Bulletin of the American Physical Society
Fall 2022 Meeting of the APS Division of Nuclear Physics
Volume 67, Number 17
Thursday–Sunday, October 27–30, 2022; Time Zone: Central Daylight Time, USA; New Orleans, Louisiana
Session KJ: Mini-Symposium: Light Meson Decays II
10:30 AM–12:06 PM,
Saturday, October 29, 2022
Hyatt Regency Hotel
Room: Imperial 11
Chair: Susan Schadmand, GSI Helmholtzzentrum fur Schwerionenfors
Abstract: KJ.00003 : CP-violating new physics in η decays: implications from the SMEFT
11:18 AM–11:30 AM
Presenter:
Pablo Sanchez-Puertas
(IFAE)
Author:
Pablo Sanchez-Puertas
(IFAE)
A natural candidate to drive such searches are the η and η' mesons, especially with the envisaged eta factories.
Notwithstanding, such processes are expected to be highly-constrained by CP-violating observables such as EDMs, and theoretical calculations estimating the required statistics to overcome them are necessary.
In this work, we derive bounds using the SMEFT to parametrize new physics and focus on different leptonic and semileptonic eta decays. Among these, polarization signatures in eta --> mu+mu- decays are a viable candidate.
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