GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Tracking » eta_c reconstruction efficiency
Re: eta_c reconstruction efficiency [message #12704 is a reply to message #12702] Fri, 07 October 2011 11:19 Go to previous messageGo to previous message
Lia Lavezzi
Messages: 291
Registered: May 2007
Location: Torino
first-grade participant

From: *
Hi Dima,
I performed some test with the etac channel, both in july11 and aug11 releases.

I can confirm that the problem of the efficiency loss arises already after the reconstruction, so after the PR + Kalman step.

I attach here two files with the reco - MC momentum distributions for the primary tracks coming from etac: etacjul11.pdf and etacaug11.pdf. You can see that in aug11 there is the efficiency drop.

Unfortunately this was not visible with box generated muons @ 1 GeV/c (see boxgenjul11.pdf and boxgenaug11.pdf attached here).

So indeed the problem seems in the tracking part (I have to take back what I said at the last tracking EVO Sad)


P.S.: forgot to mention: the purple number on the histos is the integral of the histo between the two dotted lines.

[Updated on: Fri, 07 October 2011 11:21]

Report message to a moderator

Read Message
Read Message
Read Message
Read Message
Previous Topic: some options for eta_c analysis
Next Topic: track quality criterion
Goto Forum:

Current Time: Wed Jun 19 09:25:03 CEST 2024

Total time taken to generate the page: 0.01048 seconds