Dear Hiro,
the BBC efficency is probably highly
multiplicity dependent. Could you just produce a
multiplicity spectrum for the tiles/silicon.
This probably has a dip at low multiplicity.
However it would be very interesting to see what
are the highest multiplicities you observe.
Another approach is to calculate the average
dN/dEta for the 100 highest multplicity events.
Then you don't have to worry about any efficences.
Yours Michael
Quoting Hironori Ito <hito@students.phsx.ukans.edu>:
> Hello. For appetizer of some people, dndeta for 0-5 % central
> 22 Gev run is about 200 at eta=0 by silicon and tile. A normalization
> is
> done using Hijing to estimate BB counter (trigger 1) efficiency. (We
> know it is way model dependent.) The number (200) seems to be too
> low. Unless someone comes up with better (or right) normalization, this
> is
> it for 22 Gev run.
>
> Hiro
>
Michael Murray, Cyclotron TAMU, 979 845 1411 x 273, Fax 1899
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