***************************** BIN pos_p=30-50_pt=1.1-1.3 25 lost points 35 possible crossing problem with other tracks 49 lost points 58 lost points 75 split track {no, #34 is another track, look at sideview} 84 split track ? {no, #32 and #33 are different ones, look at sideview} ********************************** BIN neg_p=30-50_pt=1.1-1.3 1 very debatable track, just a few points in MTPC, possible V0 27 very debatable track, just a few points in MTPC 41 very debatable track, just a few points in MTPC 47 bad fit, 9 point track 61 very debatable track, just a few points in MTPC 74 very debatable track, just a few points in MTPC ********************************** General comment to this bin: Most tracks both neg and pos are seen just in MTPC, therefore only fits including vertex are relevant. For negatives I have seen several tracks with just 20 or less points in MTPC just at the edge of the chamber. These are very debatable. I do not remember such tracks among positives, but that my bu just low statistics, otherwise I do not see any other reason. Positives 25 ++------------+--------------+-------------+--------------+------------++ 20 ++ + + + ** + ++ 15 ++ ** ++ | *** ** | 10 ++ **** * ****** ++ 5 ++ + ** * + ***** ** * + ++ 0 ***********************---***********-----**---**********************--++ 0 50 100 150 200 250 Number of points Negatives 25 ++------------+----------$$--+-------------+--------------+------------++ 20 ++ + $$ + + + ++ 15 ++ $$ $$ ++ | $$ $$ | 10 ++ $$ $$ ++ 5 ++ + $$ $$ $$ $$$$$$$$$ + ++ 0 $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$----+--$$$$$$$$$$$$$$$$$$$$$$$--++ 0 50 100 150 200 250 Number of points