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dc.creatorChatrchyan, S.
dc.creatorAdžić, Petar
dc.creatorĐorđević, Miloš
dc.creatorEkmedzic, M.
dc.creatorMilošević, Jovan
dc.creatorMilenović, Predrag
dc.creatorRekovic, V.
dc.date.accessioned2018-03-01T15:36:45Z
dc.date.available2018-03-01T15:36:45Z
dc.date.issued2014
dc.identifier.issn1748-0221 (print)
dc.identifier.urihttp://vinar.vin.bg.ac.rs/handle/123456789/253
dc.description.abstractA description is provided of the software algorithms developed for the CMS tracker both for reconstructing charged-particle trajectories in proton-proton interactions and for using the resulting tracks to estimate the positions of the LHC luminous region and individual primary-interaction vertices. Despite the very hostile environment at the LHC, the performance obtained with these algorithms is found to be excellent. For t (t) over bar events under typical 2011 pileup conditions, the average track-reconstruction efficiency for promptly-produced charged particles with transverse momenta of p(T) GT 0.9GeV is 94% for pseudorapidities of vertical bar eta vertical bar LT 0.9 and 85% for 0.9 LT vertical bar eta vertical bar LT 2.5. The inefficiency is caused mainly by hadrons that undergo nuclear interactions in the tracker material. For isolated muons, the corresponding efficiencies are essentially 100%. For isolated muons of p(T) = 100GeV emitted at vertical bar eta vertical bar LT 1.4, the resolutions are approximately 2.8% in p(T), and respectively, 10 m m and 30 mu m in the transverse and longitudinal impact parameters. The position resolution achieved for reconstructed primary vertices that correspond to interesting pp collisions is 10-12 mu m in each of the three spatial dimensions. The tracking and vertexing software is fast and flexible, and easily adaptable to other functions, such as fast tracking for the trigger, or dedicated tracking for electrons that takes into account bremsstrahlung.en
dc.relationScience and Technology Facilities Council [CMS]
dc.rightsopenAccessen
dc.sourceJournal of Instrumentationen
dc.subjectPattern recognition, cluster finding, calibration and fitting methodsen
dc.subjectLarge detector-systems performanceen
dc.subjectPerformance of High Energy Physics Detectorsen
dc.titleDescription and performance of track and primary-vertex reconstruction with the CMS trackeren
dc.typearticleen
dcterms.abstractМиленовић Предраг; Милошевић Јован; Екмедзиц, М.; Цхатрцхyан, С.; Aдзиц, П.; Ђорђевић Милош; Рековиц, В.;
dc.citation.volume9
dc.identifier.wos000345858500052
dc.identifier.doi10.1088/1748-0221/9/10/P10009
dc.citation.otherArticle Number: P10009
dc.citation.rankM22
dc.contributor.countCMS Collaboration (ukupan broj autora: 2412)
dc.identifier.scopus2-s2.0-84908341975
dc.identifier.fulltexthttp://vinar.vin.bg.ac.rs//bitstream/id/12255/249.pdf


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