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@ARTICLE{Aad:634782,
author = {Aad, Georges and others},
collaboration = {{ATLAS Collaboration}},
title = {{M}easurement of the {L}und jet plane in hadronic decays of
top quarks and {W} bosons with the {ATLAS} detector},
journal = {The European physical journal / C},
volume = {85},
number = {4},
issn = {1434-6044},
address = {Heidelberg},
publisher = {Springer},
reportid = {PUBDB-2025-02606, arXiv:2407.10879. CERN-EP-2024-169},
pages = {416},
year = {2025},
note = {60 pages in total, author list starting page 42, 15
figures, 3 tables, published on EPJC. All figures including
auxiliary figures are available at
http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2020-31},
abstract = {The Lund jet plane (LJP) is measured for the first time in
$t\bar{t}$ events, using 140 $\textrm{fb}^{-1}$ of $\sqrt{s}
= 13$ TeV pp collision data collected with the ATLAS
detector at the LHC. The LJP is a two-dimensional observable
of the sub-structure of hadronic jets that acts as a proxy
for the kinematics of parton showers and hadron formation.
The observable is constructed from charged particles and is
measured for $R=1.0$ anti-$k_t$ jets with transverse
momentum above 350 GeV containing the full decay products of
either a top quark or a daughter W boson. The other top
quark in the event is identified from its decay into a
b-quark, an electron or a muon and a neutrino. The
measurement is corrected for detector effects and compared
with a range of Monte Carlo predictions sensitive to
different aspects of the hadronic decays of the heavy
particles. In the W-boson-initiated jets, all the
predictions are incompatible with the measurement. In the
top quark initiated jets, disagreement with all predictions
is observed in smaller subregions of the plane, and with a
subset of the predictions across the fiducial plane. The
measurement could be used to improve the tuning of Monte
Carlo generators, for better modelling of hadronic decays of
heavy quarks and bosons, or to improve the performance of
jet taggers.},
cin = {ATLAS},
ddc = {530},
cid = {I:(DE-H253)ATLAS-20120731},
pnm = {611 - Fundamental Particles and Forces (POF4-611) / DFG
project G:(GEPRIS)469666862 - Präzisionstests des
Standardmodells unter der Verwendung von geboosteten
W/Z-Bosonen am Large Hadron Collider (469666862) / REALDARK
- REAL-time discovery strategies for DARK matter and dark
sector signals at the ATLAS detector with Run-3 LHC data
(101002463) / DITTO - Comprehensive search for new phenomena
in the dilepton spectrum at the LHC (101089007)},
pid = {G:(DE-HGF)POF4-611 / G:(GEPRIS)469666862 /
G:(EU-Grant)101002463 / G:(EU-Grant)101089007},
experiment = {EXP:(DE-H253)LHC-Exp-ATLAS-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2407.10879},
howpublished = {arXiv:2407.10879},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2407.10879;\%\%$},
doi = {10.1140/epjc/s10052-025-13924-5},
url = {https://bib-pubdb1.desy.de/record/634782},
}