Re: [Brahms-l] Again for the updated paper

Hi Steve,

I will take your comments and suggestions seriously to update the paper.

Best regards,
Zhongbao

On Thu, 30 Jun 2005, Stephen Sanders wrote:

> Hi Zhongbao,  Some comments and suggestions on the latest draft:
> 
> Abstract:   change last sentence:  "...and the results indicate that a 
> significant fraction
> of the charged hadrons produced at intermediate..."
> 
> Para 1...
>   "These experimental results have motivated several suggestions on how
> hadrons are produced at intermediate pT [9-12], such as the possibility 
> that boosted
> quarks from a collectively expanding QGP [10-12] recombine to form the
> final-state hadrons.   An interesting observation from the 
> BRAHMS....collisions[4,8].
> This raises the possibility that initial-state effects may also 
> influence
> hadron production at intermediate pT [ref]."
> 
> Para 2...
> "....at both mid-rapidity and forward pseudorapidity eta = 2.2. "   
> (Otherwise you
> will be defining eta as a symbol that refers to rapidity...)
> 
> Para 3...
> "...for the FS [8], where p is written in units of ..."   (missing 
> article)
> 
> "...kaons up to momenta of 3.2 GeV/c and 2.0 GeV/c, respectively.  For 
> pions above
> 2 GeV/c..."
> 
> General comment:  It is not clear from the text how the overlap regions 
> were handled, or what
> is intended by the estimates of kaon contamination of the pion and 
> proton spectra.  If you
> are doing what I think might be the case, I would suggest a rewording 
> such as:
> 
> "Above 2 GeV/c a correction is applied for the kaons that fall in the 
> region where the pion and kaon 2 sigma PID cuts overlap.  This allows 
> the pion pT spectrum to be  extended to 3 GeV/c, at which point the 
> kaon correction is about 5%."
> 
> "Between 7.1 GeV/c and 7.9 GeV/c, the proton spectrum is corrected for 
> the kaons falling within the overlapping PID regions.  Between 7.9 
> GeV/c
> and 9 GeV/c, the Cherenkov threshold for protons, the RICH detector is 
> used to determine the kaon contamination of the proton spectrum.  The 
> kaon correction in this region is less than 6% of the proton yield.    
> Above 9 GeV/C, the RICH detector can be used directly to identify the
> proton yields."
> 
> 
> Para 4... (last sentence)
> "...has not been corrected but is accounted for..."
> 
> Para 5...  (first sentence)
> "The top row..."
> 
> Mid-way through this paragraph rapidity densities are given in units of 
> GeV?!   Maybe the unit can be moved inside
> the parenthesis to be associated with the slope parameters?
> 
> Figure 1.    I'm pretty sure the size of the inside captions will fail 
> to satisfy the rules of the APS style manual.  Also, the open cross
> should be specified as p+p.
> 
> Para 6...
> "The bottom row of Figure 1..."
> 
> "...making a comparison of anti-proton to pion yields difficult."
> 
> Para 7...
> 
> If possible I would state what part of the measurement has a 20% 
> systematic uncertainty, and what has a 24% uncertainty.
> Stating a systematic uncertainty range seems strange...
> 
> "Similar to the unidentified charged hadrons[4]... and levels off at a 
> value below unity above 1.5 GeV/c, indicating that...
> 
> "...yields at forward rapidity show an even stronger suppression, 
> indicating...might be contributing to the strong high..."
> 
> "This indicates that a significant part of the particle yield at high 
> pT can be attributed to ..."
> 
> Fig. 2:  Same comment about quoting a 20-24% systematic uncertainty 
> range.
> 
> Para 8 and Fig. 3:
> 
> I think you need to show the corresponding pbar/pi- ratios for pp 
> collisions.   This could be done
> with two curves and would help emphasize the importance of the 
> reference spectra in
> obtaining the observed rapidity dependence of the RAA values.
> 
> Para 9...
> "...effects such as gluon saturation contributing to the suppression.  
> However, the suppression is not seen
> for (anti-)protons at intermediate pT at either mid-rapidity or forward 
> pseudorapidity eta = 2.2.
> 
> "The ratios at intermediate pT seem to decrease with rapidity.  At 
> mid-rapidity the ratio can be qualitatively
> described by a parton recombination model with collective flow."
> 
> Comment:  The final sentence focuses on the longitudinal extent of the 
> created medium.   It ignores the possibility
> that saturation effects may be playing a role.   Is this fair?
> 
> 
> Overall, Nice job!
> 
> ...steve
> 
> On Jun 29, 2005, at 10:02 PM, yin.zhongbao@ift.uib.no wrote:
> 
> > Dear All,
> >
> > thanks to  Ramiro's comments, I have updated the paper and also updated
> > two references. It is still located at
> > www.ift.uib.no/~yin/hptPiAndProton_v5.pdf
> > www.ift.uib.no/~yin/hptPiAndProton_v5.ps
> >
> > Thank you for your further help and comments.
> >
> > Best regards,
> > Zhongbao
> > -- 
> > -----------------------------------------------------
> > Zhongbao YIN                 Phone:  +47-55-582792 (O)
> > Address:                             +47-55-276803 (H)
> >   Fantoftveien 14G 466       E-mail:
> >   P.B. 694, 5075 Bergen        Yin.Zhongbao@ift.uib.no
> > ------------------------------------------------------
> >
> >
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> > Brahms-l@lists.bnl.gov
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> 
> 

-- 
-----------------------------------------------------
Zhongbao YIN                 Phone:  +47-55-582792 (O)
Address:                             +47-55-276803 (H)
  Fantoftveien 14G 466       E-mail:
  P.B. 694, 5075 Bergen        Yin.Zhongbao@ift.uib.no
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