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DTSTART:20260329T010000
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DTSTART;TZID=Europe/Rome:20260630T140000
DTEND;TZID=Europe/Rome:20260630T160000
DTSTAMP:20260818T025004
CREATED:20260629T130656Z
LAST-MODIFIED:20260629T130656Z
UID:41039-1782828000-1782835200@w3.lnf.infn.it
SUMMARY:Oscillating Imprints of Dark Matter in Mesons Decays
DESCRIPTION:Speaker: Prisco Lo Chiatto (Max Planck Für Physik\, Weizmann Institute of Science) \nWe study scenarios in which ultralight dark matter (ULDM) causes oscillations of the Cabibbo–Kobayashi—Maskawa (CKM) matrix elements\, considering two frameworks. The first\, previously proposed in the literature\, employs the Nelson–Barr mechanism to solve the strong CP problem and the CKM phase is identified with a pseudo-Nambu– Goldstone boson. The second\, inspired by Froggatt–Nielsen flavor models\, relies on quadratic couplings of the ULDM to the Standard Model while naturally suppressing linear couplings. On the experimental side\, we outline a strategy to search for such oscillations at flavor factories using meson decays\, focusing on the NA62 experiment as the most promising candidate for discovery thanks to its large kaon statistics. We show that the sensitivity of lifetime-based observables is parametrically degraded when the total particle flux is not known exactly\, leading to a substantial loss of sensitivity compared to naive estimates. We therefore advocate alternative observables based on direct counting of events\, which retain the expected 1/N1/N scaling and provide a robust probe of oscillating CKM elements. Our results highlight flavor experiments as a novel probe of ULDM through time-dependent signatures.
URL:/event/oscillating-imprints-of-dark-matter-in-mesons-decays/
LOCATION:Aula Seminari\, Via Enrico Fermi\, 40\, Frascati\, Roma\, 00044\, Italia
CATEGORIES:Seminari teorici
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