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eta_c drop in efficiency
https://forum.gsi.de/index.phpindex.php?t=rview&goto=12731&th=3381#msg_12731
I investigated the discrepancy in efficiency in the Eta_c channel
when using the july11 release or the latest trunk version.
( pandaroot/macro/run/tdrct/eta_c directory).
In my opinion the problem is in the generation/digitization of the
Eta_c events.
In fact, when I use the events generated and digitized (i.e. the
evt_points_stt.root and evt_params_stt.root and evt_digi_stt.root files) with the july11 libraries AND I ANALYSE THEM WITH THE
CURRENT TRUNK REVISION I obtain the same Eta_c plots obtained
when I ANALYSE THE SAME EVENTS WITH THE july11 VERSION OF THE CODE.
Please look at the attachment plots : trunk.pdf is when
the analysis is done with trunk, july11.pdf when I use the
july11 library.
Gianluigi]]>Gianluigi Boca2011-10-19T16:02:01-00:00Re: eta_c drop in efficiency
https://forum.gsi.de/index.phpindex.php?t=rview&goto=12735&th=3381#msg_12735
From the plots you posted, actually I see that the number of counts in eta_c peak for trunk is 2 times lower than for july11. Number of entries in histograms are almost the same but it's not an indicative number since it includes underflow/overflow.
Dima]]>Dima Melnychuk2011-10-19T20:22:42-00:00Re: eta_c drop in efficiency
https://forum.gsi.de/index.phpindex.php?t=rview&goto=12740&th=3381#msg_12740
And I admit I have not well understood what you have done exactly.]]>StefanoSpataro2011-10-20T08:00:09-00:00