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Re: Using the 4C fit "outside the framework" [message #17906 is a reply to message #17886] Tue, 17 February 2015 12:00 Go to previous message
Ralf Kliemt is currently offline  Ralf Kliemt
Messages: 491
Registered: May 2007
Location: GSI, Darmstadt
first-grade participant

From: *gsi.de
Hello Marcel,

in order to geta fitter work you have to provide your measurement as well as the symmetric covariance matrix. In case of the RhoCandidate and the kinematic fits you need the four-momentum and the 4x4 matrix. The trivial covariance matrices contain the squared errors on the diagonal. You can use void SetCovP4 ( const TMatrixD& covP4 ); to set it in the candidate.

Cheers
Ralf


See more on the RhoCandidate in the header: https://subversion.gsi.de/trac/fairroot/browser/pandaroot/trunk/rho/RhoB ase/RhoCandidate.h
 
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