another strategy

more direct: detect charged tracks, look for energy in EM calorimeter above minimum-ionizing peak to reduce background from conversion electrons, demand that the RICH not fire
pros: very clean signal, closely related to technique used to ID high pT pions
cons: introduces EM calorimeter cut which may vary with pT, especially for p andp

more direct: detect charged tracks, look for energy in EM calorimeter above minimum-ionizing peak to reduce background from conversion electrons, demand that the RICH not fire