Hi Peter,
On Wed, 12 Jun 2002, Peter Christiansen wrote:
> I am trying to redo the spectra analysis in the MRS and wanted to know
> what other people had. The analysis still needs a few checks and I think
> the values are a bit low to what I have seen before so some numbers would
> be great :
> 5% (Christian module) central trigger 6 (-15 < vtx < 15) mass**2 pid cut.
> Corrections : simple pi decay, simple K decay (will put in new corrections
> from Eun-Joo)
> (SAMPLE : 90 1000B)
Yield T
> pi+ : 226 +- 5 218 +- 5
> pi- : 215 +- 5 222 +- 5
> K+ : 39 +- 3 280 +- 25
> K- : 36 +- 3 270 +- 25
> p : 22 +- 2 340 +- 30
> pbar : 16 +- 2 370 +- 40
Here are the corresponding dN/dy at y=0, 130 GeV numbers from PHENIX, 5% central,
which probably should be multiplied by approx. 1.14 (?) to extrapolate to 200 GeV:
pi+ : 276 +- 3
pi- : 270 +- 3
K+ : 47 +- 2
K- : 41 +- 2
p : 29 +- 1
pbar : 20 +- 1
so it seems that we're indeed a bit low ...
Cheers,
Trine
This archive was generated by hypermail 2b30 : Wed Jun 12 2002 - 12:07:24 EDT