Re: paper on high- pt suppression.

From: Ian Bearden (bearden@nbi.dk)
Date: Mon Jun 30 2003 - 12:38:36 EDT

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    Hi Steve,
    I will try to accommodate you.
    On mandag, jun 30, 2003, at 18:03 Europe/Copenhagen, Stephen J. Sanders 
    wrote:
    
    > Dear JJ and Ian,
    >  In the spirit of parallelism, I've gone through the latest draft 
    > looking for additional
    > typos, grammar errors, etc.  I think the physics story is now pretty 
    > stable, although
    > I will be interested in seeing the final figures and figure captions.  
    > In any case, here is another list
    > of (mostly) minor items:
    >
    > Institution list:  The zip code for the University of Kansas is 66045. 
    >   (I made this mistake a while
    > back and keep forgetting to fix it on subsequent papers...)
    >
    > Para 1:  	e.g. (rather than eg.)
    > 		change to: "... a high degree of nuclear transparency, as may be ... 
    > [1]."  Otherwise
    > 			the parenthesis are not matched.
    OK
    > 		change to: " ...subsequently forms suggest that the system, ..."  
    > Otherwise the subject
    > 			is separated from the verb.
    OK
    > 		change to: "An analysis of particle ratios at midrapidity..."  
    > Remove unnecessary comma.
    O,K  (conservation of commas...)
    >
    > Para 2:	change to: "...from initial hard parton scatterings, have been 
    > ..."
    I say "are predicted"  gives us one more word of space...
    >
    > Para 4:     	change to: "BRAHMS consists of two magnetic spectrometers 
    > for
    > 			measuring hadrons and antihadrons (the MidRapidity
    > 			Spectrometer, MRS, and the Forward Spectrometer, FS) that for the
    > 			present measurements were positioned at 90 degrees (eta = 0) and
    > 			12 degrees (eta = 2.2), respectively."    There  may be a better 
    > rephrasing,
    > 			but there needs to be a "respectively" somewhere in the statement 
    > and
    > 			we only report on measurements at two rapidity points, not a 
    > "range".
    I added respectively...look at the draft which you should recieve in 
    less than one hour...
    >
    > 		"An additional trigger based selected..."    Based on what?
    > 		"...most central events (0-  ..."  Is 0- some special jargon symbol? 
    > The use of a
    > 			special font?  Something is strange...
    I have now:  An addition hardware trigger selected the ~25% most 
    central events for parts of the...
    > 		Why is the 6.6m location singled out in the list of inel vertex 
    > positions?  The second
    > 			"z = " should be removed.
    >
    > Para 5:   	change to: "The spectra are from..."   Remove extra comma.
    OK.
    > 		change to: "...for the acceptance of the spectrometers and for the 
    > tracking efficiency."
    > 			I would suggest removing the final "and normalized to the number of 
    > events."
    > 			If the final clause is felt necessary, then the entire sentence 
    > should be reworked
    > 			or broken into two.
    removed "and normalized..."
    > 		I would suggest adding in the HIJING reference the specific version 
    > that we used,
    > 			particularly since this is an issue for the dAu analysis.
    OK...Hiro, Claus...what version?
    >
    > Para 6:  	In defining R_AA, the superscript should also be AA, rather 
    > than AuAu.  Presumably
    > 			this definition is meant to be generic.  However, the figures 
    > should then
    > 			have R_AuAu, as is used in the text.
    There are no superscripts. If you insist, I'll change the subscripts, 
    but for now I'd rather work on more substantive comments.
    >
    > Para 7:	change to:  "For the various centrality cuts shown in Fig. 1 
    > we use ..."   This corrects two
    > 			problems:  1) Without an explicit reference back to Fig. 1 the 
    > reader will assume
    > 			the Fig. 2 cuts, of which there are only two shown.  2) "use" is 
    > missing.
    Now reads: For the centrality cuts used, Nbin=....
    > 		Is is p_t, p_T, or pt?  All three forms are used for the transverse 
    > momentum!
    I changed them all to p_T .
    > 		change to:  "We note, however, that because of the lack of an..."   
    > The "due to" form is
    > 			not appropriate here.
    We note, however, that because we lack an ...
    > 		change to: "We estimate it to be 30%...."   Need "be".
    fixed
    > 		Fix: ' before cent and per...  I believe in LaTeX you use two single 
    > quotes '' to get
    > 			the correctly slanted double quote.
    I'll check...
    > Para 8:  	Fix: dN/d_(gluon)
    done
    > Para 10:	I don't think that "participant zone" is defined anywhere in 
    > the paper.  This may be
    > 			somewhat confusing jargon.
    I agree with you.  Give me an idea that is better.
    > 		"i.e." not "i.e"
    > Para 11:	Same "i.e." issue...
    > 		change to: "...and absorption mechanisms and by carrying..."  Remove 
    > unnecessary comma.
    >
    done
    > References:  I believe the convention on the arXiv archive is to use 
    > lowercase: i.e., "nucl-ex" rather than "Nucl-ex"
    > 		ref 11 should be "Nucl. Phys."
    Nucl. Phys. what?
    > As a general comment on the figure,  I would suggest changing all of 
    > the eta appox = 2 notations to
    > 		eta = 2.2.  This would make them more consistent with the text.
    This is being done...I hope....
    
    Thanks Steve.
    Look forward to a new draft  in an hour or so...
    Cheers,
    Ian
    >
    >
    >
    > On Sunday, June 29, 2003, at 03:00 PM, Jens Jørgen Gaardhøje wrote:
    >
    >> Dear Colleagues,
    >>  
    >> As you are aware a major international interest is focussing on the 
    >> phenomenon called high-pt suppression at RHIC. By many - perhaps at 
    >> the moment mostly theorists-  this effect is seen as evidence for 
    >> QGP. It thus constitutes a highly significant physics issue.
    >>  
    >> The BRAHMs collaboration has data on this issue that constitute 
    >> interesting, and in part unique ,contributions to the ongoing 
    >> discussion.
    >>  
    >> The data include high pt suppression at y=0 and 2.2 for Au+Au 
    >> collisions and lack of suppression in d+Au collisions. This 
    >> information was presented at the public colloquium at BNL on June 
    >> 17th by Ian Bearden, and shown at the NN2003 conference by Claus 
    >> Ekman Joergensen and JJG (it even made the 9 o'clock news in the 
    >> Russian channel 1). The other collaborations had manuscripts ready 
    >> for submission on June 17th and have submitted them.
    >>  
    >> Starting with the discussions in Krakow, a very significant effort 
    >> has been going on to produce a manuscript for submission to PRL. A 
    >> heavy analysis and paper writing effort has been going on. The aim is 
    >> to be ready to submit a mansucript on Tuesday. We feel that it is 
    >> absolutely essential for the 'renommée' of the  BRAHMS collaboration 
    >> to publish its results on the shortest possible time scale and 
    >> thereby maintain its competitiveness within the RHIC program and on 
    >> the international scene.
    >>  
    >> I enclose a copy of the present state of the manuscript. Many 
    >> discussions regarding the analysis have been going on between 
    >> (mainly) BNL and NBI. Likewise many contributions to the manuscript 
    >> draft have been incorporated in the last week (DB, FV, SS, KH, MM, 
    >> JBZ, IGB, HB and others). Many have helped with input to the analysis 
    >> (TST, HI etc..).
    >>  
    >> Monday will be a crucial day. The analysis will hopefully settle down 
    >> , and 'final' figures will be produced. You will already have seen 
    >> various drafts of the manuscript under development on hte Brahms >> list.
    >> Nevertheless, we ask you to consider the present manuscript with its 
    >> physics information and give us tomorrow your opinion on it. 
    >> Naturally, any changes will be circulated immediately to the 
    >> collaboration for further approval.
    >>  
    >> We apologise for the rush, which is, however, dictated by the need to 
    >> make public the BRAHMS results to the community as soon as possible 
    >> and by the fact that many of the central people are/will be away in 
    >> the coming weeks due to planned vacation and travel. Thus we propose 
    >> this parallellism of action. Otherwise we do not see a submission 
    >> before mid-August, with the consequences that this implies.
    >>  
    >> with best regards
    >> and hoping to hear from you
    >> JJG
    >>  
    >>  
    >> ____________________________________________________________
    >> Jens Jørgen Gaardhøje, Assoc. Prof., Dr. Sc.
    >> Niels Bohr Institute, Blegdamsvej 17, 2100 Copenhagen, Denmark.
    >> Tlf: (+45) 35 32 53 09, secr. (+45) 35 32 52 09, Fax: (+45) 35 32 50 
    >> 16.
    >> UNESCO Natl. Comm., secr. (+45) 33 92 52 16.
    >> Email: gardhoje@nbi.dk.
    @nbi.dk.
    >> ____________________________________________________________
    >>  
    >>  
    >> <high-pt36.pdf><high-pt36.ps>
    


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