A preliminary charged current muon neutrino pionless event selection in SBND

SBND is a Liquid Argon Time Projection Chamber (LArTPC) experiment and the
near detector in the Short Baseline Neutrino (SBN) program at Fermilab. With a
110 m baseline and a 112 tonne active mass, the detector will observe ∼5,000,000
muon neutrino charged current (ν_μ CC) interactions at energies of < E_ν >∼ 650
MeV in its 6.6 ×10²⁰ POT (3 year) exposure. SBND will constrain the systematics
on the event rate for sterile neutrino searches in the SBN program and have a rich
program of neutrino cross-section measurements.
The most abundant topology in SBND, pionless muon neutrino charged current
(ν_μ CC 0π), is a key channel for oscillation searches due to its simple final-state: a
single muon, possibly several nucleons and no meson. However, the well-understood
charged current quasielastic (CCQE) interaction on free nuclei is not sufficient to
correctly model the ν_μ CC 0π final state in nuclear target experiments. This talk
will demonstrate a preliminary ν_μ CC 0π selection using automated reconstruction
in SBND, in an effort to fully understand its properties in a LArTPC for the purpose
of making cross-section and oscillation measurements.