[G12] Meeting in 20 minutes!

[William Phelps]

Hello Everyone,
This is a reminder that there is a g12 Meeting in room F228 today at 1:00 pm EST. 
http://clasweb.jlab.org/rungroups/g12/wiki/index.php/Jul2011
-Will


Current Meeting:
July 27, 2011
     -(Craig) 3pi update:
          -Adding different waves to Fit 23 (fit presented at Hadron). None of these change the structure or size of the background wave. Other highlights:
               -3++ waves when added take very few events (<1%), most are taken from the 1++D waves, and show little structure:
                    -3++S
                    -3++D
                    -1++D w/ 3++ included
               -4++F waves when added take very few events (<1%) and have little structure. 4++G waves show interesting structure at 1600 MeV but cannot be anything associated with a4(2040) because of acceptance. Seems to be taking events from the 2++ has above 1400, as well as causing some of the 2++ to be redistributed into the 1++D waves.
                    -4++G
                    -1++D w/ 4++G included (no 4++F)
                    -2++D w/ 4++G included (no 4++F)
               -M=0 waves for the 2++, 2-+D and 2-+P. The 2++0 wave fits to zero, as one would expect. The 2-+0 waves take a significant number of events, all of them seemingly from the broad shoulder above 1400 MeV in the 2++.
                    -2++ w/ M=0 included
                    -2-+ M=0 waves
               -0-+P wave shows a strong peak at 1500 MeV, seemingly indicative of a leakage effect. Events are taken from the 1++D and the 1-+0 waves. This is the only introduction that significantly modifies the features of any of the exotic waves.
                    -1++D w/ 0-+P included
                    -0-+P
               -2-+F waves, when included, take few events (<1%). They are taken from the 2-+P waves, and redistributed among the 2-+F as well as the 1-+P waves:
                    -2-+F
                    -2-+P w/ 2-+F included
                    -1-+
               -Sigma isobars, when introduced, have little effect on the strengths or shapes of any waves.
               -Removal of the exotic waves leaves most other waves unaffected. The events seem to be deposited into the 1++ M=0 waves:
                    -1++0 w/ no 1-+




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