ed tensor updates Re: [BLAST_ANAWARE] some recent result for analysis meeting

From: Chi Zhang (zhangchi@MIT.EDU)
Date: Tue May 04 2004 - 22:28:49 EDT


Hi, I can't come to the meeting either, here are some updates:

data taken since yesterday show LOW tensor asymmetry: 29+-9%. we had
49+-5% in march.

luminocity increased. ed counts/coulumb increased: (N_60cm-N_40cm)/N_40cm
= 77%.

if I quote Vitaliy's number for e'p: (11.5-7.6)/7.6 = 51%.

did some background study. from empty run data, cell wall background is
about 1.5% of ed-elastic sample cut out. however, this is based on only 40
events sneaked through the cuts. Have not come up with a way to estimate
background from e'p precisely yet.

Chi



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