Hi Ian, 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? Because, correcting for efficiency rises the spectra up. I've just sent to Zhongbao the efficiency calculations from October for the selected d+Au and pp runs - I guess, the same corrections (if any) are used by Ramiro. Regards Pawel. > 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 >> ------------------------------------------------------ >> > > > _______________________________________________ > Brahms-dev-l mailing list > Brahms-dev-l@lists.bnl.gov > http://lists.bnl.gov/mailman/listinfo/brahms-dev-l > _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l@lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Fri Dec 12 06:14:59 2003
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