Hi Vera,
> Thanks Daniele,
> this confirms what Urs had shown before.
> I did not find the table you referred to. Can
> you please specify this more clearly?
I added the plots with the old selection in the same page
http://www.slac.stanford.edu/~daniele/vub/GTVL_AS.html
so it is easier to be compared.
>
> Also, did you include the smearing of tracks and neutrals
> foe SP3 and SP4 as we discussed yesterday?
I have included all the possibile smearings, except the SP3 neutral
smearing (the kaon PID killing is also in).
Daniele
> Thanks
> Vera
>
> ---------------------------------------------------------------------
> Vera G. Luth phone: 650 926 2702
> SLAC-MS 95 fax: 650 926 2657
> Stanford, CA 94309
> USA e-mail: [log in to unmask]
> ---------------------------------------------------------------------
>
> -----Original Message-----
> From: Del Re, Daniele
> Sent: Friday, June 07, 2002 11:28 AM
> To: vub-recoil
> Subject: GTVL track selection plots
>
>
>
> Hi all,
>
> I produced the comparison plots for the new track selection
>
> you find the results in the page:
>
> http://www.slac.stanford.edu/~daniele/vub/GTVL_AS.html
>
> and you can compare with the table in the page
>
> http://www.slac.stanford.edu/~daniele/vub/disagree.html
>
> for the old selection (sometimes the chisquare could be screwed up
> because of bad mes fit with low stat)
>
> My comments are:
>
> - improvement in N charged and Qtot
> - small improvement in mm2
> - nneu same level of disagreement (expected)
> - improvement in mxhad
> - mxhadfit: same level of comparison
>
> my final comment is that selection seems to be fine and actually
> can improve the result. I am not sure that we are using the right
> tables for the kinematic fit now. If not, results will be better in
> the future once we will plug in the right tables.
>
> I have another comment:
>
> actually in the generic MC we don't have the same ratio Bch/B0
> (2 for generic MC and 1.7 for data). This for sure affects the
> Ncharged, qtot and Mx distributions. I will redo the comparison
> with the right balance.
>
> Daniele
>
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