identifiedparticle
An identified particle is a particle whose species has been determined by detector-based particle identification (PID). In high-energy collisions and fixed-target experiments, many particles are produced, but only some can be unambiguously labeled as electrons, muons, pions, kaons, or protons based on measurement.
PID relies on several observables. Specific energy loss (dE/dx) in tracking detectors helps separate species at
In analysis, information from multiple subsystems is combined into likelihood or Bayesian probabilities for particle species.
Identified particles enable spectroscopy, yield measurements, and studies of hadronization and collective behavior in heavy-ion collisions.
Experiments with extensive PID capabilities include large collider detectors and flavor factories such as those at