# Instrumentation for Colliding Beam Physics (INSTR-17)

from 27 February 2017 to 3 March 2017
Budker Institute of Nuclear Physics
Asia/Novosibirsk timezone
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# Contribution Poster

Budker Institute of Nuclear Physics
Particle identification

# First using of the particle identification system based on dense aerogel in data analysis of the e+e- -> K+K- process

## Speakers

• Mr. Konstantin BELOBORODOV

## Content

The threshold Čerenkov counter based on dense aerogel with refraction index $n=$1.13 is described. This counter is used for $pi/K$ separation at SND detector at VEPP-2000 $e^+e^-$ collider in the particle energy range up to 1 GeV. The results on separation efficiency for hadrons produced in $e^+e^-$ annihilation are presented. New results on the $e^+e^-to K^+K^-$ process cross section has been obtained in the energy range $1.05div 2.0$ GeV with using the Čerenkov counters. The cross section value was found to be consistent with previous measurements.