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Abstract:

A likelihood-based discriminant for the identification of quark- and gluon-initiated jets is built and validated using 4.7 fb(Formula presented.) of proton–proton collision data at (Formula presented.) collected with the ATLAS detector at the LHC. Data samples with enriched quark or gluon content are used in the construction and validation of templates of jet properties that are the input to the likelihood-based discriminant. The discriminating power of the jet tagger is established in both data and Monte Carlo samples within a systematic uncertainty of (Formula presented.) 10–20 %. In data, light-quark jets can be tagged with an efficiency of (Formula presented.) while achieving a gluon-jet mis-tag rate of (Formula presented.) in a (Formula presented.) range between (Formula presented.) and (Formula presented.) for jets in the acceptance of the tracker. The rejection of gluon-jets found in the data is significantly below what is attainable using a Pythia 6 Monte Carlo simulation, where gluon-jet mis-tag rates of 10 % can be reached for a 50 % selection efficiency of light-quark jets using the same jet properties. © 2014, The Author(s).

Registro:

Documento: Artículo
Título:Light-quark and gluon jet discrimination in pp collisions at √s=7 TeV with the ATLAS detector
Autor:Aad, G. et al.
Este artículo contiene 2880 autores, consultelos en el artículo en formato pdf.
Filiación: Este artículo contiene 2880 autores con sus filiaciones, consultelas en el artículo en formato pdf.
Año:2014
Volumen:74
Número:8
Página de inicio:1
Página de fin:29
DOI: http://dx.doi.org/10.1140/epjc/s10052-014-3023-z
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v74_n8_p1_Aad

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Citas:

---------- APA ----------
(2014) . Light-quark and gluon jet discrimination in pp collisions at √s=7 TeV with the ATLAS detector. European Physical Journal C, 74(8), 1-29.
http://dx.doi.org/10.1140/epjc/s10052-014-3023-z
---------- CHICAGO ----------
Aad, G. "Light-quark and gluon jet discrimination in pp collisions at √s=7 TeV with the ATLAS detector" . European Physical Journal C 74, no. 8 (2014) : 1-29.
http://dx.doi.org/10.1140/epjc/s10052-014-3023-z
---------- MLA ----------
Aad, G. "Light-quark and gluon jet discrimination in pp collisions at √s=7 TeV with the ATLAS detector" . European Physical Journal C, vol. 74, no. 8, 2014, pp. 1-29.
http://dx.doi.org/10.1140/epjc/s10052-014-3023-z
---------- VANCOUVER ----------
Aad, G. Light-quark and gluon jet discrimination in pp collisions at √s=7 TeV with the ATLAS detector. Eur. Phys. J. C. 2014;74(8):1-29.
http://dx.doi.org/10.1140/epjc/s10052-014-3023-z