[Halla_pi0] pi0 meeting

[richard lindgren]

Hello,
We will meet at 2:00 PM for the pi0 data analysis meeting. At UVa we will meet in Room 120 as usual and in Doug's office for those of you at JLab.
See you then,
Richard

http://people.virginia.edu/~kc8tn/acc0829.html

You can see the Q2 dependence of the threshold region 0-5 MeV 
comparison of data with DMT and Maid by looking at the following rows;
I do not know where khem normalized the data and the simulation. It looks like
simulation agreement is pretty good here except for upper part of BigBite (negative angles)


W=0-5 MeV
BB=48 deg

kin HRS Angle  
e - 12.5 deg       
f  - 14.5 deg       
g - 16.5 deg       
h -  20.5 deg     

Look at 1d_p in the panel BBtgth vs BBp  each of the above rows.
The x axis of each plot  is proton lab momentum from 0.2 to 0.6 GeV/c. 
The plots go from -0.3 rad to +0.3 rad in steps of .6 rad/15=0.04 rad= 2.3 deg. the vertical opening of BB=+/- 17 deg approximately


e   HRS=12.5 deg low Q^2

UP
        -17 deg                            -14.7  deg                     -12.4 deg                      -10.1 deg                    -7.8 deg

       +7.8 deg                            +10.1  deg                     +12.4 deg                      +14.7 deg                    +17.0 deg
																					Down

f  HRS=14.5 deg


g HRS=16.5 deg



h  HRS=20.5 deg HIgh Q^2

Dr. Richard A Lindgren
Research Professor of Physics 
Department of Physics
University of Virginia
382 McCormick Rd
Charlottesville, VA 22904
ral5q at virginia.edu








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