On 12/12-2003, at 18.18, Pawel Staszel wrote: > 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? You are both right, Pawel and Zhongbao. One day I will learn not to send any email before my second cup of coffee. -Ian > > 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 07:13:48 2003
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