Re: [Brahms-dev-l] spectra from pp collsion at eta = 2.2

I believe the tracking efficiency applied is wrong. It shouldn't be 100%
efficient for p>6 GeV/c. Any idea how to correct the tracking efficiency?
Has anybody done some estimates for d-Au and pp? Please, help me!!!

Best regards,
Zhongbao
--------
On Fri, 12 Dec 2003, Ian Bearden wrote:

> HI Ramiro, Zhongbao,
> Thanks for the plots.
> I have a bit of difficulty judging the quality/consistency of these two 
> results on the scale shown.
> Can one of you make a figure showing the ratio of the two results on a 
> linear scale? Maybe it is best to compare each of them to Hijing so we 
> can see where they are different.  Also, how is it that the statistics 
> are so different? I guess ZBY has more by more than an order of 
> magnitued, can that be right??  And...why is the ZBY result so much 
> nicer at low pt?  Is this because ZBY uses different acceptance maps? 
> (have I understood correctly that ZBY uses the "old" maps for Au+Au, 
> and if they really are only based on geometry why should there be a 
> difference?)
> Cheers,
> Ian
> 
> On 11/12-2003, at 16.47, Ramiro Debbe wrote:
> 
> > Zhongbao,
> > Here is the plot where I include your results:
> >
> > <pp12WithZhongbao.gif>
> >
> > Let me say it again, as we are working on the same spectra we should
> > compare our methods in great detail.
> >
> > Ramiro
> >
> > On Thursday, December 11, 2003, at 10:24 AM, yin.zhongbao@fi.uib.no 
> > wrote:
> >
> >> On Thu, 11 Dec 2003, Ramiro Debbe wrote:
> >>
> >>> Sorry, I rushed to reply and forgot to be more specific.
> >>> The blue stars are hijing min bias (I'm working on a better 
> >>> simulation
> >>> that includes the condition that INEL counters should be hit at least
> >>> once on each side)
> >>> The red squares are the result of what I call version 1, and finally
> >>> the black triangles are the latest results that I fit to the power 
> >>> law.
> >>>
> >>> We are "frantically" studying our method to extract the pt
> >>> distributions, and I would be very curious to see how do you handle 
> >>> the
> >>> fact that the INEL resolution for the z coordinate of the vertex is
> >>> poor (~5cm). Maybe we should have a phone conversation.
> >>
> >> I haven't thought about that. From your plots, it seems HIJING 
> >> decribes
> >> our data. Then I would leave it as it is since there are many things
> >> waiting for me to work on.
> >>
> >> Best regards,
> >> Zhongbao
> >> -----------------------------------------------------
> >> Zhongbao YIN                 Phone:  +47-55-582792 (O)
> >> Address:                             +47-55-276803 (H)
> >>   Fantoftveien 14G 466       E-mail:
> >>   5075  Bergen                  Yin.Zhongbao@fi.uib.no
> >> ------------------------------------------------------
> >>
> > _______________________________________________
> > Brahms-dev-l mailing list
> > Brahms-dev-l@lists.bnl.gov
> > http://lists.bnl.gov/mailman/listinfo/brahms-dev-l
> 
> 

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


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