Lilith

Problem defining Cwz=Cw/Cz

Asked by Humberto Reyes

Dear Jérémy Bernon,

Following the examples in the Lilith package, I made a 2d plot for the likelihood of Cw and Cz and now I´m triyng to reproduce the lilkelihood profile for Cwz=Cw/Cz in 1D plot, but I'm having trouble defining Cwz in the Python code. I keep getting error messages.

What would be the proper way to define it?

Regards, Humberto.

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Jérémy Bernon
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Best Jérémy Bernon (jeremy-bernon-8) said : 		#1

Dear Humberto,

Cwz is not defined by default in Lilith.
You can simply define the likelihood (in the getL function of the Lilith examples) as a function of Cwz and Cz (and other couplings), and in the generation of the XML input file (usrXMLinput function in the examples) you assign Cwz*Cz for the WW coupling, and Cz for the ZZ coupling.

You can then obtain the 1D likelihood profile for Cwz using the iminuit function mnprofile as done in example CVCF_1dprofile.py.

Best,
Jérémy

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Humberto Reyes (hreyes) said : 		#2

Thanks Jérémy Bernon, that solved my question.