CombiningCPT-conjugate neutrino channels at Fermilab

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Abstract

We explore an alternative strategy to determine the neutrino mass hierarchy by making use of possible future neutrino facilities at Fermilab. Here, we use $CPT$-conjugate neutrino channels, exploiting a ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ beam from the NuMI beamline and a ${\overline{\ensuremath{\nu}}}_{e}$ beam from a beta-beam experimental setup. Both experiments are performed at approximately the same $⟨E⟩/L$. We present different possible accelerator scenarios for the beta-beam neutrino setup and fluxes. This $CPT$-conjugate neutrino channel scenario can extract the neutrino mass hierarchy down to ${sin}^{2}2{\ensuremath{\theta}}_{13}\ensuremath{\approx}0.02$.

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