Re: [BLAST_ANAWARE] cc_eff2.C updated in phase2

From: zhangchi (zhangchi@general.lns.mit.edu)
Date: Tue Nov 05 2002 - 20:46:54 EST


Hi,

I am using cuts on eep ntuple. the cuts in cc_eff2.C are combination of
plnn/prnn in Cuts.C which are ep cuts on ep elastic events. They should be
more restrictive than the ones you listed below so limit the denominators
more. The numerators are simply denominator plus a fire in correspondant
CC.

I have been busy dealing with a bad disk on my computer. A few blocks
in my /usr and my home dir corrupted. The machine can barely boot into
single user mode. Data must be backed up, and after that I need to send it
to IBM for replacement. I am sorry, but getting my computer up and working
again became my priority so I did not have chance to work on CC efficiency
again.

I ll be at BATES whole day tommorrow and on shifts Thursday to Sunday, I
ll work on the codes again.

Chi

On Mon, 4 Nov 2002, Tancredi Botto wrote:

>
> Chi, the connection should be back on.
>
> I am surprised by these "bad" results. Also, why don't you
> use cuts on the eep ntuple. All we need is to put (hardcoding is fine
> in this case as this will never really change) and few good ep
> combinations. I'll give the ones that worked for me (there is no company
> secret)
>
> LC0 : (ntr=13 & 0 < ntl < 3 & ncr = -1 ) & atr> 8000
> RC0 : (ntl=13 & 0 < ntr < 3 & ncl = -1 ) & atl> 8000
>
> LC1 : (ntl=5 & 10 < ntr < 13 & ncr = -1 & ncl = -1 or 1) & atr > 8000
> RC1 : same as above, mutatis mutandis
>
> the proton cut (adc >8000) may vary (we may change that online)
>
> for RC2 I had (ntl = 8or9, & ncl=-1 & ntr = 9or10) & atl > 8000
>
> you should get close to the CC efficiency shown at the collab meeting,
> attahced in .ps as a function of the proton ADC cut
>
>
> -- t
> ________________________________________________________________________________
> Tancredi Botto, phone: +1-617-253-9204 mobile: +1-978-490-4124
> research scientist MIT/Bates, 21 Manning Av Middleton MA, 01949
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
> On Mon, 4 Nov 2002, zhangchi wrote:
>
> >
> > Hi, all, as requested by Tancredi, I finished (at least I hope) cc_eff2.C
> > some one started but left unfinished.
> >
> > Unfortunately, I just lost connection to blast02/05 from campus so can not
> > finish the test of codes. The code was run on 2508 which is the latest
> > eep in root_ntuple directory.
> >
> > Cuts used are combinations of plnn/prnn from Cuts.C. You can see the code for
> > cuts imposed. The running gets painfully slow because of the long cuts.
> >
> > The numbers for efficiencies are suprisinly low, 30% for left box 0, so I
> > think some cuts need to be adjusted. but I can not do it without a
> > connection to Bates.
> >
> > Chi
> >
>



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