The Matrix Element Method at next-to-leading order QCD for hadronic collisions: Single top-quark production at the LHC as an example application - INSPIRE

DataBETA

The Matrix Element Method at next-to-leading order QCD for hadronic collisions: Single top-quark production at the LHC as an example application

Till Martini
(
- Humboldt U., Berlin
)
,
Peter Uwer
(
- Humboldt U., Berlin
)

Dec 12, 2017

67 pages

Published in:

JHEP 05 (2018) 141

Published: May 23, 2018

e-Print:

1712.04527 [hep-ph]

DOI:

10.1007/JHEP05(2018)141

Report number:

HU-EP-17-28

View in:

ADS Abstract Service

reference search29 citations

Citations per year

Abstract: (Springer)

Recently, a general algorithm to extend the Matrix Element Method (MEM) by taking into account next-to-leading-order (NLO) corrections in quantum chromodynamics (QCD) has been presented. In this article, the algorithm is applied to the most general case that coloured partons are encountered in the initial as well as the final state. This represents a substantial extension compared to previous work. As a concrete example, the production of single top quarks at the LHC is studied. We present in detail the generation of unweighted events following the NLO predictions. By treating these events as the result of a toy experiment, we show the first proof-of-principle application of the Matrix Element Method at NLO QCD for hadronic jet production. As an illustration, we study the determination of the top-quark mass. We find that — apart from elevating the powerful MEM to a sound theoretical foundation at NLO — the inclusion of the NLO corrections can lead to sizeable effects compared to the Matrix Element Method relying on leading-order predictions only. Furthermore, we find that the incorporation of the NLO corrections is mandatory to obtain reliable estimates of the theoretical uncertainties. In addition, this work shows that measuring the top-quark mass using the MEM in single top-quark production offers an interesting alternative to mass measurements in top-quark pair production.

Note:

references and clarifications added, typos corrected, matches published version

NLO Computations
QCD Phenomenology
quantum chromodynamics: perturbation theory: higher-order
quantum chromodynamics: correction
correction: higher-order
higher-order: 1
CERN LHC Coll
p p: scattering
top: single production
top: mass

References(49)

Figures(0)

[1]

Dynamical Likelihood Method for Reconstruction of Events With Missing Momentum. 1: Method and Toy Models

K. Kondo
(
- Tsukuba U.
)

- J.Phys.Soc.Jap. 57 (1988) 4126-4140
•
DOI:
- 10.1143/JPSJ.57.4126

[2]

Dynamical likelihood method for reconstruction of events with missing momentum. 2: Mass spectra for 2 ---> 2 processes

K. Kondo
(
- Tsukuba U.
)

- J.Phys.Soc.Jap. 60 (1991) 836-844
•
DOI:
- 10.1143/JPSJ.60.836

[3]

Measurement of the Top Quark Mass in the Dilepton Channel

D0

Collaboration

•

B. Abbott
(
- New York U.
)

et al.

- Phys.Rev.D 60 (1999) 052001
•
e-Print:
- hep-ex/9808029
•
DOI:
- 10.1103/PhysRevD.60.052001

[4]

A precision measurement of the mass of the top quark

D0

Collaboration

•

V.M. Abazov
(
- Dubna, JINR
)

et al.

- Nature 429 (2004) 638-642
•
e-Print:
- hep-ex/0406031
•
DOI:
- 10.1038/nature02589

[5]

Top quark mass measurement from dilepton events at CDF II with the matrix-element method

CDF

Collaboration

•

A. Abulencia
(
- Illinois U., Urbana
)

et al.

- Phys.Rev.D 74 (2006) 032009
•
e-Print:
- hep-ex/0605118
•
DOI:
- 10.1103/PhysRevD.74.032009

[6]

The Matrix Element Method and its Application in Measurements of the Top Quark Mass

Frank Fiedler
(
- Mainz U.
)
,
Alexander Grohsjean
(
- DAPNIA, Saclay
)
,
Petra Haefner
(
- Munich, Max Planck Inst.
)
,
Philipp Schieferdecker
(
- KIT, Karlsruhe
)

- Nucl.Instrum.Meth.A 624 (2010) 203-218
•
e-Print:
- 1003.1316
•
DOI:
- 10.1016/j.nima.2010.09.024

[7]

Single top-quark production at the Tevatron and the LHC

- Rev.Mod.Phys. 90 (2018) 3, 035001
•
e-Print:
- 1710.10699
•
DOI:
- 10.1103/RevModPhys.90.035001

[8]

Searching for processes with invisible particles using a matrix element-based method

- Phys.Lett.B 787 (2018) 100-104
•
e-Print:
- 1712.03266
•
DOI:
- 10.1016/j.physletb.2018.10.044

[9]

Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques

Andrei V. Gritsan
(
- Johns Hopkins U.
)
,
Raoul Röntsch
(
- KIT, Karlsruhe
)
,
Markus Schulze
(
- CERN
)
,
Meng Xiao
(
- Johns Hopkins U.
)

- Phys.Rev.D 94 (2016) 5, 055023
•
e-Print:
- 1606.03107
•
DOI:
- 10.1103/PhysRevD.94.055023

[10]

Measuring the Higgs-bottom coupling in weak boson fusion

Christoph Englert
(
- Glasgow U.
)
,
Olivier Mattelaer
(
- Durham U., IPPP
)
,
Michael Spannowsky
(
- Durham U., IPPP
)

- Phys.Lett.B 756 (2016) 103-108
•
e-Print:
- 1512.03429
•
DOI:
- 10.1016/j.physletb.2016.02.074

[11]

Evidence for single top-quark production in the $s$ -channel in proton-proton collisions at $\sqrt{s}=$ 8 TeV with the ATLAS detector using the Matrix Element Method

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Lett.B 756 (2016) 228-246
•
e-Print:
- 1511.05980
•
DOI:
- 10.1016/j.physletb.2016.03.017

[12]

The Matrix Element Method and QCD Radiation

J. Alwall
(
- Taiwan, Natl. Taiwan U. and
- NCTS, Taipei
)
,
A. Freitas
(
- Pittsburgh U.
)
,
O. Mattelaer
(
- Louvain U., CP3
)

- Phys.Rev.D 83 (2011) 074010
•
e-Print:
- 1010.2263
•
DOI:
- 10.1103/PhysRevD.83.074010

[13]

Finding physics signals with event deconstruction

Davison E. Soper
(
- Oregon U.
)
,
Michael Spannowsky
(
- Durham U., IPPP and
- Durham U.
)

- Phys.Rev.D 89 (2014) 9, 094005
•
e-Print:
- 1402.1189
•
DOI:
- 10.1103/PhysRevD.89.094005

[14]

The Matrix Element Method at Next-to-Leading Order

- JHEP 11 (2012) 043
•
e-Print:
- 1204.4424
•
DOI:
- 10.1007/JHEP11(2012)043

[15]

Finding the Higgs Boson in Decays to $Z \gamma$ using the Matrix Element Method at Next-to-Leading Order

- Phys.Rev.D 87 (2013) 7, 073005
•
e-Print:
- 1301.7086
•
DOI:
- 10.1103/PhysRevD.87.073005

[16]

Event-by-Event Weighting at Next-to-Leading Order

- PoS RADCOR2013 (2013) 037
•
e-Print:
- 1311.5811
•
DOI:
- 10.22323/1.197.0037

[17]

Extending the Matrix Element Method beyond the Born approximation: Calculating event weights at next-to-leading order accuracy

Till Martini
(
- Humboldt U., Berlin
)
,
Peter Uwer
(
- Humboldt U., Berlin
)

- JHEP 09 (2015) 083
•
e-Print:
- 1506.08798
•
DOI:
- 10.1007/JHEP09(2015)083

[18]

Matrix element method at next-to-leading order for arbitrary jet algorithms

- Phys.Rev.D 95 (2017) 3, 036019
•
e-Print:
- 1612.07252
•
DOI:
- 10.1103/PhysRevD.95.036019

[19]

Measurement of the Single-Top-Quark $t$ -Channel Cross Section in $pp$ Collisions at $\sqrt{s}=7$ TeV

CMS

Collaboration

•

Serguei Chatrchyan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 12 (2012) 035
•
e-Print:
- 1209.4533
•
DOI:
- 10.1007/JHEP12(2012)035

[20]

Comprehensive measurements of $t$ -channel single top-quark production cross sections at $\sqrt{s} = 7$ TeV with the ATLAS detector

ATLAS

Collaboration

•

Georges Aad
(
- Marseille, CPPM
)

et al.

- Phys.Rev.D 90 (2014) 11, 112006
•
e-Print:
- 1406.7844
•
DOI:
- 10.1103/PhysRevD.90.112006

[21]

Measurement of the t-channel single-top-quark production cross section and of the $\mid V_{tb} \mid$ CKM matrix element in pp collisions at $\sqrt{s}$ = 8 TeV

CMS

Collaboration

•

Vardan Khachatryan
(
- Yerevan Phys. Inst.
)

et al.

- JHEP 06 (2014) 090
•
e-Print:
- 1403.7366
•
DOI:
- 10.1007/JHEP06(2014)090

[22]

Measurement of the Inclusive and Fiducial Cross-Section of Single Top-Quark $t$ -Channel Events in $pp$ Collisions at $\sqrt{s}$ = 8 TeV

ATLAS

Collaboration

[23]

Cross section measurement of $t$ -channel single top quark production in pp collisions at $\sqrt s =$ 13 TeV

CMS

Collaboration

•

Albert M Sirunyan
(
- Yerevan Phys. Inst.
)

et al.

- Phys.Lett.B 772 (2017) 752-776
•
e-Print:
- 1610.00678
•
DOI:
- 10.1016/j.physletb.2017.07.047

[24]

Measurement of the inclusive cross-sections of single top-quark and top-antiquark $t$ -channel production in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector

ATLAS

Collaboration

•

Morad Aaboud
(
- Oujda U.
)

et al.

- JHEP 04 (2017) 086
•
e-Print:
- 1609.03920
•
DOI:
- 10.1007/JHEP04(2017)086

[25]

Fiducial t channel single top-quark cross section at 8 TeV

CMS

Collaboration

1-25 of 49
1
2
25 / page