GSI Forum
GSI Helmholtzzentrum für Schwerionenforschung

Home » PANDA » PandaRoot » Analysis » Efficiency reduction of antiprotons above 20 degrees
Re: Efficiency reduction of antiprotons above 20 degrees [message #17604 is a reply to message #17603] Tue, 02 December 2014 13:34 Go to previous messageGo to previous message
Karin Schönning
Messages: 65
Registered: August 2012
Location: Uppsala University
continuous participant
From: *physics.uu.se
Another things: concerning the simulations of isotropic Lambda Lambdabar production at 1.64 GeV, the efficiency drop, or maybe one should say very large momentum smearing, above 20 degrees, is an effect which has appeared lately. I ran the same macros on revision 24660 and the difference between this revision and 26319 is striking. See the attach plots of theta versus p for antiprotons from isotropic pbar p -> Lambdabar Lambda. th_p_pbar_iso.pdf corresponds to revision 26319, the other is 24660.

Cheers,
/Karin
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: No back propagation to IP for V_0 reconstruction
Next Topic: True vertex position for secondary decay vertices
Goto Forum:
  


Current Time: Thu Mar 21 07:00:06 CET 2019

Total time taken to generate the page: 0.03554 seconds