Re: [Brahms-l] A new version for the paper

Dear Steve,

for the PID, the first step is throw away the overlap region, and then 
corrected for it by evaluate how much has been thrown it away. What I do 
is the flolowing: 
(i) calculate the disctance of the kaon 2sigma cut lower curve 
to the pion mass square mean value, and then (ii) divided the distance by 
the pion mass square resolution, (iii) by using the resulting value  one 
can determine how much has been threw away. I have checked if it is 
correct by comparing the yields above and bellow the pion mass square 
mean value and found that it works fine and the kaon contamination of 
pions is less than 5% at pt=3 GeV/c. 

I hope it is clear to you this time, however
I do have problem to describe it in one or two sentences, 
could you help me to word it nicely? Than you  very much for your
kind help.

Best regards,
Zhongbao
----------
On Fri, 1 Jul 2005, Stephen Sanders wrote:

> Hi Zhongbao:  Thanks for the changes.
> I am still confused, however, by the discussion on how you handle
> the yields above the point where the 2 sig PID ranges overlap.
> 
> What you say in the paper is that you throw away the pion and proton
> yields that fall in the overlap regions, without further correction.
> This obviously yields a systematic
> under-accounting of these yields.  Consider pi/k separation,
> since the overall kaon yields are less
> than the pion yields, wouldn't you get an answer closer to the
> "truth" by INCLUDING the overlap region?, although now quoting
> too large rather than too small a yield?
> 
> ...steve
> 
> 
> On Jul 1, 2005, at 5:35 AM, yin.zhongbao@ift.uib.no wrote:
> 
> > Dear All,
> >
> > sorry to interrup you again because we had a new version for the paper.
> > Many thanks to steve this time.
> > The new version  is still located at
> > http://www.ift.uib.no/~yin/hptPiAndProton_v6.pdf
> > http://www.ift.uib.no/~yin/hptPiAndProton_v6.ps
> >
> > Could you send your comments and suggestions ASAP? I do
> > want to finish it so that I have complete peace of mind to work
> > on something else.
> >
> > Thank you very much for your kind help.
> >
> > Best regards,
> > Zhongbao
> >
> > -- 
> > -----------------------------------------------------
> > Zhongbao YIN                 Phone:  +47-55-582792 (O)
> > Address:                             +47-55-276803 (H)
> >   Fantoftveien 14G 466       E-mail:
> >   P.B. 694, 5075 Bergen        Yin.Zhongbao@ift.uib.no
> > ------------------------------------------------------
> >
> >
> > _______________________________________________
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> > Brahms-l@lists.bnl.gov
> > http://lists.bnl.gov/mailman/listinfo/brahms-l
> 
> 

-- 
-----------------------------------------------------
Zhongbao YIN                 Phone:  +47-55-582792 (O)
Address:                             +47-55-276803 (H)
  Fantoftveien 14G 466       E-mail:
  P.B. 694, 5075 Bergen        Yin.Zhongbao@ift.uib.no
------------------------------------------------------


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