Here are some quick comments since I am already late (but I am also not an author I realize now:-). The paper reads very well and the data are looks 99% great. last %: Figure 3. Lower left. I would remove the two open d points as the enormous error bar IMO distorts the picture. There might be some errors in the following logic. I am not sure that I understand the discussion of the chemical potential at the bottom of page 5. Are we sure that we are comparing apples to apples when we compare the chemical potentials of our fit and statistical models? Statistical models have long decay chains from initial hadron distributions to final hadron distributions. So we should compare our fit value to the "effective" proton chemical potential. I do not know if that differs from the baryon potential? Secondly I assume that out p-bar/p agrees with the statistical model. I would then naively guess that d-bar/d~(p-bar/p)**2 if the chemical potential is the same. In that way we can directly compare if our p-bar/p chemical potential and d-bar/d are the same. (Or am I wrong?) I think it is a very interesting result that the volume of homogeneity does not depend on rapidity. Here are some thoughts on this. "volume of homogeneity" is sort of "volume" over "flow" Our blast wave analysis has shown us that the flow IS rapidity dependent. The initial volume is the same at all rapidities (it is just defined by the collision geometry) so the initial phase space density is not the same! This implies that the evolution - presumably hydrodynamics - exactly generates enough flow that in the end the volume of homogeneity (aparent (?) phase space density) is exactly the same! If one really wants to push it one could ask what would happen in hydro if we let it freeze out later i.e. at 10 MeV. Would we then overcompensate? i.e. is this seen from hydro some miraculous tuning or just an asymptotic limit that is quickly approached. Cheers, Peter On Mon, 2010-03-15 at 16:57 -0400, Ramiro Debbe wrote: > Dear Collaborators, > On behalf of the authors of the dpAuAu paper please find here the latest version that comes out of several rounds of checks of data and text. Please give us your comments before the end of next week. > Thanks > > _______________________________________________ > Brahms-dev-l mailing list > Brahms-dev-l_at_lists.bnl.gov > https://lists.bnl.gov/mailman/listinfo/brahms-dev-l -- Peter Christiansen Email: peter.christiansen_at_hep.lu.se Phone: (+46) 046-2227709 Address: Lund University Department of Physics Div. of Experimental High-Energy Physics Box 118 SE-221 00 Lund Sweden _______________________________________________ Brahms-dev-l mailing list Brahms-dev-l_at_lists.bnl.gov https://lists.bnl.gov/mailman/listinfo/brahms-dev-lReceived on Sat Mar 20 2010 - 12:24:21 EDT
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