NLO QCD matrix elements + parton showers in e+e− → hadrons journal, January 2013

Merging meets matching in MC@NLO journal, December 2012

Merging multi-leg NLO matrix elements with parton showers journal, March 2013

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

Enhancing the t t ¯ H $$ t\overline{t} H $$ signal through top-quark spin polarization effects at the LHC journal, July 2014

Irreducible background and interference effects for Higgs-boson production in association with a top-quark pair journal, April 2015

Angular distributions in t t ¯ H ( H → b b ¯ ) reconstructed events at the LHC journal, August 2015

Hadroproduction of t–anti-t pair with two isolated photons with PowHel journal, August 2015

Automatic Feynman Graph Generation journal, April 1993

Optimising code generation with haggies journal, July 2010

spinney: A Form library for helicity spinors journal, November 2011

FORM version 4.0 journal, May 2013

Integrand reduction of one-loop scattering amplitudes through Laurent series expansion journal, June 2012

Multi-leg one-loop massive amplitudes from integrand reduction via Laurent expansion journal, March 2014

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

Masses, fermions and generalized D-dimensional unitarity journal, November 2009

Optimizing the reduction of one-loop amplitudes journal, June 2008

Scattering amplitudes from unitarity-based reduction algorithm at the integrand-level journal, August 2010

Associated Higgs Production at NLO with GoSam journal, January 2013

golem95: A numerical program to calculate one-loop tensor integrals with up to six external legs journal, November 2009

Tensorial reconstruction at the integrand level journal, October 2010

Golem95C: A library for one-loop integrals with complex masses journal, October 2011

Tools for NLO automation: Extension of the golem95C integral library journal, June 2014

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

FF — a package to evaluate one-loop Feynman diagrams journal, July 1991

Scalar one-loop integrals for QCD journal, February 2008

UFO – The Universal FeynRules Output journal, June 2012

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

NLO QCD corrections to the production of Higgs plus two jets at the LHC journal, April 2013

Next-to-Leading-Order QCD Corrections to Higgs Boson Production Plus Three Jets in Gluon Fusion journal, September 2013

NLO QCD corrections to the production of W+W− plus two jets at the LHC journal, July 2012

SUSY-QCD corrections to neutralino pair production in association with a jet journal, April 2013

Photon isolation effects at NLO in γγ+jet final states in hadronic collisions journal, June 2013

Precise QCD Predictions for the Production of a Photon Pair in Association with Two Jets journal, November 2013

NLO QCD corrections to diphoton plus jet production through graviton exchange journal, November 2013

MadDipole: automation of the dipole subtraction method in MadGraph/MadEvent journal, September 2008

Zero and one jet combined next-to-leading order analysis of the top quark forward-backward asymmetry journal, July 2013

Next-to-Leading-Order QCD Corrections to Higgs Boson Production in Association with a Top Quark Pair and a Jet journal, October 2013

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

HW ±/HZ + 0 and 1 jet at NLO with the POWHEG BOX interfaced to GoSam and their merging within MiNLO journal, October 2013

MadGraph 5: going beyond journal, June 2011

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

On the rational terms of the one-loop amplitudes journal, May 2008

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

PYTHIA 6.4 physics and manual journal, May 2006

HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes) journal, January 2001

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Herwig++ physics and manual journal, November 2008

New Generation of Parton Distributions with Uncertainties from Global QCD Analysis journal, July 2002

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

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

Automatic generation of tree level helicity amplitudes
journal, July 1994

HELAC: A package to compute electroweak helicity amplitudes
journal, November 2000

ALPGEN, a generator for hard multiparton processes in hadronic collisions
journal, July 2003

MadEvent: automatic event generation with MadGraph
journal, February 2003

SHERPA 1. , a proof-of-concept version
journal, February 2004

CompHEP 4.4—automatic computations from Lagrangians to events
journal, November 2004

MadGraph/MadEvent v4: the new web generation
journal, September 2007

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

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

On-shell methods in perturbative QCD
journal, July 2007

Loop amplitudes in gauge theories: modern analytic approaches
journal, October 2011

One-loop calculations in quantum field theory: From Feynman diagrams to unitarity cuts
journal, September 2012

On the numerical evaluation of one-loop amplitudes: the gluonic case
journal, June 2008

Automated implementation of on-shell methods for one-loop amplitudes
journal, August 2008

Automated one-loop calculations with GoSam
journal, March 2012

Recursive generation of one-loop amplitudes in the Standard Model
journal, April 2013

Event generation with SHERPA 1.1
journal, February 2009

Helac-Nlo
journal, March 2013

Automation of one-loop QCD computations
journal, May 2011

Numerical evaluation of virtual corrections to multi-jet production in massless QCD
journal, August 2013

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

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

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

MINLO: multi-scale improved NLO
journal, October 2012

QCD matrix elements + parton showers. The NLO case
journal, April 2013

NLO QCD matrix elements + parton showers in e+e− → hadrons
journal, January 2013

Merging meets matching in MC@NLO
journal, December 2012

Merging multi-leg NLO matrix elements with parton showers
journal, March 2013

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

Enhancing the t t ¯ H $$ t\overline{t} H $$ signal through top-quark spin polarization effects at the LHC
journal, July 2014

Irreducible background and interference effects for Higgs-boson production in association with a top-quark pair
journal, April 2015

Angular distributions in $t \bar{t} H (H \to b \bar{b})$ reconstructed events at the LHC
journal, August 2015

Hadroproduction of t–anti-t pair with two isolated photons with PowHel
journal, August 2015

Automatic Feynman Graph Generation
journal, April 1993

Optimising code generation with haggies
journal, July 2010

spinney: A Form library for helicity spinors
journal, November 2011

FORM version 4.0
journal, May 2013

Integrand reduction of one-loop scattering amplitudes through Laurent series expansion
journal, June 2012

Multi-leg one-loop massive amplitudes from integrand reduction via Laurent expansion
journal, March 2014

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

Masses, fermions and generalized D-dimensional unitarity
journal, November 2009

Optimizing the reduction of one-loop amplitudes
journal, June 2008

Scattering amplitudes from unitarity-based reduction algorithm at the integrand-level
journal, August 2010

Associated Higgs Production at NLO with GoSam
journal, January 2013

golem95: A numerical program to calculate one-loop tensor integrals with up to six external legs
journal, November 2009

Tensorial reconstruction at the integrand level
journal, October 2010

Golem95C: A library for one-loop integrals with complex masses
journal, October 2011

Tools for NLO automation: Extension of the golem95C integral library
journal, June 2014

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

FF — a package to evaluate one-loop Feynman diagrams
journal, July 1991

Scalar one-loop integrals for QCD
journal, February 2008

UFO – The Universal FeynRules Output
journal, June 2012

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

NLO QCD corrections to the production of Higgs plus two jets at the LHC
journal, April 2013

Next-to-Leading-Order QCD Corrections to Higgs Boson Production Plus Three Jets in Gluon Fusion
journal, September 2013

NLO QCD corrections to the production of W+W− plus two jets at the LHC
journal, July 2012

SUSY-QCD corrections to neutralino pair production in association with a jet
journal, April 2013

Photon isolation effects at NLO in γγ+jet final states in hadronic collisions
journal, June 2013

Precise QCD Predictions for the Production of a Photon Pair in Association with Two Jets
journal, November 2013

NLO QCD corrections to diphoton plus jet production through graviton exchange
journal, November 2013

MadDipole: automation of the dipole subtraction method in MadGraph/MadEvent
journal, September 2008

Zero and one jet combined next-to-leading order analysis of the top quark forward-backward asymmetry
journal, July 2013

Next-to-Leading-Order QCD Corrections to Higgs Boson Production in Association with a Top Quark Pair and a Jet
journal, October 2013

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

HW ±/HZ + 0 and 1 jet at NLO with the POWHEG BOX interfaced to GoSam and their merging within MiNLO
journal, October 2013

MadGraph 5: going beyond
journal, June 2011

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

On the rational terms of the one-loop amplitudes
journal, May 2008

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

PYTHIA 6.4 physics and manual
journal, May 2006

HERWIG 6: an event generator for hadron emission reactions with interfering gluons (including supersymmetric processes)
journal, January 2001

An introduction to PYTHIA 8.2
journal, June 2015

Herwig++ physics and manual
journal, November 2008

New Generation of Parton Distributions with Uncertainties from Global QCD Analysis
journal, July 2002

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

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

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

Charge asymmetry of heavy quarks at hadron colliders
journal, February 1999

Shedding light on the $ t\overline{t} $ asymmetry: the photon handle
journal, April 2014