this bug applies to all (8 or 9) muonidentification algorithms.

the muonbuildertool attribute 'infiniteeloss' is set to 7 tev. this may appear large but the isacceptable check fails any muon component (muon or particle) with measured momentum above this value (i.e. only a partially reconstructed muon, or even no muon at all, is recorded to aod). in particular the fitted covariance is not taken into account, so the measured momentum of kinematically-allowed high energy muons passes the cut-off more frequently than one might expect. i suggest either to raise this limit by an order of magnitude (a configuration change) or to take into account the fitted momentum error (nicer but will require a branch tag).

from the warning messages in fixed-pt single-muon simulation i estimate this causes an inefficiency ~10^-3 at 100 gev rising to ~6% at pt = 500gev. most of these losses are either at high eta where the id resolution is poor or for 2-station ms tracks at any eta. nevertheless we should strive to keep correctly-reconstructed extreme-momentum tracks even with a somewhat imprecise measurement. any such cases in the forthcoming data are going to be rare - we can afford to study them individually with vp1 etc rather than possibly biasing the physics signal. 