Hello. Since the tile's gain has been changed from the last year, I am not using tile to obtain the minimum bias events although tile is our best minimum bias detector because of its large phase space coverage. Therefore, I am using the silicon alone to "guesstimate" our minimum bias. This is very tricky because I do not know how much of the minimum events the silcon detector really sees, and the silicon detectors has the problem in the very lower end of multiplicity because of nonliearity in PTQ (peak streacher). (Of cause, this could be avoided if we had peak sensing adc. hint-hint) Other than I am using silicon alone, I am using the same technique described in the mult paper. (Basicly, I throw out the low mult events, and count the number of events above the certain threathold mult value. And, I add the estimated low mult from simulation to get the total counts. Once I know the total, I sliced the events by silicon multiplicity for silicon and by bb mult for bb.) Anyway, at this moment, it is my best "GUESSTIMATE". hiro On Sun, 26 Aug 2001, Ian Bearden wrote: > Thanks for the beautiful figure! > I'm not sure I understood from your mail...are these preliminary results? > :-) > One question: how do estimate the centrality? > Thanks again, > Ian > > -----Original Message----- > > From: owner-brahms-l@bnl.gov [mailto:owner-brahms-l@bnl.gov]On Behalf Of > > Hironori Ito > > Sent: Sunday, August 26, 2001 4:21 AM > > To: brahms-l@bnl.gov > > Subject: very preliminary brahms dndeta with model prediction > > > > > > Hello. Because some people requested to produce our dndeta figure > > with a model prediction by Kharzeev and Levin, I made it, and put on the > > web. It is located in > > "http://pii3.brahms.bnl.gov/~hito/run2001". They are called > > dndeta_200.eps, dndeta_200.gif, dndeta_200.ps for whatever the format > > people want. Also, if you know how to use ROOT and change the > > color, size > > and anything else in the figure, there is a macro called > > dndeta_200_aug25.C to plot the figure. (.L dndeta_200_aug25.C and > > plot() in ROOT) HOWEVER, please keep in mind, this figure shows very > > very very ------ very preliminary analysis of our data. Si, Tile and BB > > analysis needs a lot of refinement. (Tile is not even used in the > > figure.) Therefore, be very cautious using this figure in your talk and > > know the current analysis limitation. ( Tile is not used, vertex > > location, background estimate, energy calibration etc...) > > > > Hiro > > > > > > > > > > > >
This archive was generated by hypermail 2b30 : Sun Aug 26 2001 - 03:58:10 EDT