Let's again find a particle, this time the D zero. It decays into a kaon and a pion. It's mass is a little bit higher than 1.8 GeV.
In this form you should try
to find it by optimizing the DE/DX identifcation cuts.
Beginner's Guide
Page 4
A particle with a certain mass and momentum has not only a fixed speed, but also a fixed and predictable energy loss in a gas like that used in the drift chamber. Since this energy is converted into ionized atoms and eventually in a charge pulse on a signal wire, you get information about the lost energy.
A special device, called ADC, can digitze the amplitude information of the pulse on a signal wire, so that a larger number represents a larger pulse. After you calibrated the ADC system. you can find different pulse heights for different particles.
Like in the measurement of the speed of a particle, you calculate the difference of your measurement to a hypothesis, like ``This particle is a pion'', and weigh it by the expected resolution of this value. This means, you now have six more particle ID values: SGELDI, SGMUDI, SGPIDI, SGKADI, and SGPRDI, in which you can cut to identify the respective particle.
The D zero particle
Let's again find a particle, this time the D zero.
It decays into a kaon and a pion.
It's mass is a little bit higher than 1.8 GeV.
In this form you should try
to find it by optimizing the DE/DX identifcation cuts.
Beginner's Guide
Page 4