A Joint Multi-Detector Differential Charged Current ν_μ-Argon and ν_μ-Oxygen Cross Section Extraction without Pions in the Final State at MicroBooNE and ANNIE

Neutrino oscillation experiments use cross-section measurements to predict neutrino interaction rates. Uncertainties in these cross sections directly affect the uncertainties in measured neutrino properties, such as the PMNS parameters that constrain neutrino oscillation, and also impact the reduction of atmospheric neutrino backgrounds in searches for diffuse supernova neutrinos and proton decay. The Booster Neutrino Beam (BNB) at Fermilab provides a unique opportunity to study neutrino interactions using on-axis detectors with different target materials. The MicroBooNE and ANNIE physics programs aim to elucidate neutrino interactions with argon and oxygen nuclei, respectively through cross-section measurements, thereby refining interaction models and reducing associated uncertainties. This setup provides an opportunity for a joint multi-detector cross-section extraction analysis, where joint flux and model correlations can be taken into account. We present the status of the joint ANNIE and MicroBooNE single differential charged current (CC) cross-section measurement with zero pions in the final state (CC-0π), as a function of muon momentum 0.6 < p_μ [GeV/c] < 1.2