CERN Accelerating science

Article
Report number	arXiv:1912.01524 ; CERN-TH-2019-208
Title	A new analysis of the MiniBooNE low-energy excess
Author(s)	Giunti, C. (INFN, Turin) ; Ioannisian, A. (CERN ; Yerevan Phys. Inst. ; ITPM, Yerevan) ; Ranucci, G. (INFN, Milan)
Publication	2020
Imprint	2019-12-03
Number of pages	7
Note	7 pages. We corrected Table 2 and Figures 3 and 4, with respect to the version published in JHEP 11 (2020) 146
In:	JHEP 2011 (2020) pp.146
DOI	10.1007/JHEP11(2020)146 10.1007/JHEP02(2021)078 (Erratum)
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	We present the results of a new analysis of the data of the MiniBooNE experiment taking into account the additional background of photons from $\Delta^{+/0}$ decay proposed in arXiv:1909.08571 and additional contributions due to coherent photon emission, incoherent production of higher mass resonances, and incoherent non-resonant nucleon production. We show that the new background can explain part of the MiniBooNE low-energy excess and the statistical significance of the MiniBooNE indication in favor of short-baseline neutrino oscillation decreases from $5.1\sigma$ to $3.6\sigma$. We also consider the implications for short-baseline neutrino oscillations in the 3+1 active-sterile neutrino mixing framework. We show that the new analysis of the MiniBooNE data indicates smaller active-sterile neutrino mixing and may lead us towards a solution of the appearance-disappearance tension in the global fit of short-baseline neutrino oscillation data.
Copyright/License	preprint: (License: arXiv nonexclusive-distrib 1.0) publication: © The Authors (License: CC-BY-4.0), sponsored by SCOAP³

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