SP3 & SP4 b0 cocktail
Alessio
______________________________________________________
Alessio Sarti
Universita' & I.N.F.N. Ferrara
tel +39-0532-781928 Ferrara
roma +39-06-49914338
SLAC +001-650-926-2972
"Vorrei tanto sapere chi e' che va in giro a costruire quadrati
sull'ipotenusa"
On Tue, 23 Apr 2002, Oliver Buchmueller wrote:
>
> Hi Alessio,
>
> which MC are you using in order to extract the BR's?
>
> Oliver
>
> On Tue, 23 Apr 2002, Alessio Sarti wrote:
>
> > Hi all,
> > I've spent all day looking for bugs in the code but I couldn't find
> > anything wrong. That's the way I'm extracting BRs:
> >
> > BR = (NcatSL)/(Nb)
> >
> > a) I calculate the number of Bs as: entries in the rootfile (Nb)
> >
> > b) I calculate NcatSL as: given a category (cat) of decay (let's say
> > B->Dlnu) I loop overall the entries and ask 1) a semileptonic decay of the
> > B, 2) a true D 3) the number of daughters of the recoil B == 3. (this
> > requirement change in the case of a radiation photon: for each true photon
> > found I increase by 1 the number of daughters requested : 1 pho -> 4
> > daughters. I've checked in the generator block that the photon is
> > associated to the B and not to the electron if the number of B
> > daughters is grater than 3)
> >
> > In this way the number obtained for the BR is still strange:
> > 2.43159 Dlnu
> > 7.33482 D*lnu
> > (discrepancies with yesterday are coming for the bug fix on counting
> > radiative photons).
> >
> > Now the disagreement factor with the PDG is not 2, but 1.7 (Dlnu) and 1.3
> > (D*lnu). I'm going to put those number in the BAD: let me know if someone
> > has a suggestion or a question or has looked into the code and has found
> > something strange.
> >
> > Cheers,
> > alessio
> >
> >
> >
> > ______________________________________________________
> > Alessio Sarti
> > Universita' & I.N.F.N. Ferrara
> > tel +39-0532-781928 Ferrara
> > roma +39-06-49914338
> > SLAC +001-650-926-2972
> >
> > "Vorrei tanto sapere chi e' che va in giro a costruire quadrati
> > sull'ipotenusa"
> >
> >
>
>
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