GSI Forum: Analysis » vertex fitting

Home » PANDA » PandaRoot » Analysis » vertex fitting

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

Re: vertex fitting [message #17263 is a reply to message #17257]

Wed, 10 September 2014 11:38

Alexandros
Messages: 51
Registered: January 2014
Location: KVI

continuous participant

From: *kvi-cart.rug.nl

Hi again,
I have one more question..
I am trying to calculate ctau for D0 meson in my analysis(123micrometers)
From the mc the calculation is correct(125micrometers).
From the vertex information I get 185micrometers..
I have looked several times my code and I could not find a single mistake..
Is there a chance, since we are talking about micrometers that the resolution is not good or there is something else wrong??
I attach my code and my results to get an idea..
Thanks!!

Attachment: Analysis.C
(Size: 12.57KB, Downloaded 388 times)
Attachment: Draw.C
(Size: 3.03KB, Downloaded 374 times)
Attachment: distance_from_IP.pdf
(Size: 17.98KB, Downloaded 420 times)
Attachment: betaVSenergy.pdf
(Size: 34.63KB, Downloaded 358 times)
Attachment: ctau_and_beta*gamma_mc.pdf
(Size: 16.88KB, Downloaded 360 times)
Attachment: ctau_and_beta*gamma_data.pdf
(Size: 17.11KB, Downloaded 363 times)

Report message to a moderator

[Message index]

		vertex fitting By: Alexandros on Mon, 08 September 2014 13:26
		Re: vertex fitting By: Ralf Kliemt on Mon, 08 September 2014 14:07
		Re: vertex fitting By: StefanoSpataro on Mon, 08 September 2014 14:21
		Re: vertex fitting By: Alexandros on Wed, 10 September 2014 11:38
		Re: vertex fitting By: StefanoSpataro on Wed, 10 September 2014 11:57
		Re: vertex fitting By: Alexandros on Wed, 10 September 2014 12:07
		Re: vertex fitting By: StefanoSpataro on Wed, 10 September 2014 12:08
		Re: vertex fitting By: Alexandros on Wed, 10 September 2014 12:51
		Re: vertex fitting By: StefanoSpataro on Wed, 10 September 2014 14:59
		Re: vertex fitting By: Alexandros on Wed, 10 September 2014 15:15

Previous Topic:	Is there a fast way of histogramming RhoCandLists?
Next Topic:	Ds reconstruction - test with trunk rev-25813

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Sep 05 10:59:52 CEST 2025

Total time taken to generate the page: 0.00831 seconds