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RESEARCH PRODUCT
The weak mixing angle from low energy neutrino measurements: A global update
B.c. CañasO. G. MirandaE. A. GarcésMariam TórtolaJosé W. F. Vallesubject
ImaginationNuclear and High Energy Physicsmedia_common.quotation_subjectFOS: Physical sciences01 natural sciencesHigh Energy Physics - ExperimentPhysics::GeophysicsNuclear physicsHigh Energy Physics - Experiment (hep-ex)Cross section (physics)High Energy Physics - Phenomenology (hep-ph)Low energy0103 physical sciencesRadiative transfer010306 general physicsMixing (physics)media_commonPhysics010308 nuclear & particles physicsScatteringWeinberg anglelcsh:QC1-999High Energy Physics - PhenomenologyHigh Energy Physics::ExperimentNeutrinolcsh:Physicsdescription
Taking into account recent theoretical and experimental inputs on reactor fluxes we reconsider the determination of the weak mixing angle from low energy experiments. We perform a global analysis to all available neutrino-electron scattering data from reactor antineutrino experiments, obtaining sin^2(theta_W) = 0.252 \pm 0.030. We discuss the impact of the new theoretical prediction for the neutrino spectrum, the new measurement of the reactor antineutrino spectrum by the Daya Bay collaboration, as well as the effect of radiative corrections. We also reanalyze the measurements of the nu_e-e cross section at accelerator experiments including radiative corrections. By combining reactor and accelerator data we obtain an improved determination for the weak mixing angle, sin^2(theta_W) = 0.254 \pm 0.024.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-10-01 | Physics Letters B |