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[FIXED] Real vs. Ideal Tracking - Ghosts? [message #14587] Mon, 08 April 2013 10:15 Go to previous message
Ralf Kliemt is currently offline  Ralf Kliemt
Messages: 507
Registered: May 2007
Location: GSI, Darmstadt
first-grade participant

From: *gsi.de
Hello everybody.

While going through the analysis tools I simulated quickly 1000 events of
Psi(3770) --> D+D- --> K-pi+pi+ K+pi-pi-.

Now at the D reconstruction I find much "dirt" in the mass spectrum. More unsettling is the spiky behavior. To see whats going on I did a MC truth match and tried the ideal Pattaern recognition as well.

The plots are attached below. My ideas so far are that the MC indexing is done by the first hit or something, which would be error prone. Also I think the Pattrern Recognition adds LOTS of ghosts and fakes mostly many in one event.

Cheers Ralf

[Updated on: Fri, 19 April 2013 12:30] by Moderator

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