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SUMMARY:Study on transverse Momentum Resolution of SPD Straw Tracker in hi
 gh multiplicity ion-ion collisions
DTSTART;VALUE=DATE-TIME:20261027T162500Z
DTEND;VALUE=DATE-TIME:20261027T163000Z
DTSTAMP;VALUE=DATE-TIME:20261027T142622Z
UID:indico-contribution-6450@cern.ch
DESCRIPTION:Speakers: Arina Lazareva ()\nThe performance of the Straw Trac
 ker (ST) is one of the key factors determining the momentum resolution of 
 the Spin Physics Detector (SPD) at the NICA collider. The quality of charg
 ed-particle track reconstruction depends not only on the detector geometry
  and event multiplicity but also on the parameters of the track-finding an
 d track-fitting algorithms.\n\nThis work focuses on track reconstruction i
 n the SPD ST and its impact on the relative transverse momentum resolution
  for different charged-track multiplicities. Monte Carlo simulations are u
 sed to reconstruct charged-particle trajectories in various light-to-moder
 ate ion-ion collisions. Reconstructed tracks are matched to Monte Carlo 
 “true tracks” via the fraction of common detector hits\, which allows 
 one to correctly account for mixed and incorrectly reconstructed track can
 didates. The transverse momentum resolution is studied using the relative 
 residual\, evaluated in different transverse-momentum intervals for differ
 ent colliding ion species. Wrong hit associations with tracks at high mult
 iplicities result in notable tails in the relative resolution. The choice 
 of an appropriate fit function is also discussed.\n\nhttps://indico.partic
 le.mephi.ru/event/626/contributions/6450/
LOCATION:Sevastopol hotel Conference Hall 1
URL:https://indico.particle.mephi.ru/event/626/contributions/6450/
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