Measurement of the charged-particle multiplicity inside jets from root s=8 TeV pp collisions with the ATLAS detector



Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Aben, R, Abolins, M, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2858 more authors) (2016) Measurement of the charged-particle multiplicity inside jets from root s=8 TeV pp collisions with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 76 (6). 322-.

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Abstract

The number of charged particles inside jets is a widely used discriminant for identifying the quark or gluon nature of the initiating parton and is sensitive to both the perturbative and non-perturbative components of fragmentation. This paper presents a measurement of the average number of charged particles with [Formula: see text] [Formula: see text] inside high-momentum jets in dijet events using 20.3 fb[Formula: see text] of data recorded with the ATLAS detector in <i>pp</i> collisions at [Formula: see text] [Formula: see text] collisions at the LHC. The jets considered have transverse momenta from 50 [Formula: see text] up to and beyond 1.5 [Formula: see text]. The reconstructed charged-particle track multiplicity distribution is unfolded to remove distortions from detector effects and the resulting charged-particle multiplicity is compared to several models. Furthermore, quark and gluon jet fractions are used to extract the average charged-particle multiplicity for quark and gluon jets separately.

Item Type: Article
Additional Information: 17 pages plus author list + cover page (35 pages total), 5 figures, 2 tables. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-12/
Uncontrolled Keywords: Atlas Collaboration, Atlas Collaboration, Atlas Collaboration
Depositing User: Symplectic Admin
Date Deposited: 21 Feb 2017 14:39
Last Modified: 19 Jan 2023 07:17
DOI: 10.1140/epjc/s10052-016-4126-5
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3005944