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Smallness of matter effects in long-baseline muon neutrino disappearance
Current long-baseline accelerator experiments, NOvA and T2K, are making excellent measurements of neutrino oscillations and the next generation of experiments, DUNE and HK, will make measurements at the O ( 1 % ) level of precision. These measurements are a combination of the appearance channel which is more challenging experimentally but depends on many oscillation parameters, and the disappearance channel which is somewhat easier and allows for precision measurements of the atmospheric mass splitting and the atmospheric mixing angle. It is widely recognized that the matter effect plays a key role in the appearance probability, yet the effect on the disappearance probability is surprisingly small for these experiments. Here we investigate both exactly how small the effect is and show that it just begins to become relevant in the high statistics regime of DUNE. Published by the American Physical Society 2024
Search for Electron Antineutrino Appearance in a Long-Baseline Muon Antineutrino Beam
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eV-Scale Sterile Neutrino Search Using Eight Years of Atmospheric Muon Neutrino Data from the IceCube Neutrino Observatory
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Measurement of the Fluctuations in the Number of Muons in Extensive Air Showers with the Pierre Auger Observatory
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Dark Photon and Muon g − 2 Inspired Inelastic Dark Matter Models at the High-Energy Intensity Frontier
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Highly Enhanced Contributions of Heavy Higgs Bosons and New Leptons to Muon g − 2 and Prospects at Future Colliders
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Search for Long-Lived Particles Decaying in the CMS End Cap Muon Detectors in Proton-Proton Collisions at s = 13 TeV
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Simplest and Most Predictive Model of Muon g − 2 and Thermal Dark Matter
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First Measurement of Energy-Dependent Inclusive Muon Neutrino Charged-Current Cross Sections on Argon with the MicroBooNE Detector
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Correlating W -Boson Mass Shift with Muon g − 2 in the Two Higgs Doublet Model
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Probing New Gauge Forces with a High-Energy Muon Beam Dump
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Simultaneous Measurement of ν μ Quasielasticlike Cross Sections on CH, C, H 2 O , Fe, and Pb as a Function of Muon Kinematics at MINERvA
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Search for an Invisible Z ' in a Final State with Two Muons and Missing Energy at Belle II
The $L_μ – L_τ$ extension of the standard model predicts the existence of a lepton-flavor-universality-violating Z' boson that couples only to the heavier lepton families. We search for such a Z' through its invisible decay in the process $e^+e^– → μ^+μ^–$Z'. We use a sample of electron-positron collisions at a center- of-mass energy of 10.58 GeV collected by the Belle II experiment in 2019-2020, corresponding to an integrated luminosity of 79.7 fb –1 . We find no excess over the expected standard-model background. We set 90%-confidence-level upper limits on the cross section for this process as well as on the coupling of the model, which ranges from 3 × 10 –3 at low Z' masses to 1 at Z' masses of 8 GeV=$c^2$.
First Measurement of Quasielastic Λ Baryon Production in Muon Antineutrino Interactions in the MicroBooNE Detector
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Simultaneous Measurement of Muon Neutrino ν μ Charged-Current Single π + Production in CH, C, H 2 O , Fe, and Pb Targets in MINERvA
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