Single neutral pion production by charged-current $\bar{\nu}_\mu$ interactions on hydrocarbon at $\langle E_\nu \rangle = $ 3.6 GeV

The MINERvA collaboration Le, T. ; Palomino, J.L. ; Aliaga, L. ; et al.
Phys.Lett.B 749 (2015) 130-136, 2015.
Inspire Record 1351216 DOI 10.17182/hepdata.73317

Single neutral pion production via muon antineutrino charged-current interactions in plastic scintillator (CH) is studied using the \minerva detector exposed to the NuMI low-energy, wideband antineutrino beam at Fermilab. Measurement of this process constrains models of neutral pion production in nuclei, which is important because the neutral-current analog is a background for $\bar{\nu}_e$ appearance oscillation experiments. The differential cross sections for $\pi^0$ momentum and production angle, for events with a single observed $\pi^0$ and no charged pions, are presented and compared to model predictions. These results comprise the first measurement of the $\pi^0$ kinematics for this process.

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Measurement of electron neutrino quasielastic and quasielastic-like scattering on hydrocarbon at $\langle E_{\nu} \rangle $ = 3.6 GeV

The MINERvA collaboration Wolcott, J. ; Aliaga, L. ; Altinok, O. ; et al.
Phys.Rev.Lett. 116 (2016) 081802, 2016.
Inspire Record 1393997 DOI 10.17182/hepdata.75538

The first direct measurement of electron-neutrino quasielastic and quasielastic-like scattering on hydrocarbon in the few-GeV region of incident neutrino energy has been carried out using the MINERvA detector in the NuMI beam at Fermilab. The flux-integrated differential cross sections in electron production angle, electron energy and $Q^{2}$ are presented. The ratio of the quasielastic, flux-integrated differential cross section in $Q^{2}$ for $\nu_{e}$ with that of similarly-selected $\nu_{\mu}$-induced events from the same exposure is used to probe assumptions that underpin conventional treatments of charged-current $\nu_{e}$ interactions used by long-baseline neutrino oscillation experiments. The data are found to be consistent with lepton universality and are well-described by the predictions of the neutrino event generator GENIE.

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