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 ********** email exchange 29/11 **************************************
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Hi again,
                                                                                                     
I did the cross check with only the 2M->1M and the 3M&M* still out,
and the effect from the 3M&M* is indeed
                                                                                                     
  4.8%.
                                                                                                     
The effect from 2Zt&1A&1M alone is really
                                                                                                     
  5.9% - 2.2% = 3.7%.
                                                                                                     
And these two do add up to 8.5%.
                                                                                                     
So there is a 0.3% overlap between 2Zt&1A&2M and 3M&M* (modulo
rounding errors).
                                                                                                     
FYI, the files are called:
                                                                                                     
  *stage2a  (2Zt&1A&1M, w/ 3M&M*)
  *stage2b  (2Zt&1A&1M, no 3M&M*)
  *stage2   (2Zt&1A&2M, no 3M&M*)
                                                                                                     
Cheers
-- Rainer
                                                                                                     
On Tuesday, 28 November 2006, Rainer Bartoldus wrote:
>
> Hi,
>
> As we discussed, I made a little test in which I brought back the
> 3M&M* line and also replaced the extra 2M on the 2Zt&1A line with a
> 1M, making it 2Zt&1A&1M as in the today's Run 5 configuration.
>
> I put all plots into the meeting directory:
>
>   /afs/slac.stanford.edu/g/babar/www/Detector/Trigger/2006/meeting-061128/bartoldu/
>
> As Su Dong alluded to, removing the 3M&M* goes a long way rate-wise:
>
> The total effect from the above changes is that it brings
>
>    16.4% - 7.9% = 8.5%
>
> of the rate back (the 'all' column).
>
> This breaks down roughly as:
>
>    5.6% - 2.2% = 3.4% from 2Zt&1A&1M
>
> plus
>
>    4.8% from 3M&M*.
>
> these don't add up to 8.5% but I think the ballpark is right.)
>
> So 3M&M* does have a comparatively big effect on the rate.
>
> -- Rainer