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Helix and FairTrackParH [message #9038]

Wed, 22 July 2009 17:37

StefanoSpataro
Messages: 2736
Registered: June 2005
Location: Torino

first-grade participant

From: *to.infn.it

Hello,
I would like to understand the helix parameters used in FairTrackParH, which are different from the ones present in the old-style PndTpcLheTrack.

Could somebody write, according to our "standard" definition of helix parameters, how our track is represented?
The helix parameters are: x0, y0, z0, lambda, phi, charge (even if it is q/p in FairTrackParH).
How can I know the following functions?

x = x(s)
y = y(s)
z = z(s)
px = px(s)
py = py(s)
pz = pz(s)

I have checked some tracking papers but without founding this representation. This is very important for fast correlation inside the barrel.

Thanks in advance.

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[Message index]

		Helix and FairTrackParH By: StefanoSpataro on Wed, 22 July 2009 17:37
		Re: Helix and FairTrackParH By: Alberto Rotondi on Thu, 23 July 2009 10:24
		Re: Helix and FairTrackParH By: StefanoSpataro on Thu, 23 July 2009 13:00
		Re: Helix and FairTrackParH By: Gianluigi Boca on Thu, 23 July 2009 13:44
		Re: Helix and FairTrackParH By: StefanoSpataro on Thu, 23 July 2009 15:45
		Re: Helix and FairTrackParH By: Gianluigi Boca on Thu, 23 July 2009 18:15
		Re: Helix and FairTrackParH By: StefanoSpataro on Thu, 23 July 2009 18:26
		Re: Helix and FairTrackParH By: Lia Lavezzi on Thu, 23 July 2009 19:41
		Re: Helix and FairTrackParH By: StefanoSpataro on Thu, 23 July 2009 20:04
		Re: Helix and FairTrackParH By: Lia Lavezzi on Thu, 23 July 2009 22:02
		Re: Helix and FairTrackParH By: StefanoSpataro on Fri, 24 July 2009 13:18

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