Hi Truls, Just one technical question. Why for d^2N/(pt dpt dy) you use GeV^-2 c^3 unit? In deed the invariant cross section in the form E*d^3N/dp^3 has the unit of GeV^-2 c^3 but when calculating Jacobian d(px py px)/d(y pt phi) people do the calculation in natural units thus loose "c", in other words E*d^3N/dp^3 = d^3N/ (pt dpt dy dphi) only if c=1 otherwise one has to multiply the right hand site by "c". Because you dont do this (you plot d^2N/(pt dpt dy) and not c*d^2N/(pt dpt dy)) the right unit should be GeV^-2 c^2 (as in Star and Phenix papers.) But in my opinion it is better use just GeV^-2 as all our calculation are performed in natural system of units (c=1,k=1,hbar=1...) Sorry for focussing on such details. Cheers, Pawel. Truls Martin Larsen wrote: >Uploaded to our conference pages... > >Truls > >*---------------------------------* >|http://www.nbi.dk/~trulsml / >|Truls Martin Larsen / >|trulsml_at_nbi.dk . >|The Niels Bohr Institute // >|Work Address: / \0 >|Blegdamsvej 17 /\_/ >|DK-2100 Copenhagen / / >|Tel: +45 35325269 / -- >| /_/ | >|Home address: / \ >|Holger Danskes Vej 28H| ' >|DK-2000 Frederiksberg | >|Denmark | >|Mob: +45 20974802 | >*----------------------* > >_______________________________________________ >Brahms-l mailing list >Brahms-l_at_lists.bnl.gov >http://lists.bnl.gov/mailman/listinfo/brahms-l > > > -- ---------------------------------------------------------------------- | Pawel Staszel | | Jagiellonian University | | Institute of Physics email: ufstasze_at_if.uj.edu.pl | | Reymonta 4 phone: (+48) 12 663 5705 | | Krakow 30059 FAX: (+48) 12 633 7086 | | Poland | ---------------------------------------------------------------------- _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l_at_lists.bnl.gov http://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Mon Nov 13 2006 - 07:05:28 EST
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