La Trobada: Double Chooz Experiment and Preliminary theta_13 Result From 100 Days of Data Taking

por Kazuhiro Terao (MIT)

viernes 2 dic. 2011 11:30 → 12:30 Europe/Madrid

Sala Seminarios IFIC (Edf. Institutos de Investigación)

Double Chooz is a reactor anti-neutrino experiment looking for the last unknown neutrino mixing angle theta_13. The experiment uses two detectors at different baselines (400 m and 1 km) to precisely measure disappearance of electron antineutrinos from nearby Chooz reactor cores in Ardennes, France. Double Chooz has finished a far detector construction, and taken data since April 2011. This seminar covers basics of the experiment, the current status of data taking, and our preliminary result of θ_13 measurement. From 100 days of data from far detector, we found sin^2 2θ_13 = 0.085 ± 0.051 assuming the value of ∆m^2_31 = 2.4\times10^-3 eV^2.