Measurement of jet activity in top quark events using the eμ final state with two b-tagged jets in pp collisions at √s=8 TeV with the ATLAS detector. / The ATLAS collaboration.

In: Journal of High Energy Physics, Vol. 2016, 74, 13.09.2016, p. 1-62.

Research output: Contribution to journalArticlepeer-review

Published

Standard

Measurement of jet activity in top quark events using the eμ final state with two b-tagged jets in pp collisions at √s=8 TeV with the ATLAS detector. / The ATLAS collaboration.

In: Journal of High Energy Physics, Vol. 2016, 74, 13.09.2016, p. 1-62.

Research output: Contribution to journalArticlepeer-review

Harvard

APA

Vancouver

Author

BibTeX

@article{64565fe5a5bf44f39c9e27c04f60d61e,
title = "Measurement of jet activity in top quark events using the eμ final state with two b-tagged jets in pp collisions at √s=8 TeV with the ATLAS detector",
abstract = "Measurements of the jet activity in tt¯tt¯ events produced in proton-proton collisions at s√=8s=8 TeV are presented, using 20.3 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. The events were selected in the dilepton eμ decay channel with two identified b-jets. The numbers of additional jets for various jet transverse momentum (pT) thresholds, and the normalised differential cross-sections as a function of pT for the five highest-pT additional jets, were measured in the jet pseudo-rapidity range |η| < 4.5. The gap fraction, the fraction of events which do not contain an additional jet in a central rapidity region, was measured for several rapidity intervals as a function of the minimum pT of a single jet or the scalar sum of pT of all additional jets. These fractions were also measured in different intervals of the invariant mass of the eμbb¯¯eμbb¯ system. All measurements were corrected for detector effects, and found to be mostly well-described by predictions from next-to-leading-order and leading-order tt¯tt¯ event generators with appropriate parameter choices. The results can be used to further optimise the parameters used in such generators.",
author = "{The ATLAS collaboration}",
year = "2016",
month = sep,
day = "13",
doi = "10.1007/JHEP09(2016)074",
language = "English",
volume = "2016",
pages = "1--62",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer Verlag",

}

RIS

TY - JOUR

T1 - Measurement of jet activity in top quark events using the eμ final state with two b-tagged jets in pp collisions at √s=8 TeV with the ATLAS detector

AU - The ATLAS collaboration

PY - 2016/9/13

Y1 - 2016/9/13

N2 - Measurements of the jet activity in tt¯tt¯ events produced in proton-proton collisions at s√=8s=8 TeV are presented, using 20.3 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. The events were selected in the dilepton eμ decay channel with two identified b-jets. The numbers of additional jets for various jet transverse momentum (pT) thresholds, and the normalised differential cross-sections as a function of pT for the five highest-pT additional jets, were measured in the jet pseudo-rapidity range |η| < 4.5. The gap fraction, the fraction of events which do not contain an additional jet in a central rapidity region, was measured for several rapidity intervals as a function of the minimum pT of a single jet or the scalar sum of pT of all additional jets. These fractions were also measured in different intervals of the invariant mass of the eμbb¯¯eμbb¯ system. All measurements were corrected for detector effects, and found to be mostly well-described by predictions from next-to-leading-order and leading-order tt¯tt¯ event generators with appropriate parameter choices. The results can be used to further optimise the parameters used in such generators.

AB - Measurements of the jet activity in tt¯tt¯ events produced in proton-proton collisions at s√=8s=8 TeV are presented, using 20.3 fb−1 of data collected by the ATLAS experiment at the Large Hadron Collider. The events were selected in the dilepton eμ decay channel with two identified b-jets. The numbers of additional jets for various jet transverse momentum (pT) thresholds, and the normalised differential cross-sections as a function of pT for the five highest-pT additional jets, were measured in the jet pseudo-rapidity range |η| < 4.5. The gap fraction, the fraction of events which do not contain an additional jet in a central rapidity region, was measured for several rapidity intervals as a function of the minimum pT of a single jet or the scalar sum of pT of all additional jets. These fractions were also measured in different intervals of the invariant mass of the eμbb¯¯eμbb¯ system. All measurements were corrected for detector effects, and found to be mostly well-described by predictions from next-to-leading-order and leading-order tt¯tt¯ event generators with appropriate parameter choices. The results can be used to further optimise the parameters used in such generators.

U2 - 10.1007/JHEP09(2016)074

DO - 10.1007/JHEP09(2016)074

M3 - Article

VL - 2016

SP - 1

EP - 62

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

M1 - 74

ER -