Author:
Xin Shuiting,Zhao Guang,Wu Linghui,Dong Mingyi,Li Gang,Sun Shengsen,Lou Xinchou
Abstract
Abstract
The particle identification of charged hadrons, especially
for the separation of K and π, is crucial for the flavour
physics study. Ionization measurement with the cluster counting
technique, which has a much less fluctuation than traditional
dE/dx measurement, is expected to provide better particle
identification for the BESIII experiment. Simulation studies,
including a Garfield++ based waveform analysis and a performance
study of K/π identification in the BESIII offline software
system have been performed. The results show that K/π separation
power and PID efficiency would be improved appreciably in the
momentum range above 1.2 GeV/c using cluster counting technique
even with a conservative resolution assumption.
Subject
Mathematical Physics,Instrumentation