Hi It seems to me the problem is likely the mrs refitting was not done in the gtr's. (as I can tell from a quick look at the scripts) Luckily this can be redone in the dst's. Take a look at the ppDst for the run05 generation. You may not need all of this , but beware the bestVertex stuff (should be bb). try this for a brief run before embarking on a complete redoing. Flemming -------------------------------------------- Flemming Videbaek Physics Department Bldg 510-D Brookhaven National Laboratory Upton, NY11973 phone: 631-344-4106 cell: 631-681-1596 fax: 631-344-1334 e-mail: videbaek @ bnl gov ----- Original Message ----- From: "Bekele, Selemon" <bekeleku_at_ku.edu> To: <brahms-dev-l_at_lists.bnl.gov> Sent: Friday, January 05, 2007 1:00 PM Subject: [Brahms-dev-l] FW: MRS momentum distribution > > Hi BRAHMS, > > I am looking at the file > > /brahms/data02/data/run05/cucu/200/r12316/dst/dst012316v0p3.root > Angle 90 > Field 1050 > > Following Flemming's suggestion, I looked into the corresponding > gtr file: > =================== > /brahms/data02/data/run05/cucu/200/r12316/gtr/hist_gtr012316seq000v0p3.root > > KEY: TDirectory Tracking_MRS;1 Tracking_MRS > KEY: TH1F hMomentum;1 Accepted MRS tracks momentum > KEY: TDirectory Match_MRS;1 Match_MRS > KEY: TH1F hMatchP_MRS;1 MRS Matching P (GeV/c) > KEY: TH1F hMatchPGood_MRS;1 MRS Matching P (GeV/c) Good Tracks > ==================== > I assume that the following correspondence is true > > http://www4.rcf.bnl.gov/~tigist/MrsCheck/MRS_Accepted_P.gif <------------> MRS_fP > http://www4.rcf.bnl.gov/~tigist/MrsCheck/MRS_Matching_PGoodTracks.gif <------------> MRS_fD5_fP > http://www4.rcf.bnl.gov/~tigist/MrsCheck/MRS_Matching_P.gif > > Looking at these plots, it seems that the problem is while making the > dst files. > > Selemon, > > -----Original Message----- > From: Flemming Videbaek [mailto:videbaek_at_bnl.gov] > Sent: Thu 1/4/2007 10:31 PM > To: Bekele, Selemon > Cc: devlist > Subject: Re: [Brahms-dev-l] MRS momentum distribution > > Hi > > This is unusual, I have certainly not seen anything like that before. To check where stuff went bad, check the histograms in the > gtr > production (for Mrstracking and the refitting). In general the MRS.fP comes from the global track ie. refitting while the fD5.fP > from the initial matching. > Hopefully this helps. Please when you send out pleas for help indicate what runs, and dst versions,, your are looking at. > > Flemming > > -------------------------------------------- > Flemming Videbaek > Physics Department > Bldg 510-D > Brookhaven National Laboratory > Upton, NY11973 > > phone: 631-344-4106 > cell: 631-681-1596 > fax: 631-344-1334 > e-mail: videbaek @ bnl gov > ----- Original Message ----- > From: "Bekele, Selemon" <bekeleku_at_ku.edu> > To: <brahms-dev-l_at_lists.bnl.gov> > Sent: Thursday, January 04, 2007 7:05 PM > Subject: [Brahms-dev-l] MRS momentum distribution > > >> >> Hi Brahms, >> >> I started looking into the MRS spectra. I ran into >> a problem when trying to access the momentum distribution: >> >> MRS_fP gives 0 >> MRS_fD5_fP gives both positive and negative values >> >> could this be a problem in the dst production? >> >> Please have a look at >> >> http://www4.rcf.bnl.gov/~tigist/MrsCheck/ >> >> >> Thanks >> >> Selemon, >> _______________________________________________ >> Brahms-dev-l mailing list >> Brahms-dev-l_at_lists.bnl.gov >> http://lists.bnl.gov/mailman/listinfo/brahms-dev-l >> > > > > _______________________________________________ > Brahms-dev-l mailing list > Brahms-dev-l_at_lists.bnl.gov > http://lists.bnl.gov/mailman/listinfo/brahms-dev-l > _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l_at_lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Fri Jan 05 2007 - 14:28:24 EST
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