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Joachim Brod (University of Cincinnati)

Date: Tue. November 17th, 2020, 11:30 am-12:30 pm

Precision Standard-Model Prediction of epsilon_K

The parameter epsilon_K describes CP violation in the neutral kaon
system and is one of the most sensitive probes of new physics. The large
uncertainties related to the charm-quark contribution to epsilon_K have
so far prevented a reliable standard-model prediction. In this talk, I
will review mixing in the neutral kaon system, and then show that CKM
unitarity suggests a unique form of the weak effective Hamiltonian in
which the short-distance theory uncertainty of the imaginary part is
dramatically reduced. The uncertainty related to the charm-quark
contribution is now at the percent level. I will conclude with an
outlook on further calculations that have the potential to render
epsilonK a precision observable on par with the rare kaon decays.

Zoom meeting ID:  999 3023 4812
For the password to access the meeting please contact one of us:
Kurt Hinterbichler: kjh92
Alexis Plascencia: adp110
Ellen Rabe: exr223
Idit Zehavi: ixz6

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