I beg to differ.
First of all what do you mean "not valid". Secondly what is this cut
(I>75), if it is a beam current than I don't think you are doing
yourself a favor in making this cut. Also, if the cuts are invalid than
the result should bear this out. As of now you are cutting out about a
quarter of all events but excluding those runs. I still state that
cerenkov do improve the result imensely (dil. of about 0.17), until
proven otherwise.
Cheers, Vitaliy
Wang Xu wrote:
>In Ben's previous email, He gave a summary of asy results with respect to
>different cuts.
>The conclusion we drawn from the results is that Cerekov cuts reduced a
> large amount of background. However after I checked asy. run by run. I
>realized the Cerekov cuts was not valid during run 2306-2343.The new
>results (excluded run 2306-2343) are:
>with Cerekov Cuts(I>75) left right
>dilution(Pb*Pt):(asymwccut2.ps) 0.10 0.12
>without Cerekov Cuts(I>75) left right
>dilution(Pb*Pt):(asymwccut2.ps) 0.12 0.10.
>Therefore the Cerekov cuts did not change Asy significantly. Overall Pb*Pt
>is about 0.11.
> Best regards,
> Wang
>
>
>
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