Proton dEdx width expansion

1
Proton dE/dx width expansion

• After 5 constant correction for HERA-II,
  comparing distribution of p band D(dE/dx) between
  HERA-I and HERA-II.
• Compare ratio of D(dE/dx) s.

0.6GeV
1.0GeV
2.0GeV

• dE/dx is expanded, both of positive and negative
  proton about 25.

Positive (p)
Negative (anti-p)