8-13 September 2013
Asilomar, California
US/Pacific timezone

Reactor Rate Modulation Analysis in Double Chooz

9 Sep 2013, 17:00
Asilomar, California

Asilomar, California

Asilomar Conference Grounds, 800 Asilomar Avenue, Pacific Grove, CA 93950-3704
Oral Neutrino Oscillations/ Neutrino Beam Physics Neutrino Oscillations/ Neutrino Beams I


Pau Novella (CNRS)


Among ongoing reactor-based experiments, Double Chooz is unique in obtaining data when the reactor cores are brought down for maintenance. These reactor-off data allow for a clean measurement of the backgrounds of the experiment, thus being of uppermost importance for the theta_13 oscillation analysis. While the oscillation results published by the collaboration in 2011 and 2012 rely on background models derived from reactor-on data, in this poster we present an independent study based on the handle provided by 7.53 days of reactor-off data. A global fit to both theta_13 and the total background is performed by analyzing the observed neutrino rate as a function of the non-oscillated expected rate for different reactor power conditions. The results presented in this work is fully consistent with the ones already published by Double Chooz, for both Gd and H capture analyses. As they yield almost the same precision, this work stands as a prove of the reliability of the background estimates and the oscillation analysis of the experiment.

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