[G12] update on neutron mass/eloss corrections

[Craig Bookwalter]

Hi folks,
     I've posted a few more things to the wiki in relation to our 
discussion Friday about the issues I'm having with energy loss and the 
mass of the neutron being too low:

http://clasweb.jlab.org/rungroups/g12/wiki/index.php/Charged_3pi_event_selection#Neutron_Mass

Specifically, Mike Paolone and I each did our own eloss corrections to a 
common set of events and I find our corrections to be identical. In 
addition, I've examined a sample of p pi+ pi- events and when I 
reconstruct the proton via missing mass off the pi+pi-, I see a similar 
underestimation of the mass of the proton.

Feel free to ponder this til Friday, or respond now via the list if you 
so desire. Any ideas are welcome.

--cb


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  Craig Bookwalter			FSU Office:  (850) 644 3808
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