@Article{ATLASCollaborationAaboud_etal2018,
author="ATLAS Collaboration (Aaboud, M. et al
and Alvarez Piqueras, D.
and Bailey, A. J.
and Barranco Navarro, L.
and Cabrera Urban, S.
and Castillo, F. L.
and Castillo Gimenez, V.
and Cerda Alberich, L.
and Costa, M. J.
and Escobar, C.
and Estrada Pastor, O.
and Ferrer, A.
and Fiorini, L.
and Fuster, J.
and Garcia, C.
and Garcia Navarro, J. E.
and Gonzalez de la Hoz, S.
and Higon-Rodriguez, E.
and Jimenez Pena, J.
and Lacasta, C.
and Lozano Bahilo, J. J.
and Madaffari, D.
and Mamuzic, J.
and Marti-Garcia, S.
and Melini, D.
and Mitsou, V. A.
and Pedraza Lopez, S.
and Rodriguez Bosca, S.
and Rodriguez Rodriguez, D.
and Salt, J.
and Soldevila, U.
and Sanchez, J.
and Valero, A.
and Valls Ferrer, J. A.
and Vos, M.",
title="Measurements of b-jet tagging efficiency with the ATLAS detector using t(t)over-bar events at root s=13 TeV",
journal="Journal of High Energy Physics",
year="2018",
publisher="Springer",
volume="08",
number="8",
pages="089--47pp",
optkeywords="Hadron-Hadron scattering (experiments)",
abstract="The efficiency to identify jets containing b-hadrons (b-jets) is measured using a high purity sample of dileptonic top quark-antiquark pairs (t (t) over bar) selected from the 36.1 fb(-1) of data collected by the ATLAS detector in 2015 and 2016 from proton-proton collisions produced by the Large Hadron Collider at a centre-of-mass energy root s = 13 TeV. Two methods are used to extract the efficiency from t (t) over bar events, a combinatorial likelihood approach and a tag-and-probe method. A boosted decision tree, not using b-tagging information, is used to select events in which two b-jets are present, which reduces the dominant uncertainty in the modelling of the flavour of the jets. The efficiency is extracted for jets in a transverse momentum range from 20 to 300 GeV, with data-to-simulation scale factors calculated by comparing the efficiency measured using collision data to that predicted by the simulation. The two methods give compatible results, and achieve a similar level of precision, measuring data-to-simulation scale factors close to unity with uncertainties ranging from 2{\%} to 12{\%} depending on the jet transverse momentum.",
optnote="WOS:000442113300001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3719), last updated on Tue, 18 Sep 2018 11:50:12 +0000",
issn="1029-8479",
doi="10.1007/JHEP08(2018)089",
opturl="http://arxiv.org/abs/1805.01845",
opturl="https://doi.org/10.1007/JHEP08(2018)089",
archivePrefix="arXiv",
eprint="1805.01845",
language="English"
}