Improved measurements of the neutrino mixing angle θ13 with the Double Chooz detector

By Y. Abe, J. Anjos, J. Barrière, E. Baussan, I. Bekman, M. Bergevin, T. Bezerra, L. Bezrukov, E. Blucher, C. Buck and 137 more. 2014

275 citations recorded by the source corpus.

A bstractThe Double Chooz experiment presents improved measurements of the neutrino mixing angle θ13 using the data collected in 467.90 live days from a detector positioned at an average distance of 1050 m from two reactor cores at the Chooz nuclear power plant. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties with respect to previous publications, whereas the efficiency of the ν¯e$$ {\overline{\nu}}_e $$ signal has increased. The value of θ13 is measured to be sin2 2θ13 = 0.090− 0.029+ 0.032 from a fit to the observed energy spectrum. Deviations from the reactor ν¯e$$ {\overline{\nu}}_e $$ prediction observed above a prompt signal energy of 4 MeV and possible explanations are also reported. A consistent value of θ13 is obtained from a fit to the observed rate as a function of the reactor power independently of the spectrum shape and background estimation, demonstrating the robustness of the θ13 measurement despite the observed distortion.

Subfields: Nuclear and High Energy Physics, Radiation

View Paper: https://www.semanticscholar.org/paper/e09b83e3c864e4704aeaf298a9681f2bc41ef880

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

In Radiation

Citations in the corpus

Neutrino Oscillations and Non-standard Interactions (2017, methodology): “Modern reactor neutrino experiments, like Daya Bay, RENO and Double Chooz, provide a very accurate determination of the reactor mixing angle θ13 [73, 136, 137].”
Prospects for beyond the Standard Model physics searches at the Deep Underground Neutrino Experiment (2020, methodology): “set used, as well as the parameters to which they are sensitive, are (1) from solar neutrino data [104–113]: θ12, ∆m 2 21, and θ13; (2) from neutrino mode in LBL experiments K2K [114], MINOS [115,116], T2K [117,118], and NOνA [119, 120]: θ23, ∆m 2 31, and θ13; (3) from KamLAND reactor antineutrino d”
Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects (2018, background): “The latest frequentists global data analysis results in a preference for normal mass ordering with 1χ2 = 11.7 (∼ 3.4σ ), mostly arising from the combination of the longbaseline T2K and NOνA data with reactor experiments (Daya Bay, RENO and Double Chooz), plus the latest atmospheric neutrino results ”
Deep Underground Neutrino Experiment (DUNE), Far Detector Technical Design Report, Volume II: DUNE Physics (2020, methodology): “The complete data set used, as well as the parameters to which they are sensitive, are (1) from solar neutrino data [298, 413, 414, 415, 416, 417, 418, 419, 420, 421]: θ12, ∆m(2)21, and θ13; (2) from neutrino mode in long-baseline experiments K2K [422], MINOS [423, 424], T2K [425, 426], and NOνA [42”