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Vub measurement using recoil of fully reconstructed Bs

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Subject:
From:
Antonio Petrella <[log in to unmask]>
Date:
16 May 2006 09:53:49 +0200Tue, 16 May 2006 09:53:49 +0200
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Hi,

> 
> do I understnad correctly that you treat the combinatoric BG with 
> two different distributions. I would have rather used only one 
> distribution for the Argus fit. What do the others think?
> 
yes that's what I did. I used two distributions; the one that fits non 
BBbar has values fixed on result from non BBbar MC fit only.

cheers,
   Antonio

> Cheers,
> Heiko
> 
> On Mon, 15 May 2006, Heiko Lacker wrote:
> 
>> Hi Antonio,
>>
>> could you please also post the result for the fit parameters?
>>
>> Heiko
>>
>> On Mon, 15 May 2006, Antonio Petrella wrote:
>>
>>> Hi Heiko,
>>> I've posted two fit that have converged on my page.
>>>
>>>   MC is a mixing of non BBbar and generic BBbar. Then the same code has 
>>> been used on data.
>>> Fit on MC looks very good, and also on data... we still have the some 
>>> problem on endpoint.
>>>
>>> The purple line is the Argus pdf for ccbar and uds.
>>>
>>> Bye,
>>> Antonio
>>>
>>> Heiko Lacker ha scritto:
>>>> Hi Antonio,
>>>>
>>>> On Mon, 15 May 2006, Antonio Petrella wrote:
>>>>
>>>>> Hi Heiko,
>>>>> fitting the non BBbar MC the parameter that we get for the Argus PDF
>>>>> is very similar to the BBbar MC (Argus Shape parameter is 24.89  0.37 
>>>>> now w.r.t. the other value 25.23  0.4 - see 
>>>>> http://www.slac.stanford.edu/~petrella/mesfits/mesfits.html)
>>>>>
>>>>> So it seems that this background is already described by the one Argus 
>>>>> we have been using. Is that right?
>>>> In principle, yes. Nevertheless, it would good to see the effect 
>>>> in the combination.
>>>>
>>>> Cheers,
>>>> Heiko
>>>>
>>>>> Antonio
>>>>>
>>>>> Heiko Lacker ha scritto:
>>>>>> Hi,
>>>>>>
>>>>>> any news from the fit on MC when mixing in the non-BBbar MC?
>>>>>>
>>>>>> Cheers,
>>>>>> Heiko
>>>>>>



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