Hi Urs,
how tough it is to do this with the uncorrlated error (which I am afraid
it must be just the difference in quadrature of the errors?)
ciao
ric
On Mon, 1 Jul 2002, Urs Langenegger wrote:
>
> Hoi,
>
> in the following are a few links to scans for B, B0 and B+. I use the
> HEAD of IslBrecoilUser (with 'mixcorr 2', which I presume is the new
> way). Furthermore, I fit with the files contained in inputfiles.dat
> (in /nfs/farm/babar/AWG7/ISL/tmp/rootfitfiles/lastfiles/.).
>
> By default, I get
>
> B BRBR = 0.0180181 +- 0.00430567(stat) +- 0.00123682(MC stat)
> B0 BRBR = 0.00404501 +- 0.00715335(stat) +- 0.00210959(MC stat)
> B+ BRBR = 0.0277028 +- 0.00544833(stat) +- 0.00179499(MC stat)
>
> which is a bit different from this morning's talk.
> ~ursl/root/ballfit/BALLMX_1.55-MM_0.500.blog is the logfile for this
> default. Daniele, do you have a logfile against which I can diff? I'd
> be interested how the difference comes about.
>
>
> MX scan
> -------
> B http://www.slac.stanford.edu/~ursl/talks/070102/BALLMX-stability.eps
> B0 http://www.slac.stanford.edu/~ursl/talks/070102/BNUMX-stability.eps
> B+ http://www.slac.stanford.edu/~ursl/talks/070102/BCHMX-stability.eps
>
> The total is remarkably stable, but B0 and B+ are anti-correlated
> (nothing new).
>
>
> MM2 scan
> --------
> B http://www.slac.stanford.edu/~ursl/talks/070102/BALLMM-stability.eps
> B0 http://www.slac.stanford.edu/~ursl/talks/070102/BNUMM-stability.eps
> B+ http://www.slac.stanford.edu/~ursl/talks/070102/BCHMM-stability.eps
>
> We have a stunning stability of the (B0) result when loosening the cut
> on mm2.
>
>
> P scan
> -------
> B http://www.slac.stanford.edu/~ursl/talks/070102/BALLP-stability.eps
> B0 http://www.slac.stanford.edu/~ursl/talks/070102/BNUP-stability.eps
> B+ http://www.slac.stanford.edu/~ursl/talks/070102/BCHP-stability.eps
>
> The sum has been more stable previously, the fluctuations are driven
> by B+. The B0 result is perfectly stable raising the p* cut to 1.7
> GeV.
>
> Q = -1 .. +1
> ------------
> B BRBR = 0.0235617 +- 0.00463323(stat) +- 0.0012843(MC stat)
> B0 BRBR = 0.0134943 +- 0.00717454(stat) +- 0.00206(MC stat)
> B+ BRBR = 0.0350774 +- 0.00628954(stat) +- 0.0020162(MC stat)
>
> The instability does not improve compared to the default setting.
>
>
> Cheers,
> --U.
>
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