Hi Ian, I get tracking efficiency from Pawel's file for AuAu run, in order to use his file I assume centrality value is 60%, that is the most peripheral events in his file. Then it turns out the efficiency to be 100% for p>6GeV/c. If, let's say, tracking efficiency is 80% or less, this certainly will increase the yield because you will divide the spectra by 0.8. Cheers, Zhongbao ------- On Fri, 12 Dec 2003, Ian Bearden wrote: > Hi Zhongbao, > I guess this confuses me even more. You are right, the eff. should not > be 100% above 6GeV/c (is this really in p, or pt?) > In the first approximation, I would guess that the tracking eff. is > roughly constant with p, but I don't know the value > for p+p or d+Au off the top of my head. I think that the eff. should > be better for these systems than Au+Au, but I don't know if anyone has > actually worked on it. > Still, how can you have an eff. of 100% and still be lower at high pt > than RD? is this due to binning, or are your spectra really very > different. It would really be helpful to see a comparison on a > reasonable scale. > Cheers, > Ian > On 12/12-2003, at 11.36, yin.zhongbao@fi.uib.no wrote: > > > > > 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 > > ------------------------------------------------------ > > > > -- ----------------------------------------------------- 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-lReceived on Fri Dec 12 06:13:11 2003
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