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Hello,

I've been calculating the momentum parameters separately offline and
comparing them to what we get with just the invariant mass from recon.

Does anyone know exactly what B-field value is being used? I see the call
in TrackUtils:
public static Hep3Vector getBField(Detector detector) {
        return detector.getFieldMap().getField(new BasicHep3Vector(0., 0.,
500.0));
    }

So I assume this is the field value at the middle, but I wanted to check.
Also do we expect this value to be the same as the one we obtained in mya?
Does anyone know anything about this? I've been using 0.239T, but I get
something slightly different (~1 MeV on invariant mass).

Thanks,
Holly

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