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Vub measurement using recoil of fully reconstructed Bs

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Subject:
From:
Daniele del Re <[log in to unmask]>
Date:
03 Jul 2002 23:14:32 -0700 (PDT)Wed, 03 Jul 2002 23:14:32 -0700 (PDT)
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Here the comparison Q0-Q1

All:
----

Q0    http://www.slac.stanford.edu/~daniele/vub/brecoall.eps

Q1    http://www.slac.stanford.edu/~daniele/vub/brecoallch101.eps


B0:
---

Q0    http://www.slac.stanford.edu/~daniele/vub/brecob0.eps

Q1    http://www.slac.stanford.edu/~daniele/vub/brecob0ch101.eps


Bch:
----

Q0    http://www.slac.stanford.edu/~daniele/vub/brecobch.eps

Q1    http://www.slac.stanford.edu/~daniele/vub/brecobchch101.eps



As you see, the two selections have the same pattern. The effect seems to
be a bit worse in Q1 (probably due to the larger fraction of background).
Then I think that the Q0-Q1 difference cannot be caused only by something
related with the breco side.

 Daniele



On Wed, 3 Jul 2002, Daniele del Re wrote:

>
> Hi all,
>
>  I repeated the study vs the integrated purity.
>
>  ALL:
>  ---
>
>  http://www.slac.stanford.edu/~daniele/vub/brecoall.eps
>
>   - pretty nice
>
>
>  B0:
>  --
>
>  http://www.slac.stanford.edu/~daniele/vub/brecob0.eps
>
>  - the value increases a lot around 50%. Then it goes down again at high
> purity. ~ 3-4 sigmas effect
>
>
>  Bch:
>  ---
>
>  http://www.slac.stanford.edu/~daniele/vub/brecobch.eps
>
>  - fine, I could say
>
>
>  I am doing the same plots for the Q1 cut.
>
>  Daniele
>
>
>
>
>
>





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