First Measurement of Triple-Differential Inclusive $\nu_{\mu}$-CC Cross Section at MicroBooNE

• Nitish Nayak (BNL)
• Bannanje Nitish Nayak (University of California Irvine (US))

Room: Graduate Building D-122 We report the first measurement of the energy-dependent differential cross section $d^{2}\sigma (E_{\nu})/ dcos(\theta_{\mu}) dP_{\mu}$ for inclusive $\nu_{\mu}$-CC scattering on Ar40 using data collected from the MicroBooNE experiment based on an exposure of 6.5$\times10^{20}$ POT. MicroBooNE is a liquid argon time projection chamber (LArTPC) located along the Fermilab Booster Neutrino Beam with a mean neutrino energy of approximately 0.8~GeV. The neutrino interactions are reconstructed using the WireCell paradigm leveraging the mm level spatial resolutions of the LArTPC to provide a detailed description of the interaction in the detector. We also utilize a novel conditional constraint procedure, first introduced in our previous MicroBooNE energy-dependent single-differential cross-section measurement, to validate the hadronic model. In particular we show that the mapping from reconstructed hadronic energy to the true hadronic energy is modeled within uncertainties, thus allowing us to extract a differential cross section over muon kinematics in multiple neutrino energy bins separately. Building upon the previous single-differential result, this measurement covers an extensive phase space, providing a wealth of information useful for future LArTPC experiments measuring neutrino oscillations. Comparisons against a number of commonly used model predictions are also included and their performance in different parts of the available phase-space is discussed.