Adrian,
What you are referring to is probably due to a bad wire chamber box,
such as L14 right now. I should not, however, effect a spin asymmetry
to a large degree, that we see in tensor. The biggest mistery is
reconciling tensor and vector results.
Vitaliy
Adrian T Sindile wrote:
>Hi, Richard, Vitaliy!
>I have been analyzing polarized H2 runs from December - I am also seeing
>problems on the electron-left side. This might have nothing to do with the
>recent D2 runs, but I thought I would mention it since you asked.
>
>Please take a look at the attached plot (please ignore poor binning and
>the X axis error bars, this is an older plot I happened to have around).
>>From my plot, we can see an acceptance gap on the electron-left side
>(the two upper plots are theta distribution, different colors for
>different helicities).
>
>I took great care at selecting ep events from about 300 runs - this is
>not perfect, but I am now 90% sure the problem is real.
>I do not know if this is relevant... but if we have a detector problem,
>that might also play into D2 analysis.
>
>Adrian
>
>-------------------------------
>Adrian Sindile
>Research Assistant
>Nuclear Physics Group
>University of New Hampshire
>phone: (603)862-1691
>FAX: (603)862-2998
>email: asindile@alberti.unh.edu
>http://einstein.unh.edu/~adrian/
>
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