pith. sign in

arxiv: 1805.12028 · v2 · pith:WG5VBDM5new · submitted 2018-05-30 · ✦ hep-ex · hep-ph

Significant Excess of ElectronLike Events in the MiniBooNE Short-Baseline Neutrino Experiment

MiniBooNE collaboration , A. A. Aguilar-Arevalo , B. C. Brown , L. Bugel , G. Cheng , J. M. Conrad , R. L. Cooper , R. Dharmapalan
show 40 more authors
A. Diaz Z. Djurcic D. A. Finley R. Ford F. G. Garcia G. T. Garvey J. Grange E.-C. Huang W. Huelsnitz C. Ignarra R. A. Johnson G. Karagiorgi T. Katori T. Kobilarcik W. C. Louis C. Mariani W. Marsh G. B. Mills J. Mirabal J. Monroe C. D. Moore J. Mousseau P. Nienaber J. Nowak B. Osmanov Z. Pavlovic D. Perevalov H. Ray B. P. Roe A. D. Russell M. H. Shaevitz J. Spitz I. Stancu R. Tayloe R. T. Thornton M. Tzanov R. G. Van de Water D. H. White D. A. Wickremasinghe E. D. Zimmerman
This is my paper
classification ✦ hep-ex hep-ph
keywords dataexcessneutrinoeventsminibooneoscillationsigmatimes
0
0 comments X
read the original abstract

The MiniBooNE experiment at Fermilab reports results from an analysis of $\nu_e$ appearance data from $12.84 \times 10^{20}$ protons on target in neutrino mode, an increase of approximately a factor of two over previously reported results. A $\nu_e$ charged-current quasielastic event excess of $381.2 \pm 85.2$ events ($4.5 \sigma$) is observed in the energy range $200<E_\nu^{QE}<1250$~MeV. Combining these data with the $\bar \nu_e$ appearance data from $11.27 \times 10^{20}$ protons on target in antineutrino mode, a total $\nu_e$ plus $\bar \nu_e$ charged-current quasielastic event excess of $460.5 \pm 99.0$ events ($4.7 \sigma$) is observed. If interpreted in a two-neutrino oscillation model, ${\nu}_{\mu} \rightarrow {\nu}_e$, the best oscillation fit to the excess has a probability of $21.1\%$, while the background-only fit has a $\chi^2$ probability of $6 \times 10^{-7}$ relative to the best fit. The MiniBooNE data are consistent in energy and magnitude with the excess of events reported by the Liquid Scintillator Neutrino Detector (LSND), and the significance of the combined LSND and MiniBooNE excesses is $6.0 \sigma$. A two-neutrino oscillation interpretation of the data would require at least four neutrino types and indicate physics beyond the three neutrino paradigm.Although the data are fit with a two-neutrino oscillation model, other models may provide better fits to the data.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The DAMSA Experiment

    hep-ex 2026-04 unverdicted novelty 6.0

    DAMSA proposes an ultra-short baseline accelerator experiment to detect short-lived dark sector messengers by overcoming the sensitivity ceiling of longer-baseline beam dump experiments through a compact detector design.

  2. Beam-Dump Ceiling and Its Experimental Implication: The Case of a Portable Experiment

    hep-ph 2024-01 unverdicted novelty 6.0

    Beam-dump experiments for visibly decaying mediators hit an intrinsic sensitivity ceiling in the prompt-decay region that cannot be overcome by more data or better backgrounds, favoring compact portable setups.

  3. Planck 2018 results. VI. Cosmological parameters

    astro-ph.CO 2018-07 accept novelty 5.0

    Final Planck CMB data confirms the flat 6-parameter ΛCDM model with Ω_c h² = 0.120 ± 0.001, Ω_b h² = 0.0224 ± 0.0001, n_s = 0.965 ± 0.004, τ = 0.054 ± 0.007, H_0 = 67.4 ± 0.5 km/s/Mpc, and no strong evidence for extensions.

  4. In the Realm of the Hubble tension $-$ a Review of Solutions

    astro-ph.CO 2021-03 unverdicted novelty 2.0

    A review summarizing the Hubble constant tension and proposed solutions from new physics that restore agreement between Planck CMB data and local H0 measurements within 1-2 sigma.

  5. Neutrino Masses from the Point of View of Economy and Simplicity

    hep-ph 2019-07 unverdicted novelty 2.0

    Neutrino masses are unlikely to share the Standard Model origin of other fermion masses, with the Weinberg effective Lagrangian providing the simplest beyond-Standard-Model mechanism for small Majorana masses.