[Brahms-dev-l] d/p paper

Dear Ramiro,
    I think we are almost there. I'm working on the response to the referee. Here are a few comments on the text. I tried to give some more motivation for why we study the rapidity dependence of coalescence. 

 
Michael

Page 2, LHS after Eqn 2
Change 
"One advantage of this ansatz is that
it facilitates comparison to interferometry radii."

to 
"One advantage of this ansatz is that
it facilitates comparison to interferometry radii.  At lower energies Rg has ben found to be very consistent with radii measured from pi-pi, kk and pp correlations [11]. At RHIC the volume of homogeneity of the emitting source has been studied in great detail at central rapidity but few measurements are available in the forward region. The deuteron  coalescence  analysis gives BRAHMS a unique opportunity to study the volume of the proton source over a wide range of rapidity."

further down change
"RHIC in collider mode" to "at the RHIC collider"

I would suggest the following rework of the B2 vs sqrt(s) discussion. 

"At higher energies, (AGS Au+Au fixed target
p
sNN=4.9 GeV [16–21], at SPS S+S, S+Pb and Pb+Pb
at p
sNN=20-17 GeV [29,22, ], and RHIC Au+Au in collider
mode at p
sNN=200 GeV [23,24, 25]), B2 decreases with energy.  A similar behavior has been seen for HBT radii [32,33]
At SPS and RHIC energies B2  increases with pT . This is consistent with the
formation of deuterons in an expanding medium [26–28].


Page 2, LHS, Last paragraph, first sentence delete "However". 

At the end of this paragraph add
"If deuterons are indeed formed directly by quark coalescence we would expect the spectra to contain no additional information compared to the proton spectra.  Our results suggest that this is not the case since for the inverse slope of the deuterons is not twice that of the protons."

Page 3: LHS
Change 
"This suggests that the system has evolved into
chemical equilibrium at freeze-out." to 
"This suggests that the system has evolved into
chemical equilibrium at freeze-out. While chemical equilibrium has been very well established at RHIC energies for the matter at mid-rapidity these data allow us to test if the matter at forward rapidity also reaches equilibrium." 


Change 
"This was checked
at p sNN=17.3 GeV by comparing RG to radii extracted
from pp and  correlation measurements [11, 39, 40]"
to 

"This was checked
at sNN=17.3 GeV by comparing RG to radii extracted
from $\pi\pi$, kk and pp  correlation measurements [
11, Bearden:2001sy, 39, 40]"

At the bottom of this section change 
"Iof the size and space averaged
phase-space density of the (anti-)proton distributions for
central Au+Au collisions." 
to 
" of the volume of homogeneity and space averaged
phase-space density of the (anti-)proton distributions for
central Au+Au collisions."

to 
Page 3: RHS para 2 delete "TPM1 and TPM2"

Page 4: Top LHC

Change 
"Local tracks are determined in the TPCs and Drift
Chambers for FS, which are situated in a field free region."

to 
"Track reconstruction starts by finding local track segments in the TPCs and (for the forward spectrometer) drift chambers. These detectors are in field free regions and so these local tracks are straight lines. Local tracks on either side of a magnet are matched using …"


Split the 2nd paragraph in two being with 

"We correct for absorption …. using  GEANT 3.21."


Page 6: RHS last 2 lines, change
"Anti-protons show similar growth as pions." to 
"For anti-protons the growth in <f> similar to that of the pions."

New Reference
============
%\cite{Bearden:2001sy}
\bibitem{Bearden:2001sy}
  I.~G.~Bearden {\it et al.}  [the NA44 Collaboration],
  %``Two-kaon correlations in central Pb + Pb collisions at 158-A-GeV/c,''
  Phys.\ Rev.\ Lett.\  {\bf 87}, 112301 (2001)
  [arXiv:nucl-ex/0107005].
  %%CITATION = PRLTA,87,112301;%%






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