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High Energy Physics Seminar

Monday, December 8, 2025
4:00pm to 5:00pm
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Online and In-Person Event
The Return of the Kaon
Yuval Grossman, Cornell University,

Kaon physics, and in particular the decay $K \to \mu^+ \mu^-$, has played a tremendous role in the history of flavor physics. Over the past few decades, the $B$-meson program has taken over as the main driving force behind progress in the field. We show that, despite the common perception that $K \to \mu^+ \mu^-$ suffers from large hadronic uncertainties, measuring $K_L - K_S$ interference effects can, in fact, provide a very clean extraction of the CKM CP-violation parameter $\eta$, with superb theoretical precision. We demonstrate how measuring these interference effects in next-generation Kaon experiments would serve as an independent and powerful test of the SM CKM structure.

The talk is in 469 Lauritsen.

Contact [email protected] for Zoom link.