A third particle from the same collision leaves this pattern
PHYSICS · Subjective · Fermi University Physics · Electronics, Instrumentation & Communication · Sensors, detectors and experimental instrumentation · Sensors, detectors and experimental instrumentation
Particle Physics, Ch Detectors, event reconstruction and claiming a discovery
Problem
A third particle from the same collision leaves this pattern. (a) A track in the tracker curving to a momentum of 25GeV/c. (b) A small energy deposit in the electromagnetic calorimeter, well under a GeV, as expected from a minimum-ionising loss of about 1 to 2MeVcm2g−1 across the calorimeter's material, far below 25GeV. (c) A similarly small, minimum-ionising deposit in the hadronic calorimeter, with no shower. (d) A hit in the muon chambers, in line with the track. Identify the particle and explain each signal.