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Re: Vertex fitter for two consecutive decays [message #17574 is a reply to message #17572] Tue, 25 November 2014 12:00 Go to previous messageGo to previous message
Ralf Kliemt is currently offline  Ralf Kliemt
Messages: 500
Registered: May 2007
Location: GSI, Darmstadt
first-grade participant

From: *gsi.de
Hi Karin,

The Lambda is a neutrlly charged particle. Our fitters cannot create avalid Helix & Covariance from that.
Since the Xi does fly some distance my only suggestion is you try and make an analytical helix-line point-of-closest-approach finder by hand.


Cheers
Ralf
 
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