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Article
Report number arXiv:1609.04305 ; CERN-EP-2016-137 ; CERN-EP-2016-137
Title A measurement of material in the ATLAS tracker using secondary hadronic interactions in 7 TeV pp collisions
Related titleA measurement of material in the ATLAS tracker using secondary hadronic interactions in 7 TeV pp collisions
Author(s) ATLAS Collaboration  Показване на всичките 2859 автора
Publication 2016-11-30
Imprint 14 Sep 2016
Number of pages 45
Note 28 pages plus author list + cover pages (45 pages total),14 figures, 8 tables, submitted to Journal of Instrum., All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/PERF-2015-06/
In: JINST 11 (2016) P11020
DOI 10.1088/1748-0221/11/11/P11020
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords detector ; tracker ; experimental results
Abstract Knowledge of the material in the ATLAS inner tracking detector is crucial in understanding the reconstruction of charged-particle tracks, the performance of algorithms that identify jets containing \emph{b}-hadrons and is also essential to reduce background in searches for exotic particles that can decay within the inner detector volume. Interactions of primary hadrons produced in \emph{pp} collisions with the material in the inner detector are used to map the location and amount of this material. The hadronic interactions of primary particles may result in secondary vertices, which in this analysis are reconstructed by an inclusive vertex-finding algorithm. Data were collected using minimum-bias triggers by the ATLAS detector operating at the LHC during 2010 at centre-of-mass energy s = 7 TeV, and correspond to an integrated luminosity of 19 nb1. Kinematic properties of these secondary vertices are used to study the validity of the modelling of hadronic interactions in simulation. Secondary-vertex yields are compared between data and simulation over a volume of about 0.7 m3 around the interaction point, and agreement is found within overall uncertainties.
Copyright/License preprint: © 2016-2024 CERN (License: CC-BY-4.0)
publication: © 2016-2024 CERN (License: CC-BY-3.0)



Corresponding record in: Inspire
Email contact: fmalek@lpsc.in2p3.fr


 Записът е създаден на 2016-09-14, последна промяна на 2024-04-20


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