Search for Invisible Decays of Sub-GeV Dark Photons in Missing-Energy Events at the CERN SPS

NA64 Collaboration

Resultado de la investigación: Contribución a una revistaArtículo

Resumen

We report on a direct search for sub-GeV dark photons (A′), which might be produced in the reaction e-Z→e-ZA′ via kinetic mixing with photons by 100 GeV electrons incident on an active target in the NA64 experiment at the CERN SPS. The dark photons would decay invisibly into dark matter particles resulting in events with large missing energy. No evidence for such decays was found with 2.75×109 electrons on target. We set new limits on the γ-A′ mixing strength and exclude the invisible A′ with a mass 100 MeV as an explanation of the muon gμ-2 anomaly.

Idioma originalInglés
Número de artículo011802
PublicaciónPhysical Review Letters
Volumen118
N.º1
DOI
EstadoPublicada - 5 ene 2017

Áreas temáticas de ASJC Scopus

  • Física y astronomía (todo)

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