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Description
  • 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 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) > 0.9GeV is 94% for pseudorapidities of vertical bar eta vertical bar < 0.9 and 85% for 0.9 < vertical bar eta vertical bar < 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 < 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.
  • 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 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) > 0.9GeV is 94% for pseudorapidities of vertical bar eta vertical bar < 0.9 and 85% for 0.9 < vertical bar eta vertical bar < 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 < 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)
Title
  • Description and performance of track and primary-vertex reconstruction with the CMS tracker
  • Description and performance of track and primary-vertex reconstruction with the CMS tracker (en)
skos:prefLabel
  • Description and performance of track and primary-vertex reconstruction with the CMS tracker
  • Description and performance of track and primary-vertex reconstruction with the CMS tracker (en)
skos:notation
  • RIV/00216208:11320/14:10284885!RIV15-MSM-11320___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(LG13031)
http://linked.open...iv/cisloPeriodika
  • P10009
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 10359
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11320/14:10284885
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Performance of High Energy Physics Detectors; Large detector-systems performance; calibration and fitting methods; cluster finding; Pattern recognition; cms (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [7D235AFFB87F]
http://linked.open...i/riv/nazevZdroje
  • Journal of Instrumentation
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 9
http://linked.open...iv/tvurceVysledku
  • Adam, W.
  • Chatrchyan, S.
  • Finger, Michael
  • Finger, Miroslav
  • Khachatryan, V.
  • Bergauer, T.
  • Dragicevic, M.
  • Eroe, J.
  • Fabjan, C.
  • Friedl, M.
  • Fruehwirth, R.
  • Ghete, V. M.
  • Sirunyan, A. M.
  • Tumasyan, A.
  • Hartl, C.
http://linked.open...ain/vavai/riv/wos
  • 000345858500052
issn
  • 1748-0221
number of pages
http://bibframe.org/vocab/doi
  • 10.1088/1748-0221/9/10/P10009
http://localhost/t...ganizacniJednotka
  • 11320
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