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wilson-eft / wilson

A Python package for the running and matching of Wilson coefficients above and below the electroweak scale
https://wilson-eft.github.io
MIT License
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Definition of Bern basis #70

Closed sbruggisser closed 3 years ago

sbruggisser commented 3 years ago

Dear Wilson Team,

@dvandyk and myself are matching the SMEFT onto the WET in the Bern basis and we found a discrepancy between the definition of the Bern basis in the WCXF convention and the implementation in the /translate/wet.py implementation. In the WCXF convention files the four-fermion operators in the Bern basis are defined with a factor of 4GF/\sqrt{2} whereas in the JMS basis they are defined without this factor. In the /translate/wet.py implementation of _JMS_to_Bern_I no such factor appears, and neither does it in _Bern_to_JMS_I.

Best, Seb

sbruggisser commented 3 years ago

Sorry, found the corresponding implementation.