New Results from MiniBooNE Charged-Current Quasi-Elastic Anti-Neutrino Data

TL;DR

This paper compares MiniBooNE anti-neutrino CCQE data with models, finding a consistent $Q^{2}$ shape but a 20% higher normalization, and suggests the neutrino flux is about 20% lower than predicted.

Contribution

It provides new analysis of anti-neutrino CCQE data, revealing flux reduction and normalization discrepancies with models, using three independent background estimation techniques.

Findings

Neutrino flux is about 20% lower than predictions.

The $Q^{2}$ shape matches the model with $M_{A} = 1.35$ GeV.

Normalization of anti-neutrino data is approximately 20% higher than model predictions.

Abstract

MiniBooNE anti-neutrino charged-current quasi-elastic (CCQE) data is compared to model predictions. The main background of neutrino-induced events is examined first, where three independent techniques are employed. Results indicate the neutrino flux is consistent with a uniform reduction of $\sim$ 20% relative to the largely uncertain prediction. After background subtraction, the $Q^{2}$ shape of $\numub$ CCQE events is consistent with the model parameter $M_{A}$ = 1.35 GeV determined from MiniBooNE $\numu$ CCQE data, while the normalization is $\sim$ 20% high compared to the same prediction.