Low-momentum K/π identification for τ/c factories

1.

Low-momentum K/π identification
for τ/c factories

2.

fTOF Detector for HIEPA
Time-of-Flight Cherenkov detector:
3-4σ K/π and K/p separation up to 2 GeV/c
Quartz Cherenkov radiators conduct light to the photodetector using total
internal reflection
TOF detector from SuperB project in Italy was taken as a base

3.

DIRC-like TOF for SuperB project
SuperB detector
design
TOF endcap ring (beam
view)
DIRC-like TOF detector was designed
for PID in forward region for a project of
SuperB experiment.
(beam
view)PMT
Trapeze sector with 14 MCP
(side
view)

4.

Time-Of-Flight Technique
• Time of flight for distance L,
momentum p and mass m:
• The difference in time of
flight (K /π):
/c
Particles’ time-of-flight as function of
momentum for different particles (L = 130 cm)

5.

Likelihood based particle selector
In Likelihood based selector we construct out