Abstract
We present the first measurement of the single-differential $\nu_e + \bar{\nu}_e$ charged-current inclusive cross sections on argon in electron or positron energy and in electron or positron scattering cosine over the full angular range. Data were collected using the MicroBooNE liquid argon time projection chamber located off-axis from the Fermilab Neutrinos at the Main Injector beam over an exposure of $2.0\times10^{20}$ protons on target. The signal definition includes a 60 MeV threshold on the $\nu_e$ or $\bar{\nu}_e$ energy and a 120 MeV threshold on the electron or positron energy. The measured total and differential cross sections are found to be in agreement with the GENIE, NuWro, and GiBUU neutrino generators.
Highlights
We present the first measurement of the single-differential νe þ νe charged-current inclusive cross sections on argon in electron or positron energy and in electron or positron scattering angle over the full range
Data were collected using the MicroBooNE liquid argon time projection chamber located off axis from the Fermilab neutrinos at the main injector beam over an exposure of 2.0 × 1020 protons on target
We present a measurement of the νe þ νe charged current (CC) inclusive cross section on argon at the MicroBooNE experiment
Summary
The contributions from each of the neutrino and antineutrino components are averaged according to their respective fluxes This is the first demonstration of electron energy reconstruction from νe or νe CC interactions in argon in the ∼1 GeV energy range. The NuMI neutrino flux at MicroBooNE contains a ∼2% component of νe and νe with energies ranging from tens of MeV to ∼10 GeV at this off-axis angle. The energy depositions from charged particles are processed with a dedicated series of algorithms, starting with simulation of long-range electronic signals induced on the TPC anode wires by drifting ionization electrons [25,26]. The main backgrounds in this analysis are (i) CRs in time with the beam spill (estimated to be 8.3% of all selected events), (ii) neutral current interactions containing a π0 (7.0%), and (iii) charged current νμ or νμ interactions with a π0 in the final state (4.2%).
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