Instrumentation for Colliding Beam Physics (INSTR-17)

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

28 Feb 2017, 17:00

1h

Budker Institute of Nuclear Physics

Board: 29

Poster Particle identification Posters

Speaker

Mr Konstantin Beloborodov (BINP)

Description

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 $1.05\div 2.0$ GeV with using the Čerenkov counters. The cross section value was found to be consistent with previous measurements.