VUB-RECOIL Archives

Vub measurement using recoil of fully reconstructed Bs

VUB-RECOIL@LISTSERV.SLAC.STANFORD.EDU

Options: Use Forum View

Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Urs Langenegger <[log in to unmask]>
Reply To:
Date:
01 Jul 2002 15:49:20 -0700 (PDT)Mon, 01 Jul 2002 15:49:20 -0700 (PDT)
Content-Type:
TEXT/PLAIN
Parts/Attachments:
TEXT/PLAIN (64 lines)

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.



ATOM RSS1 RSS2