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High Energy Physics - Experiment

arXiv:1502.07715 (hep-ex)
[Submitted on 26 Feb 2015 (v1), last revised 3 Jul 2015 (this version, v2)]

Title:First MINOS+ Data and New Results from MINOS

Authors:Alexandre Sousa (for the MINOS and MINOS+ Collaborations)
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Abstract:Following a 7-year run with the MINOS experiment from 2005 to 2012, the MINOS+ long-baseline neutrino experiment started operations in September 2013. Utilizing the MINOS Near and Far Detectors at Fermilab and northern Minnesota, respectively, and measuring the new medium-energy NuMI neutrino beam over baseline of 735 km, MINOS+ has accumulated an exposure of $1.7\times 10^{20}$ protons-on-target. In this paper, we present preliminary results from the MINOS+run. In addition, we report on improved results from a three-neutrino flavor analysis of the full $14\times 10^{20}$ MINOS-era beam sample, and the combined full MINOS and MINOS+ atmospheric neutrino samples, corresponding to an exposure of 48.7 kiloton-years increased by 28% with respect to previously published MINOS measurements. The analysis combines the measurements of muon neutrino disappearance and appearance into electron neutrinos in the beam and atmospheric samples. Furthermore, we present results from a new search for sterile neutrinos in the complete MINOS NuMI sample. A 3+1 neutrino mixing model with one sterile neutrino is assumed. Neutrino mixing at the ND baseline ($\sim 1$ km), relevant for values of the additional mass eigenstate $m_4\gtrsim 1$ eV, is included for the first time in the analysis of Far and Near Detector data from a long-baseline neutrino experiment. Finally, new limits on non-standard neutrino interactions are obtained from measurements of electron neutrino appearance in the full MINOS beam sample.
Comments: 9 pages, 11 figures, Submitted to Proceedings of the Neutrino 2014 Conference, Boston, MA, AIP Conference Proceedings
Subjects: High Energy Physics - Experiment (hep-ex)
Cite as: arXiv:1502.07715 [hep-ex]
  (or arXiv:1502.07715v2 [hep-ex] for this version)
  https://doi.org/10.48550/arXiv.1502.07715

Submission history

From: Alexandre Sousa [view email]
[v1] Thu, 26 Feb 2015 20:24:33 UTC (6,100 KB)
[v2] Fri, 3 Jul 2015 04:27:24 UTC (6,214 KB)
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