Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector
Aaboud, M ; Aad, G ; Abbott, B. ; Abdinov, O ; Abeloos, B ; Abidi, S. H. ; Åkesson, Torsten LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
and Hedberg, Vincent
LU
, et al.
(2017)
In European Physical Journal C
77(11).
- Abstract
- This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2fb - 1 of s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a... (More)
- This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2fb - 1 of s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of mtpole=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources. © 2017, CERN for the benefit of the ATLAS collaboration. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/cb71764e-aeda-4f8a-b4da-870354874b37
- author
- Aaboud, M
; Aad, G
; Abbott, B.
; Abdinov, O
; Abeloos, B
; Abidi, S. H.
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
and Hedberg, Vincent
LU
, et al. (More)
- Aaboud, M
; Aad, G
; Abbott, B.
; Abdinov, O
; Abeloos, B
; Abidi, S. H.
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Kalderon, Charles
LU
; Kellermann, Edgar
LU
; Konya, Balazs
LU
; Lytken, Else
LU
; Mankinen, Katja
LU
; Mjörnmark, Ulf
LU
; Pöttgen, Ruth
LU
; Poulsen, Trine
LU
; Smirnova, Oxana
LU
and Viazlo, Oleksandr
LU
(Less)
- author collaboration
- organization
- publishing date
- 2017
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 77
- issue
- 11
- article number
- 804
- publisher
- Springer
- external identifiers
-
- scopus:85036663423
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-017-5349-9
- language
- English
- LU publication?
- yes
- additional info
- Export Date: 2 January 2018
- id
- cb71764e-aeda-4f8a-b4da-870354874b37
- date added to LUP
- 2018-01-02 09:47:38
- date last changed
- 2023-04-08 04:48:12
@article{cb71764e-aeda-4f8a-b4da-870354874b37,
abstract = {{This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2fb - 1 of s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of mtpole=173.2±0.9±0.8±1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources. © 2017, CERN for the benefit of the ATLAS collaboration.}},
author = {{Aaboud, M and Aad, G and Abbott, B. and Abdinov, O and Abeloos, B and Abidi, S. H. and Åkesson, Torsten and Bocchetta, Simona and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Mjörnmark, Ulf and Pöttgen, Ruth and Poulsen, Trine and Smirnova, Oxana and Viazlo, Oleksandr}},
issn = {{1434-6044}},
language = {{eng}},
number = {{11}},
publisher = {{Springer}},
series = {{European Physical Journal C}},
title = {{Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector}},
url = {{http://dx.doi.org/10.1140/epjc/s10052-017-5349-9}},
doi = {{10.1140/epjc/s10052-017-5349-9}},
volume = {{77}},
year = {{2017}},
}