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SUMMARY:Identification of high-energy antiprotons on electrons background 
 based on calorimeter data in PAMELA experiment
DTSTART;VALUE=DATE-TIME:20161010T131500Z
DTEND;VALUE=DATE-TIME:20161010T133000Z
DTSTAMP;VALUE=DATE-TIME:20260714T034313Z
UID:indico-contribution-517@cern.ch
DESCRIPTION:Speakers: Olga Dunaeva (Aleksandrovna)\nIn modern experimental
  physics a heterogeneous coordinate-sensitive calorimeters are widely used
  due to their good characteristics and possibilities to obtain a three-dim
 ensional information of particles interactions. Espesially it is important
  at high-energies when electromagnetic or hadronic showers are arise. We p
 ropose a quit efficient method to identify antiprotons (positrons) with en
 ergies more than 10 GeV on electron (proton) background by calorimeter of 
 such kind. We construct the AdaBoost classifier to separate particles into
  two classes\, different combinations of energy release along reconstructe
 d particle trajectorywere used as feature vector. We test\na preliminary v
 erson of the method on a calorimeter of the PAMELA magnetic spectrometer. 
 For high-energy particles we got a good quality of classification: it lost
  only $4*10^{-4}$ of antiprotons\, while less than $10^{-3}$ of electrons 
 were classified to antiproton class.\n\nhttps://indico.particle.mephi.ru/e
 vent/4/contributions/517/
LOCATION:Milan Hotel Verdi
URL:https://indico.particle.mephi.ru/event/4/contributions/517/
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