Log entry time 14:36:02 on March 23, 2011

Entry number 352984

Followups:

• 352987 03/23/11 15:11 igorko small correction

I belive that we see a tripple coincidence in BB (again...)

I chained runs: 2939 - 2947 && 2985-2989 && 2994 && 3002 && 3004

total charge for these runs is: ~ 0.27 C

I attach 2 plot.
figure 1: tripple coincidece in BB when TOF corrected based on the
momentum reconstruction from dE/E planes.
figure 2: same as 1, but out of the HRSs coincidence

The cuts that I used:
1)coincidence time
2) retiming region
3) dE/E planes ADCs

abs(DBB.t3[0]-DBB.t1[0]-15)>25 &&abs(DBB.t3[0]-DBB.t1[0])<500
&&(DBB.evtypebits&(1<5))==32 && DBB.edtpr[0]==0 &&
sqrt(BB.tp.e.LE*BB.tp.e.RE)>300 && sqrt(BB.tp.de.LE*BB.tp.de.RE)>300 &&
DBB.t3[0]<620 && DBB.t3[0]>165 && abs(BB.tp.e.tof+354)<7

Figure 1

Figure 2