Hi all, at the below you can an update of the numbers with the extra cut,
brecoqual;
http://www.slac.stanford.edu/~clarke1/protected/presentation/WA_brecoBkg_nevent.sxc
OR
http://www.slac.stanford.edu/~clarke1/protected/presentation/WA_brecoBkg_nevent.pdf
. As you can see the brecoqual cut has an effect on the vcb component such
that for charged and neutral Bs it is the same. However the vub components
for charged and neutral Bs still differs. We know that we select the
charged Bs with a greater efficiency than that of the neutral Bs and so
given the above numbers I don't think there is a trivial way of
getting around this.
Cheers, C.C.
On Thu, 9 Mar 2006, CHUKWUDI KWEKU CLARKE wrote:
> The difference between sheet 1 and 2 is that in sheet 1 along with the
> Semileptonic cuts (SL) and the signal cuts (Nu) you have an additional cut
> that selects either just the vub or vcb component of the number of events. In
> sheet 2 there is no such selection cut and so you have the complete number of
> events. In other words the vub vcb and other components.
> I hope that clears things up.
> Cheers, C.C.
>
> On Thu, 9 Mar 2006, Heiko Lacker wrote:
>
>> Hi Chukwudi,
>>
>> Just to be sure: do these numbers contain the brecoqual cut?
>> And also sorry to ask maybe this question again:
>> What is the exact difference between sheet 1 and 2?
>>
>> In BAD540 on page 71. I find:
>> B+- B0 ratio
>> Nu 126 76 1.66
>>
>> compared to your numbers for mes>5.27:
>> Nu 383 238 1.61
>>
>> It is not clear to me how to compare the other numbers directly.
>>
>> Cheers,
>> Heiko
>>
>> On Wed, 8 Mar 2006, CHUKWUDI KWEKU CLARKE wrote:
>>
>>> Here is the numbers for the charged lepton pcms >2.3GeV. In other words in
>>> the expected region for Weak Annihilations.
>>>
>>> http://www.slac.stanford.edu/~clarke1/protected/presentation/
>>> Its the WA_Bkgxpec_nevent.sxc file
>>>
>>> Cheers, C.C.
>>>
>>>> On Tue, 7 Mar 2006, Roberto Sacco wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> you can see a quick update on my mES studies in
>>>>> http://www.slac.stanford.edu/~sacco/mesfits/mesfits.html
>>>>>
>>>>> All the best,
>>>>>
>>>>> Roberto
>>>>>
>>>>
>>>
>>
>
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