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[FIXED] Covariances in FastSim [message #16286] Thu, 10 April 2014 12:49 Go to next message
Ralf Kliemt is currently offline  Ralf Kliemt
Messages: 507
Registered: May 2007
Location: GSI, Darmstadt
first-grade participant

From: *gsi.de
Good news, everyone.

FastSim now features covariances. Please update your trunk or scrut14 to rev.24408.

A quick example: The KinFitter with the pbarp foumomentum as 4C produces in the example from macro/scrut the following J/Psi mass (red with fit).

Cheers
Ralf

[Updated on: Fri, 12 September 2014 10:36] by Moderator

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Re: Covariances in FastSim [message #16288 is a reply to message #16286] Thu, 10 April 2014 15:36 Go to previous messageGo to next message
Matthias Steinke is currently offline  Matthias Steinke
Messages: 5
Registered: March 2006
occasional visitor
From: *ep1.ruhr-uni-bochum.de
Hi Ralf,

these are diagonal covariances, as some of us discussed with Klaus on Monday?

Greetings,
Matthias
Re: Covariances in FastSim [message #16289 is a reply to message #16288] Thu, 10 April 2014 17:44 Go to previous message
Klaus Götzen is currently offline  Klaus Götzen
Messages: 293
Registered: June 2006
Location: GSI
first-grade participant
From: *gsi.de
Hi Matthias,


actually the covariances are diagonal in p, theta, and phi, and then transformed to the px, py, pz, E domain. There they are not diagonal anymore.


Best,
Klaus
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