[g13] theta-phi distributions

[slava at jlab.org]

Dear all,

When plotting theta-phi distributions for individual particles (p/pi-/pi+)
identified via timing cut, I consistently get a strong shift of events
towards negative local phi in sector 4 (it's visible in sector 3 as well,
but not as pronounced) for all 3 of them. I am attaching theta-phi
distribution along with phi projections (split in theta) for those curious
(it is sector 4, do not be alarmed by the file name). Does anybody have an
idea on what is going on?

Best regards,
Slava
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