RE: [Brahms-l] BAN 50

  Hi Guys, 
    Hans Boggild made lovely fits to the full 3d spectra from the ISR. Once you have these you know everything there is to know and can transform the data to dN/dEta or
dN/dX_F. 

          Michael



-----Original Message-----
From:	brahms-l-bounces@lists.bnl.gov on behalf of Djamel Ouerdane
Sent:	Tue 5/4/2004 10:05 AM
To:	Peter H.L. Christiansen
Cc:	Brahms List
Subject:	Re: [Brahms-l] BAN 50

Ciao Peter,

> I would just make the comment that Nch ~ 4600+-400 (-4.7 < eta < 4.7) +

I know, this is why I said "a bit more if -inf < eta < +inf"

> 200? outside and Phobos says 5000+-200 for total, but we also supposedly
> have some 2-300 net-p+netK outside our acceptance...
> 
> It would be nice to put the Phobos data on the same plot if available.

I'll try.

> I think you have done a great job and it is nice to see that the data
> used to form different dN/dy points at forward rapidity in the dN/dy
> plot when related in the dN/deta (Figure 2 and Figure 15) seems to agree
> well.

yes, I was pleased to see that :)

> For figure 11 the agreement is less nice, but it loks ok, and
> anyway it is a tricky thing as you say and I guess that there is also
> not a one to one correspondance between your y-pT and eta-pT histogram.

As I mentioned to you previously, yes, the mapping is tricky and I 
introduced a small error by choosing the same binning, but I guess root 
has not yet implemented the conform transform of a binning in 2D :) 

Djam


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