¥What can cause this asymmetry?
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¥It is not the magnetic field.
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¥It is not the floor.
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¥It is not the software.
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¥It is not the calculated time delay (this
effect the position of the vertex distribution for a specific counter
combination, not the width).
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¥At the moment, we have no clear indication what effect
is responsible for the observed asymmetry. Monte-Carlo studied are in progress to see if this effect is
also present in the simulated data.
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