PT Journal
AU Cañas, BC
   Garces, EA
   Miranda, OG
   Tortola, M
   Valle, JWF
TI The weak mixing angle from low energy neutrino measurements: A global update
SO Physics Letters B
JI Phys. Lett. B
PY 2016
BP 450
EP 455
VL 761
DI 10.1016/j.physletb.2016.08.047
LA English
AB 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 +/- 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 +/- 0.024.
ER