Merging NLO Multi-jet Calculations with Improved Unitarization - INSPIRE

DataBETA

Merging NLO Multi-jet Calculations with Improved Unitarization

Johannes Bellm
(
- Durham U. and
- Durham U., IPPP
)
,
Stefan Gieseke
(
- Karlsruhe U., ITP
)
,
Simon Plätzer
(
- Durham U. and
- Durham U., IPPP and
- Manchester U. and
- Vienna U.
)

May 18, 2017

29 pages

Published in:

Eur.Phys.J.C 78 (2018) 3, 244

Published: Mar 21, 2018

e-Print:

1705.06700 [hep-ph]

DOI:

10.1140/epjc/s10052-018-5723-2

Report number:

IPPP-17-39,
KA-TP-20-2017,
MAN-HEP-2017-07,
UWTHPH-2017-9,
MCNET-17-07,
HERWIG-2017-01

Experiments:

Herwig

View in:

ADS Abstract Service

reference search58 citations

Citations per year

Abstract: (Springer)

We present an algorithm to combine multiple matrix elements at LO and NLO with a parton shower. We build on the unitarized merging paradigm. The inclusion of higher orders and multiplicities reduce the scale uncertainties for observables sensitive to hard emissions, while preserving the features of inclusive quantities. The combination allows further soft and collinear emissions to be predicted by the all-order parton-shower approximation. We inspect the impact of terms that are formally but not parametrically negligible. We present results for a number of collider observables where multiple jets are observed, either on their own or in the presence of additional uncoloured particles. The algorithm is implemented in the event generator Herwig.

Note:

29 pages, 25 figures

parton: showers
multiplicity
higher-order: 0
higher-order: 2
numerical calculations: Monte Carlo
unitarity
collinear
parton: production
HERWIG
jet: production

References(73)

Figures(24)

Herwig++ Physics and Manual

et al.

- Eur.Phys.J.C 58 (2008) 639-707
•
e-Print:
- 0803.0883
•
DOI:
- 10.1140/epjc/s10052-008-0798-9

Herwig 7.0/Herwig++ 3.0 release note

Johannes Bellm
(
- KIT, Karlsruhe, TP and
- Durham U., IPPP and
- Durham U.
)
,
Stefan Gieseke
(
- KIT, Karlsruhe, TP
)
,
David Grellscheid
(
- Durham U., IPPP and
- Durham U.
)
,
Simon Plätzer
(
- Durham U. and
- Durham U., IPPP and
- Manchester U.
)
,
Michael Rauch
(
- KIT, Karlsruhe, TP
)

et al.

- Eur.Phys.J.C 76 (2016) 4, 196
•
e-Print:
- 1512.01178
•
DOI:
- 10.1140/epjc/s10052-016-4018-8

An introduction to PYTHIA 8.2

et al.

- Comput.Phys.Commun. 191 (2015) 159-177
•
e-Print:
- 1410.3012
•
DOI:
- 10.1016/j.cpc.2015.01.024

Event generation with SHERPA 1.1

et al.

- JHEP 02 (2009) 007
•
e-Print:
- 0811.4622
•
DOI:
- 10.1088/1126-6708/2009/02/007

Matrix element corrections to parton shower algorithms

Michael H. Seymour
(
- Lund U.
)

- Comput.Phys.Commun. 90 (1995) 95-101
•
e-Print:
- hep-ph/9410414
•
DOI:
- 10.1016/0010-4655(95)00064-M

QCD radiation off heavy particles

- Nucl.Phys.B 603 (2001) 297-342
•
e-Print:
- hep-ph/0010012
•
DOI:
- 10.1016/S0550-3213(01)00099-2

Multijet matrix elements and shower evolution in hadronic collisions: $W b \bar{b}$ + $n$ jets as a case study

Michelangelo L. Mangano
(
- CERN
)
,
Mauro Moretti
(
- Ferrara U. and
- INFN, Ferrara
)
,
Roberto Pittau
(
- Turin U. and
- INFN, Turin
)

- Nucl.Phys.B 632 (2002) 343-362
•
e-Print:
- hep-ph/0108069
•
DOI:
- 10.1016/S0550-3213(02)00249-3

QCD matrix elements + parton showers

S. Catani
(
- CERN
)
,
F. Krauss
(
- Cambridge U.
)
,
R. Kuhn
(
- Dresden, Tech. U. and
- Dresden, Max Planck Inst.
)
,
B.R. Webber
(
- Cambridge U.
)

- JHEP 11 (2001) 063
•
e-Print:
- hep-ph/0109231
•
DOI:
- 10.1088/1126-6708/2001/11/063

Correcting the color dipole cascade model with fixed order matrix elements

Leif Lonnblad
(
- Lund U.
)

- JHEP 05 (2002) 046
•
e-Print:
- hep-ph/0112284
•
DOI:
- 10.1088/1126-6708/2002/05/046

Matrix elements and parton showers in hadronic interactions

F. Krauss
(
- Dresden, Tech. U.
)

- JHEP 08 (2002) 015
•
e-Print:
- hep-ph/0205283
•
DOI:
- 10.1088/1126-6708/2002/08/015

Comparative study of various algorithms for the merging of parton showers and matrix elements in hadronic collisions

et al.

- Eur.Phys.J.C 53 (2008) 473-500
•
e-Print:
- 0706.2569
•
DOI:
- 10.1140/epjc/s10052-007-0490-5

Matching NLO QCD computations and parton shower simulations

Stefano Frixione
(
- Annecy, LAPP
)
,
Bryan R. Webber
(
- Cambridge U.
)

- JHEP 06 (2002) 029
•
e-Print:
- hep-ph/0204244
•
DOI:
- 10.1088/1126-6708/2002/06/029

A New method for combining NLO QCD with shower Monte Carlo algorithms

Paolo Nason
(
- INFN, Milan
)

- JHEP 11 (2004) 040
•
e-Print:
- hep-ph/0409146
•
DOI:
- 10.1088/1126-6708/2004/11/040

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

Simone Alioli
(
- DESY, Zeuthen and
- INFN, Milan Bicocca
)
,
Paolo Nason
(
- INFN, Milan Bicocca
)
,
Carlo Oleari
(
- Milan Bicocca U. and
- INFN, Milan Bicocca
)
,
Emanuele Re
(
- Durham U., IPPP and
- INFN, Milan Bicocca
)

- JHEP 06 (2010) 043
•
e-Print:
- 1002.2581
•
DOI:
- 10.1007/JHEP06(2010)043

A Modified CKKW matrix element merging approach to angular-ordered parton showers

Keith Hamilton
(
- Louvain U., CP3
)
,
Peter Richardson
(
- Durham U., IPPP
)
,
Jon Tully
(
- Durham U., IPPP
)

- JHEP 11 (2009) 038
•
e-Print:
- 0905.3072
•
DOI:
- 10.1088/1126-6708/2009/11/038

A Positive-Weight Next-to-Leading Order Monte Carlo Simulation for Higgs Boson Production

Keith Hamilton
(
- Louvain U., CP3
)
,
Peter Richardson
(
- Durham U., IPPP
)
,
Jon Tully
(
- Durham U., IPPP
)

- JHEP 04 (2009) 116
•
e-Print:
- 0903.4345
•
DOI:
- 10.1088/1126-6708/2009/04/116

A Positive-Weight Next-to-Leading Order Monte Carlo Simulation of Drell-Yan Vector Boson Production

Keith Hamilton
(
- Louvain U., CP3
)
,
Peter Richardson
(
- Durham U., IPPP and
- CERN
)
,
Jon Tully
(
- Durham U., IPPP
)

- JHEP 10 (2008) 015
•
e-Print:
- 0806.0290
•
DOI:
- 10.1088/1126-6708/2008/10/015

Combining Higher-Order Resummation with Multiple NLO Calculations and Parton Showers in GENEVA

Simone Alioli
(
- LBL, Berkeley
)
,
Christian W. Bauer
(
- LBL, Berkeley
)
,
Calvin J. Berggren
(
- LBL, Berkeley
)
,
Andrew Hornig
(
- Washington U., Seattle
)
,
Frank J. Tackmann
(
- DESY
)

et al.

- JHEP 09 (2013) 120
•
e-Print:
- 1211.7049
•
DOI:
- 10.1007/JHEP09(2013)120

Antenna Showers with One-Loop Matrix Elements

L. Hartgring
(
- NIKHEF, Amsterdam
)
,
E. Laenen
(
- Utrecht U. and
- Amsterdam U. and
- NIKHEF, Amsterdam
)
,
P. Skands
(
- CERN
)

- JHEP 10 (2013) 127
•
e-Print:
- 1303.4974
•
DOI:
- 10.1007/JHEP10(2013)127

Matching NLO QCD with parton shower in Monte Carlo scheme — the KrkNLO method

S. Jadach
(
- Cracow, INP
)
,
W. Płaczek
(
- Jagiellonian U.
)
,
S. Sapeta
(
- CERN
)
,
A. Siódmok
(
- Cracow, INP and
- CERN
)
,
M. Skrzypek
(
- Cracow, INP
)

- JHEP 10 (2015) 052
•
e-Print:
- 1503.06849
•
DOI:
- 10.1007/JHEP10(2015)052

Next-to-leading order calculation of three jet observables in hadron hadron collision

Zoltan Nagy
(
- Oregon U.
)

- Phys.Rev.D 68 (2003) 094002
•
e-Print:
- hep-ph/0307268
•
DOI:
- 10.1103/PhysRevD.68.094002

RECOLA: REcursive Computation of One-Loop Amplitudes

et al.

- Comput.Phys.Commun. 214 (2017) 140-173
•
e-Print:
- 1605.01090
•
DOI:
- 10.1016/j.cpc.2017.01.004

G $\scriptsize{O}$ S $\scriptsize{AM}$ -2.0: a tool for automated one-loop calculations within the Standard Model and beyond

GoSam

Collaboration

•

Gavin Cullen
(
- DESY, Zeuthen
)

et al.

- Eur.Phys.J.C 74 (2014) 8, 3001
•
e-Print:
- 1404.7096
•
DOI:
- 10.1140/epjc/s10052-014-3001-5

Automated One-Loop Calculations with GoSam

GoSam

Collaboration

•

Gavin Cullen
(
- DESY, Zeuthen and
- Edinburgh U.
)

et al.

- Eur.Phys.J.C 72 (2012) 1889
•
e-Print:
- 1111.2034
•
DOI:
- 10.1140/epjc/s10052-012-1889-1

Scattering Amplitudes with Open Loops

- Phys.Rev.Lett. 108 (2012) 111601
•
e-Print:
- 1111.5206
•
DOI:
- 10.1103/PhysRevLett.108.111601

1-25 of 73
1
2
3
25 / page