19-21 September 2023
Europe/Berlin timezone

Dark Pions at Neutrino Facilities

Not scheduled
Nachrichtentechnik-Hörsaal (NTI) (KIT)

Nachrichtentechnik-Hörsaal (NTI)


Engesserstraße 5, 76131 Karlsruhe


Dr. Asli Abdullahi (Fermilab)


We present a chiral non-abelian dark sector model featuring a spontaneous $SU(3) \times SU(2) \rightarrow SU(3)$ symmetry breaking, resulting in the formation of dark mesons and baryons. The absence of a gauged $U(1)$ symmetry allows the dark baryons, typically the dark protons, to potentially serve as dark matter candidates. The model incorporates HNLs and explores scenarios with enhanced active-to-sterile neutrino mixing. We analyze the mixing between the dark meson $\pi_D$ and the SM mesons $\pi^0$ and $\eta$. Utilizing this mixing and the known $\pi^0$ flux at neutrino facilities, we investigate the decay of $\pi_D$ into pairs of HNLs. This study presents a novel approach where the $\nu_D$ emerges directly from the $\pi^0$ decay, providing distinct kinematic distributions compared to conventional neutrino mixing studies. Our investigation includes the DUNE and ICARUS near detectors, as well as stopped pion facilities and FASER$\nu$. Additionally, we consider the atmospheric $\pi^0$ flux for $\nu_D$ production, offering intriguing possibilities for the DUNE far detector.

Primary authors

Dr. Asli Abdullahi (Fermilab) Dr. Zahra Tabrizi (Northwestern University ) Prof. André de Gouvêa (Northwestern University ) Prof. Bhaskar Dutta (Texas A&M University ) Dr. Ian Shoemaker (Virginia Tech)

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