[Clas12_verystrange] Resolved Omega- issue

[Derek Glazier]

Hi Mike,
    The consistency is good now at least. And if you detect the K- too 
the situation is actually quite promising as the background seems to be 
entirely suppressed by a vertex cut.
Cheers
Derek

On 02/24/12 19:42, Michael Dugger wrote:
>
> Hi,
>
> I have now found the answer to my original question as to whether my 
> Omega plot looked reasonable.
>
> The problem: The cross section weighting for the Omega- was too large 
> when I simply scaled the neutral cascade cross section by 1/10. The 
> effective cross section I reported earlier was measured after the 
> detection efficiency, so it was just dumb luck that the effective 
> cross section ended up near the value that we wanted BEFORE the 
> simulated detector response.
>
> I put in 0.3 nb for the Omega- cross section (as Igor requested) and 
> got the plot attached (OmegaMNew.gif).
>
> The bad news: The Omega- signal I get is consistent with Derek's and 
> is a sad little guy :(
>
> Take care,
> Michael
>
>
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