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Pregled bibliografske jedinice broj: 738833

Description and performance of track and primary-vertex reconstruction with the CMS tracker


Chatrchyan, S.; ...; Pleština, Roko; ...; Godinović, Nikola; Lelas, Damir; Pleština, Roko; Polić, Dunja; Puljak, Ivica; Antunović, Željko et al.
Description and performance of track and primary-vertex reconstruction with the CMS tracker // Journal of Instrumentation, 9 (2014), P10009 -1 doi:10.1088/1748-0221/9/10/P10009 (međunarodna recenzija, članak, znanstveni)


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Naslov
Description and performance of track and primary-vertex reconstruction with the CMS tracker

Autori
Chatrchyan, S. ; ... ; Pleština, Roko ; ... ; Godinović, Nikola ; Lelas, Damir ; Pleština, Roko ; Polić, Dunja ; Puljak, Ivica ; Antunović, Željko ; Kovač, Marko ; Brigljević, Vuko ; Đurić, Senka ; Kadija, Krešo ; Luetić, Jelena ; Mekterović, Darko ; Morović, Srećko ; Sudic, Lucija ; ... ; Đurić, Senka ; ... ; Woods, N.

Izvornik
Journal of Instrumentation (1748-0221) 9 (2014); P10009 -1

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Pattern recognition; cluster finding; calibration and fitting methods; Large detectorsystems performance; Performance of High Energy Physics Detectors

Sažetak
A 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 primaryinteraction vertices. Despite the very hostile environment at the LHC, the performance obtained with these algorithms is found to be excellent. For tt events under typical 2011 pileup conditions, the average track-reconstruction efficiency for promptly-produced charged particles with transverse momenta of pT > 0.9GeV is 94% for pseudorapidities of |η| < 0.9 and 85% for 0.9 < | η| < 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 pT = 100GeV emitted at |η| < 1.4, the resolutions are approximately 2.8% in pT, and respectively, 10µm and 30µm in the transverse and longitudinal impact parameters. The position resolution achieved for reconstructed primary vertices that correspond to interesting pp collisions is 10–12µm 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.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
The CMS Collaboration.



POVEZANOST RADA


Projekt / tema
023-0982887-3064 - Potraga za Higgsovim bozonom i novom fizikom detektorom CMS (Ivica Puljak, )
098-0982887-2878 - Eksperimentalna fizika na LHC energijama (Krešo Kadija, )

Ustanove
Fakultet elektrotehnike, strojarstva i brodogradnje, Split,
Institut "Ruđer Bošković", Zagreb,
Sveučilište u Splitu

Citiraj ovu publikaciju

Chatrchyan, S.; ...; Pleština, Roko; ...; Godinović, Nikola; Lelas, Damir; Pleština, Roko; Polić, Dunja; Puljak, Ivica; Antunović, Željko et al.
Description and performance of track and primary-vertex reconstruction with the CMS tracker // Journal of Instrumentation, 9 (2014), P10009 -1 doi:10.1088/1748-0221/9/10/P10009 (međunarodna recenzija, članak, znanstveni)
Chatrchyan, S., ..., Pleština, R., ..., Godinović, N., Lelas, D., Pleština, R., Polić, D., Puljak, I. & Antunović, Ž. (2014) Description and performance of track and primary-vertex reconstruction with the CMS tracker. Journal of Instrumentation, 9, P10009 -1 doi:10.1088/1748-0221/9/10/P10009.
@article{article, year = {2014}, pages = {P10009 -1-P10009 -80}, DOI = {10.1088/1748-0221/9/10/P10009}, keywords = {Pattern recognition, cluster finding, calibration and fitting methods, Large detectorsystems performance, Performance of High Energy Physics Detectors}, journal = {Journal of Instrumentation}, doi = {10.1088/1748-0221/9/10/P10009}, volume = {9}, issn = {1748-0221}, title = {Description and performance of track and primary-vertex reconstruction with the CMS tracker}, keyword = {Pattern recognition, cluster finding, calibration and fitting methods, Large detectorsystems performance, Performance of High Energy Physics Detectors} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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