implement Kaon mixing using u-t unitarity

flav-io / flavio

A Python package for flavour physics phenomenology in the Standard model and beyond

http://flav-io.github.io/

MIT License

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implement Kaon mixing using u-t unitarity #240

Closed peterstangl closed 9 months ago

peterstangl commented 9 months ago

Implementation based on arXiv:1911.06822 using u-t unitarity for the Kaon mixing M12 amplitude. The new K mixing unitarity entry in config.yml allows changing back to the old implementation based on c-t unitarity. Fixes issue #182.

peterstangl commented 9 months ago

Not included in the implementation yet are:

Two-loop Electroweak Corrections to the Top-Quark Contribution arXiv:2108.00017
Electroweak Corrections to the Charm-Top-Quark Contribution arXiv:2207.07669
Power corrections from dimension-8 operators arXiv:2111.05153

(they are all 1% effects)

To keep track of this, the new issue #243 has been created.