Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Salvatore, F, Santoyo Castillo, I, Suruliz, K, Sutton, M R, Vivarelli, I and The ATLAS collaboration, et al (2016) Measurement of the charged-particle multiplicity inside jets from √s=8 TeV pp collisions with the ATLAS detector. European Physical Journal C, 76 (6). p. 322. ISSN 1434-6044
![]() |
PDF
- Published Version
Available under License Creative Commons Attribution. Download (2MB) |
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 pT > 500 MeV inside high-momentum jets in dijet events using 20.3 fb−1 of data recorded with the ATLAS detector in pp collisions at √s = 8 TeV collisions at the LHC. The jets considered have transverse momenta from 50 GeV up to and beyond 1.5 TeV. 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 |
---|---|
Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Subjects: | Q Science > QC Physics > QC0770 Nuclear and particle physics. Atomic energy. Radioactivity > QC0793 Elementary particle physics |
Depositing User: | Iacopo Vivarelli |
Date Deposited: | 25 Aug 2016 08:33 |
Last Modified: | 02 Jul 2019 19:37 |
URI: | http://sro.sussex.ac.uk/id/eprint/63020 |
View download statistics for this item
📧 Request an update