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Vub measurement using recoil of fully reconstructed Bs

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Subject:
From:
Urs Langenegger <[log in to unmask]>
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Date:
21 Jun 2002 14:13:18 -0700 (PDT)Fri, 21 Jun 2002 14:13:18 -0700 (PDT)
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Hoi,

1. MM scans as a function of the Mx cut:

Mx cut   <BRBR> e-4  Plot
----------------------------------------------------------------------
1.45     148+/-11    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.45-stability.eps
1.50     146+/-10    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.50-stability.eps
1.55     157+/-10    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.55-stability.eps
1.60     187+/-11    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.60-stability.eps
1.65     187+/-11    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.65-stability.eps
1.70     181+/-11    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.70-stability.eps
1.75     186+/-12    http://www.slac.stanford.edu/~ursl/talks/062102/MM-1.75-stability.eps

The error quoted on <BRBR> is the error of a fit with a constant,
indicated on the plots with a yellow band. 

For the remaining scans, the Mx cut was set to 1.55 GeV. 


2. Scan over p*:  http://www.slac.stanford.edu/~ursl/talks/062102/P-stability.eps
I am confused as to why lowering the p* cut does not propagate into
the fit. Need to look more closely. 

3. Scan over Mx:  http://www.slac.stanford.edu/~ursl/talks/062102/Q-stability.eps
The categories are: 

 1 Q = 0 (default)
 2 Q = -1, 0
 3 Q = 0, +1 
 4 Q = -1, 0, +1 

Cheers,
--U.



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