Comments on paper

From: Christian Holm Christensen (cholm@hehi03.nbi.dk)
Date: Thu Nov 22 2001 - 09:54:12 EST

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    Hi all, 
    
    Som minor comments on the paper.  If some or all of these have been
    mentioned before, I'm sorry. 
    
    * Paragraph 1, line reading  
    
         number of parton (mainly gluon, since $N_g \propto 1/ \alpha_s$)
     
      Shouldn't $N_g$ be explained?  And shouldn't it be "partons" and
      "gluons"? 
    
    * Paragraph 4, lines reading 
    
         Four sides of the SiMA were fully populated with six Si detectors
         each, one side had one detector, and one side was left
         unpopulated.  Each Si wafer is ... 
    
      I think we should be consistent, and call it either "detector" or
      "wafer".  I prefer "detector", since a wafer is something that
      industry produces, and we make detectors out of those. 
    
    * Paragraph 4, line reading 
    
         ... and the remaining two sides populated with two detectors and
         one detector, respectively. 
    
      Drop the final "respectively". 
    
    * Paragraph 4, line reading
    
         ... collisions occurring at the nominal interaction vertex. 
    
      I think it should be "interaction point", since a vertex may be
      confused with actual collision, or secondary vertex. 
    
    * Paragraph 4, line reading 
    
         ... GEANT simulations ~\cite{Geant} ... 
    
      Put the cite after GEANT.  Also, the reference should be the one
      found at [1]. That is, 
    
         \bibitem{Brun:1978fy}
         R.~Brun, R.~Hagelberg, M.~Hansroul and J.~C.~Lassalle,
         %``Geant: Simulation Program For Particle Physics
         % Experiments. User Guide And Reference Manual,'' 
         CERN-DD-78-2-REV
    
    Parapgraph 6, line beginning
    
         The ZDCs provide the minimum bias trigger for the experiment ... 
    
      What about the requirement of a least one hit above thresshold in
      the TMA and/or SMA?  Isn't that part of the min. bias definition? 
    
    Paragraph 7, line reading 
    
         ... assuming that a cut on total multiplicity translates to a cut
         on collision centrality. 
    
      Isn't the "cut on total multiplicity" more a definition of the
      experimental centrality, that we assume corresponds to some nuclear
      overlap? 
    
    Paragraph 7, line reaing 
    
         ... the MA and BBC distributions are based on the centrality
         measurements of the corresponding array.
    
      Is there a centrality determination from the BB?  Then how come
      that's not avaliable in BRAT? 
    
    Paragraph 8 
    
      Why do we quote the isotope numbers of Au? 
    
    Paragraph 9, line reading 
    
         ... the increased projectile kinetic energy ... 
    
      Sounds like we're doing a fixed target experiment. 
    
    Paragraph 12, line reading 
    
          ... we obtain: $\alpha=0.98 \pm 0.10 and , 1.04 \pm 0.08$ and
          ... 
    
      Missing  $ pair. The above should be 
    
          ... we obtain: $\alpha=0.98 \pm 0.10$ and, $1.04 \pm 0.08$ and
          ... 
    
    Table 1: 
    
      Instead of 
    
          $<N_{part}>$ 
    
      Why don't we use 
    
          $\left\langle N_{part} \right\lange$
    
      Looks much nicer, and saves space in the table as well! 
    
    Yours, 
    
    Christian Holm Christensen -------------------------------------------
    Address: Sankt Hansgade 23, 1. th.           Phone:  (+45) 35 35 96 91 
             DK-2200 Copenhagen N                Cell:   (+45) 28 82 16 23
             Denmark                             Office: (+45) 353  25 305 
    Email:   cholm@nbi.dk                        Web:    www.nbi.dk/~cholm
    
    [1] http://www.slac.stanford.edu/spires/find/hep/www?AUTHOR=Brun&TITLE=GEANT%3A+SIMULATION+PROGRAM+
         
    



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