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SUMMARY:Removal of secondary particle contribution from moments of particl
 e distributions with Identity Method
DTSTART;VALUE=DATE-TIME:20201005T164500Z
DTEND;VALUE=DATE-TIME:20201005T170000Z
DTSTAMP;VALUE=DATE-TIME:20260515T134326Z
UID:indico-contribution-2333@cern.ch
DESCRIPTION:Speakers: Vitalii Petrov (Saint Petersburg University)\nThe Id
 entity Method (IM) is a mathematical tool that allows one to solve the pro
 blem of misidentification in the analysis of moments of particle distribut
 ions. This method was successfully used for corrections of the first and s
 econd moments in NA61/SHINE and ALICE experimental data. In this work\, it
  is shown how the Identity Method could be used in a non-standard way\, na
 mely\, for correction of the second moments on contamination by secondary 
 particles coming from weak decays and detector material.  For that\, distr
 ibutions of a distance of the closest approach (DCA) of the tracks to the 
 primary vertex are utilized. Thereby\, fluctuations and correlations of pr
 imary particles can be accessed. Such a correction is essential when there
  is no inner tracker in an experiment and\, therefore\, a fraction of the 
 secondary particles\, which pass the selection criteria\, is large. In par
 ticular\, this is relevant for the 1st phase of the MPD experiment. The pe
 rformance of the method is demonstrated with the realistic events generate
 d in Monte-Carlo models with the detector response simulated in GEANT.\nTh
 is work is supported by RFBR research project No. 18-02-40097.\n\nhttps://
 indico.particle.mephi.ru/event/35/contributions/2333/
LOCATION:Discord Poster Server
URL:https://indico.particle.mephi.ru/event/35/contributions/2333/
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