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Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. [message #6892 is a reply to message #6876]

Tue, 10 June 2008 16:48

Lia Lavezzi
Messages: 291
Registered: May 2007
Location: Torino

first-grade participant

From: *pv.infn.it

Hi Sebastian,
I think the problem might be in the Kalman calculation since q/p is used instead of 1/p as first parameter. I say this because using the mu+ in the runDemo.C I get good results. I tried changing the Kalman.cxx code in order to use 1/p (I attach here the changed file, if you search for the word CHECK you' ll find my changes) and it seems to me that it works for both negative and positive particles. Please check if it works also for you and if yes I think that the covariance change of sign is not a problem (I checked more accurately and also in STT it happens sometimes).
Please let me know!
Ciao,
Lia.

Attachment: Kalman.cxx
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[Message index]

		Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Lia Lavezzi on Wed, 04 June 2008 17:13
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Wed, 04 June 2008 19:22
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Wed, 04 June 2008 19:24
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Lia Lavezzi on Thu, 05 June 2008 10:13
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Fri, 06 June 2008 16:56
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Lia Lavezzi on Mon, 09 June 2008 10:29
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Mon, 09 June 2008 14:33
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Mon, 09 June 2008 16:58
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Lia Lavezzi on Mon, 09 June 2008 18:35
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Mon, 09 June 2008 19:52
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Mon, 09 June 2008 21:04
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Lia Lavezzi on Tue, 10 June 2008 16:48
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Lia Lavezzi on Tue, 10 June 2008 17:37
		Re: Revised CbmGeaneUtil, CbmGeanePro and CbmTrackParP. By: Sebastian Neubert on Tue, 10 June 2008 18:20

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