User name Ramesh/Larry
Log entry time 16:40:29 on March24,2005
Entry number 142331
keyword=T5 neutrons with new codeAs per Laryy Weinstein's suggestin I plotted
TC_n.ntof
variable with cuts
TCut ct2by1="CT.ct_2by1*1e9>98.6&&CT.ct_2by1*1e9<100.&&L.tr.n==1&&R.tr.n==1&&L.s2.nthit==1&&R.s2.nthit==1" ;
TCut pm= "SK.pmiss>0.25&&SK.pmiss<.4";
TCut ldp= "abs(L.gold.dp)<0.05";
TCut lth= "L.gold.th>-0.07&&L.gold.th<0.06";
TCut lph= "L.gold.ph<0.03&&L.gold.ph>-0.0312";
TCut ly = "L.gold.y>-0.0075&&L.gold.y<-0.0015";
TCut rdp= "R.gold.dp>-0.053&&R.gold.dp<0.055";
TCut rth= "R.gold.th>-0.07&&R.gold.th<0.06";
TCut rph= "abs(R.gold.ph)<0.033";
TCut ry = "R.gold.y>-0.001&&R.gold.y<.012";
TCut ct=ct2by1&&pm&&ldp&<h&&lph&&rdp&&rth&&rph&&ly&&ry;
TCut ct1=ct2by1&&ldp&<h&&lph&&rdp&&rth&&rph&&ly&&ry;
The canvas contains eight histograms, on the first row the plots use no missing momentum cut whereas in the second row all four plots use missing momentum cut. In a row from left to right the thing that varies is only the cosine of angle
(In each row from left to right:
the first histo has: cosine of angle>0;
the second: histo has 1>cosine of angle>0.92;
the third histo has: 0.92>cosine of angle>0.84 and
the last histo has: 0.84>cosine of angle>0.76).
The second histogram in each row is the best candidate seeing tripple coincident neutrons. The data is only from March runs upto yesterday.
FIGURE 1
