The NOvA collaboration has constructed a 14,000 ton, fine-grained, low-Z, total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI neutrino beam. This detector, with its ...excellent granularity and energy resolution and relatively low-energy neutrino thresholds, was designed to observe electron neutrino appearance in a muon neutrino beam, but it also has unique capabilities suitable for more exotic efforts. In fact, if an efficient upward- going muon trigger with sufficient cosmic ray background rejection can be demonstrated, NOvA will be capable of a competitive indirect dark matter search for low-mass WIMPs. The cosmic ray muon rate at the NOvA far detector is about 100 kHz and provides the primary challenge for triggering and optimizing such a search analysis. The status of the NOvA upward-going muon trigger is presented.
The NO$\nu$A collaboration has constructed a 14,000 ton, fine-grained, low-Z,
total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI
neutrino beam. This detector, with its ...excellent granularity and energy
resolution and relatively low-energy neutrino thresholds, was designed to
observe electron neutrino appearance in a muon neutrino beam, but it also has
unique capabilities suitable for more exotic efforts. In fact, if sufficient
cosmic ray background rejection can be demonstrated, NO$\nu$A will be capable
of a competitive indirect dark matter search for low-mass Weakly-Interacting
Massive Particles (WIMPs). The cosmic ray muon rate at the NO$\nu$A far
detector is approximately 100 kHz and provides the primary challenge for
triggering and optimizing such a search analysis. The status of the NO$\nu$A
upward-going muon trigger and a first look at the triggered sample is
presented.
The NO$\nu$A collaboration has constructed a 14,000 ton, fine-grained, low-Z,
total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI
neutrino beam. This detector, with its ...excellent granularity and energy
resolution and relatively low-energy neutrino thresholds, was designed to
observe electron neutrino appearance in a muon neutrino beam, but it also has
unique capabilities suitable for more exotic efforts. In fact, if an efficient
upward-going muon trigger with sufficient cosmic ray background rejection can
be demonstrated, NO$\nu$A will be capable of a competitive indirect dark matter
search for low-mass WIMPs. The cosmic ray muon rate at the NO$\nu$A far
detector is about 100 kHz and provides the primary challenge for triggering and
optimizing such a search analysis. The status of the NO$\nu$A upward-going muon
trigger is presented.
The NO\(\nu\)A collaboration has constructed a 14,000 ton, fine-grained, low-Z, total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI neutrino beam. This detector, with its ...excellent granularity and energy resolution and relatively low-energy neutrino thresholds, was designed to observe electron neutrino appearance in a muon neutrino beam, but it also has unique capabilities suitable for more exotic efforts. In fact, if sufficient cosmic ray background rejection can be demonstrated, NO\(\nu\)A will be capable of a competitive indirect dark matter search for low-mass Weakly-Interacting Massive Particles (WIMPs). The cosmic ray muon rate at the NO\(\nu\)A far detector is approximately 100 kHz and provides the primary challenge for triggering and optimizing such a search analysis. The status of the NO\(\nu\)A upward-going muon trigger and a first look at the triggered sample is presented.
The NO\(\nu\)A collaboration has constructed a 14,000 ton, fine-grained, low-Z, total absorption tracking calorimeter at an off-axis angle to an upgraded NuMI neutrino beam. This detector, with its ...excellent granularity and energy resolution and relatively low-energy neutrino thresholds, was designed to observe electron neutrino appearance in a muon neutrino beam, but it also has unique capabilities suitable for more exotic efforts. In fact, if an efficient upward-going muon trigger with sufficient cosmic ray background rejection can be demonstrated, NO\(\nu\)A will be capable of a competitive indirect dark matter search for low-mass WIMPs. The cosmic ray muon rate at the NO\(\nu\)A far detector is about 100 kHz and provides the primary challenge for triggering and optimizing such a search analysis. The status of the NO\(\nu\)A upward-going muon trigger is presented.
This Letter reports new results on muon neutrino disappearance from NOvA, using a 14 kton detector equivalent exposure of $6.05\times10^{20}$ protons-on-target from the NuMI beam at the Fermi ...National Accelerator Laboratory. The measurement probes the muon-tau symmetry hypothesis that requires maximal mixing ($\theta_{23} = \pi/4$). Assuming the normal mass hierarchy, we find $\Delta m^2 = (2.67 \pm 0.11)\times 10^{-3}$ eV$^2$ and $\sin^2 \theta_{23}$ at the two statistically degenerate values $0.404^{+0.030}_{-0.022}$ and $0.624^{+0.022}_{-0.030}$, both at the 68% confidence level. Finally, our data disfavor the maximal mixing scenario with 2.6 $\sigma$ significance.
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