Blake,
That plot is very interesting.  The correlation between the two 
difference observables is about 80%, which is very high.  I cannot think 
right away of a mechanism for this strong correlation, can you?  The two 
share the same tagger information, but that should not be dominant 
enough to explain a 80% corrrelation factor
Richard J.
Blake Leverington wrote:
> Hi Richard,
>
> Thanks for the comments. I guess I was confused about the sqrt part. 
> And it would be less confusing for others to just quote a t_tagger 
> time as opposed to -tphoton. I attached a plot of 
> (tn8+ts8)/2+tphoton:(tn7+ts7)/2+tphoton. You can see there is a 
> correlation though I don't think I would call it a strong correlation. 
> What do you think?
>
> -Blake
>
smime.p7s