SoLid: Search for Oscillations with Lithium-6 Detector at the SCK-CEN BR2 reactor
NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS 273 (2016) 2690-2692
Measurement of muon antineutrino oscillations with an accelerator-produced off-axis beam.
Physical Review Letters American Physical Society 116:18 (2016) 181801
Abstract:
T2K reports its first measurements of the parameters governing the disappearance of ν¯μ in an off-axis beam due to flavor change induced by neutrino oscillations. The quasimonochromatic ν¯μ beam, produced with a peak energy of 0.6 GeV at J-PARC, is observed at the far detector Super-Kamiokande, 295 km away, where the ν¯μ survival probability is expected to be minimal. Using a data set corresponding to 4.01×1020 protons on target, 34 fully contained μ-like events were observed. The best-fit oscillation parameters are sin2(θ¯23)=0.45 and |Δm¯232|=2.51×10−3 eV2 with 68% confidence intervals of 0.38–0.64 and 2.26–2.80×10−3 eV2, respectively. These results are in agreement with existing antineutrino parameter measurements and also with the νμ disappearance parameters measured by T2K.First measurement of electron neutrino appearance in NOvA
Physical Review Letters American Physical Society 116:15 (2016) 151806
Abstract:
We report results from the first search for νμ → νe transitions by the NOvA experiment. In an exposure equivalent to 2.74×10^20 protons on target in the upgraded NuMI beam at Fermilab, we observe 6 events in the Far Detector, compared to a background expectation of 0.99±0.11(syst) events based on the Near Detector measurement. A secondary analysis observes 11 events with a background of 1.07±0.14(syst). The 3.3σ excess of events observed in the primary analysis disfavors 0.1π < δCP > 0.5π in the inverted mass hierarchy at the 90% C.L.Measurement of the muon neutrino inclusive charged-current cross section in the energy range of 1–3 GeV with the T2K INGRID detector
Physical Review D American Physical Society 93:7 (2016) 072002
Abstract:
We report a measurement of the νμ-nucleus inclusive charged-current cross section (=σcc) on iron using data from the INGRID detector exposed to the J-PARC neutrino beam. The detector consists of 14 modules in total, which are spread over a range of off-axis angles from 0° to 1.1°. The variation in the neutrino energy spectrum as a function of the off-axis angle, combined with event topology information, is used to calculate this cross section as a function of neutrino energy. The cross section is measured to be σcc(1.1 GeV)=1.10±0.15 (10-38 cm2/nucleon), σcc(2.0 GeV)=2.07±0.27 (10-38 cm2/nucleon), and σcc(3.3 GeV)=2.29±0.45 (10-38 cm2/nucleon), at energies of 1.1, 2.0, and 3.3 GeV, respectively. These results are consistent with the cross section calculated by the neutrino interaction generators currently used by T2K. More importantly, the method described here opens up a new way to determine the energy dependence of neutrino-nucleus cross sections.Measurement of the multiple-muon charge ratio in the MINOS Far Detector
PHYSICAL REVIEW D 93:5 (2016) ARTN 052017