GSI Forum: Analysis » Chi2 of kinematic and vertex fitters

Home » PANDA » PandaRoot » Analysis » Chi2 of kinematic and vertex fitters

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

Re: Chi2 of kinematic and vertex fitters [message #15752 is a reply to message #15750]

Tue, 03 December 2013 11:49

Elisabetta Prencipe (2)
Messages: 214
Registered: February 2013

first-grade participant

From: *ext.kfa-juelich.de

Hi Stefano,

I am running my test jobs in the pandaroot rev. 22626, and I found again negative chi2 of the vertex fit (only; the mass fit constraint does not give negatice chi2 in my case). The difference with the previous revision (rev 21003) is that now I get improvements: only decays where photons got involved give me few entries with negative chi2. In the previous revision (21003), I had many of them. Also, the efficiency is definitively improved in the new revision (22626): in the decay p pbar to Ds Ds1'(2536)+, Ds1'(2536)+ to D*0pi+, I have got:

rev 21003: 21% efficiency
rev 22626: 30% efficiency

cheers, Elisabetta

Report message to a moderator

[Message index]

		Chi2 of kinematic and vertex fitters By: StefanoSpataro on Thu, 28 November 2013 17:07
		Re: Chi2 of kinematic and vertex fitters By: Elisabetta Prencipe (2) on Tue, 03 December 2013 11:49
		Re: Chi2 of kinematic and vertex fitters By: Ralf Kliemt on Tue, 03 December 2013 14:23
		Re: Chi2 of kinematic and vertex fitters By: StefanoSpataro on Fri, 06 December 2013 17:39
		Re: Chi2 of kinematic and vertex fitters By: StefanoSpataro on Tue, 10 December 2013 18:16
		Re: Chi2 of kinematic and vertex fitters By: Jennifer Pütz on Mon, 06 July 2015 14:14
		Re: Chi2 of kinematic and vertex fitters By: StefanoSpataro on Mon, 06 July 2015 14:18
		Re: Chi2 of kinematic and vertex fitters By: Jennifer Pütz on Mon, 06 July 2015 14:56
		Re: Chi2 of kinematic and vertex fitters By: StefanoSpataro on Wed, 08 July 2015 10:49
		Re: Chi2 of kinematic and vertex fitters By: Jennifer Pütz on Wed, 08 July 2015 11:20
		Re: Chi2 of kinematic and vertex fitters By: StefanoSpataro on Wed, 08 July 2015 11:26
		Re: Chi2 of kinematic and vertex fitters By: Jennifer Pütz on Wed, 08 July 2015 15:28
		Re: Chi2 of kinematic and vertex fitters By: StefanoSpataro on Thu, 09 July 2015 11:39

Previous Topic:	Probability ditribution of mass constraint fitting in oct14 vs. mar15
Next Topic:	Invariant Mass Distribution Widening after 4C Fit

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Tue Jan 14 01:56:25 CET 2025

Total time taken to generate the page: 0.00919 seconds