[Brahms-dev-l] analysis plans for brahms

Dear Collaborator,

 

 

The analysis weekly meeting has primarily dealt with the QM proceedings in the two months or so. We will like to establish a framework for these meetings that ensures that the major ongoing analysis will be completed, presented, and discussed as one step towards the publications of the BRAHMS results.

 

To this end one needs summary from each analysis in turns, where it stands- progress, problems, next steps and so on, including generation of Analysis notes and web pages with supporting information.

 

We like to organize this with a longer report (presentation) for each analysis on a time scale of every 4'th week, and with rolling update from each analysis every week. So each meeting should have 1 to 2 major contributions and a number of smaller brief 3-5 minutes comments. Of course anyone should feel free and encouraged to post and discuss material at any time. What we want is to ensure that each meeting has at least one significant presentation.

 

A draft of scheduled presentations that should go in depth (~30+ minutes) is given in the table below. This should be taken as a suggestion how to proceed, so please give us feedback on this for changes, additions, etc.

 

 

      Date
     Presentation.1
     Presentation.2
     
      2/23
     Dipali: phi in Au.Au
      
     
      3/2
     Ramiro d.Au identified at high y
      
     
      3/9
     Selemon: CuCu spectra
     Nathalia -
     
      3/16
     Catalin: AuAu high pt
     Flemming: pp 62 GeV
     
      3/23
     Truls: auau,cucu 62
     JH: Spin at 62 and 200 GeV
     
      3/30
     Steve: v2 analysis
      
     
      4/5
      
      
     
      4/12
      
      
     

 

 

In addition to this we will suggest that we agree on some specification for how the spectra from all of these analyses are made available, and saved as a reference for easy access and additional analysis. For most of what we do this should be relatively easy. After all most of the basic measurements are spectra for given rapidity, specie and centrality. The precise choice may well depend on the particular reaction system, after all not all data have similar statistics. To get the discussion started how we move towards such goal is a list with current choices is given below.

 

Best regards

            Steve and Flemming

 

 

Spectrum specification : 

Each spectrum analysis should deliver spectra (invariant yields as root directories with simple names, and titles) (ptalso mt?),

Centrality CuCu (0-10, 10-20, 20-30, 30-40,40-60,60-80) -  Selemon

Centrality AuAu (0-10, 10-20, 20-50, 40-60) - Catalin

Centrality dAu (0-30, 30-60, 60-80) those were used in multiplicity papers.

Rapidity bins (dy = 0.2) HY - dA, pp

 

What are the appropriate centrality scales, dy and dpt. In general ones should try to stick to something like dy-0.1, dpt=50 MeV/c, coarser binning at higher rapidities 

 

 



 

--------------------------------------------
Flemming Videbaek
Physics Department 
Bldg 510-D
Brookhaven National Laboratory
Upton, NY11973

phone: 631-344-4106
cell:       631-681-1596
fax:        631-344-1334
e-mail: videbaek @ bnl gov


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