Measurement of ${\bar{\nu }}_{\mu }$ and ${\nu }_{\mu }$ charged current inclusive cross sections and their ratio with the T2K off-axis near detector

Abstract

We report a measurement of cross section $\sigma ({\nu }_{\mu }+\mathrm{nucleus}\to {\mu }^{-}+X)$ and the first measurements of the cross section $\sigma ({\bar{\nu }}_{\mu }+\mathrm{nucleus}\to {\mu }^{+}+X)$ and their ratio $R(\frac{\sigma (\bar{\nu })}{\sigma (\nu )})$ at (anti-)neutrino energies below 1.5 GeV. We determine the single momentum bin cross section measurements, averaged over the T2K $\bar{\nu }/\nu$-flux, for the detector target material (mainly Carbon, Oxygen, Hydrogen and Copper) with phase space restricted laboratory frame kinematics of ${\theta }_{\mu }<32^{\circ }$ and $p_{\mu }>$500 MeV/c. The results are $\sigma (\bar{\nu })=\left(0.900\pm 0.029(stat.)\pm 0.088(syst.)\right)\times 10^{-39}$ and $\sigma (\nu )=\left(2.41\pm 0.022(stat.)\pm 0.231(syst.)\right)\times 10^{-39}$ in units of cm${}^2$/nucleon and $R\left(\frac{\sigma (\bar{\nu })}{\sigma (\nu )}\right)=0.373\pm 0.012(stat.)\pm 0.015(syst.)$.

arXiv comment18 pages, 8 figures

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• Measurement of neutrino and antineutrino neutral-current quasielastic-like interactions on oxygen by detecting nuclear de-excitation $\gamma$-rays
• Progress in measurements of 0.1--10 GeV neutrino-nucleus scattering and anticipated results from future experiments
• Measurement of the Double-Differential Muon-neutrino Charged-Current Inclusive Cross Section in the NOvA Near Detector
• First Measurement of the Charged Current ${\overline{\nu }}_{\mu }$ Double Differential Cross Section on a Water Target without Pions in the final state
• Measuring Oscillations with A Million Atmospheric Neutrinos
• Towards a Unified Model of Neutrino-Nucleus Interactions