GSI Forum: Analysis » No back propagation to IP for V

Home » PANDA » PandaRoot » Analysis » No back propagation to IP for V_0 reconstruction

Show: Today's Messages :: Polls :: Message Navigator

Re: No back propagation to IP for V_0 reconstruction [message #17627 is a reply to message #17626]

Thu, 04 December 2014 11:07

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: *to.infn.it

For the invariant mass distribution you need to know the production vertex, then you need to use a vertex fitter.

For the k0 vertex, I suppose you use MC information (right)?. I am not able to undertand distance/gammabeta, just distance could help. But if the counts are the same, in your comparison there sould be something wrong, because the plot means that the k0 moved from production point close to the IP (w/ back propagation) towards the external part (w/o), and this is not possible, Are you sure you are taking the distance/gamma/beta from the proper place?

Report message to a moderator

[Message index]

		No back propagation to IP for V_0 reconstruction By: donghee on Tue, 02 December 2014 15:29
		Re: No back propagation to IP for V_0 reconstruction By: StefanoSpataro on Tue, 02 December 2014 17:14
		Re: No back propagation to IP for V_0 reconstruction By: donghee on Tue, 02 December 2014 20:57
		Re: No back propagation to IP for V_0 reconstruction By: donghee on Wed, 03 December 2014 23:17
		Re: No back propagation to IP for V_0 reconstruction By: StefanoSpataro on Wed, 03 December 2014 23:21
		Re: No back propagation to IP for V_0 reconstruction By: donghee on Thu, 04 December 2014 10:47
		Re: No back propagation to IP for V_0 reconstruction By: StefanoSpataro on Thu, 04 December 2014 11:07
		Re: No back propagation to IP for V_0 reconstruction By: donghee on Thu, 04 December 2014 12:43
		Re: No back propagation to IP for V_0 reconstruction By: StefanoSpataro on Thu, 04 December 2014 13:23
		Re: No back propagation to IP for V_0 reconstruction By: donghee on Thu, 04 December 2014 22:26
		Re: No back propagation to IP for V_0 reconstruction By: StefanoSpataro on Sat, 06 December 2014 16:53
		Re: No back propagation to IP for V_0 reconstruction By: Ralf Kliemt on Thu, 04 December 2014 12:10
		Re: No back propagation to IP for V_0 reconstruction By: donghee on Thu, 04 December 2014 13:02

Previous Topic:	Vertex fitter for two consecutive decays
Next Topic:	Efficiency reduction of antiprotons above 20 degrees

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Nov 14 13:05:03 CET 2025

Total time taken to generate the page: 0.00837 seconds