Thursday, July 23, 2015, 3:00 pm — Small Seminar Room, Bldg. 510
Beginning in 2011, the Double Chooz experiment has produced increasingly precise measurements of the neutrino oscillation parameter sin22θ13. These measurements rely on the detection of reactor antineutrinos through the inverse beta decay (IBD) interaction. The most recent analysis uses IBD interactions followed by neutron capture on hydrogen, rather than the standard Gd capture channel. A new artificial neural network-based signal selection, novel background rejection techniques, and reduced detection systematics make this analysis far more sensitive than the original H-channel measurement in Double Chooz. The precision of this new sin22θ13 measurement approaches that of the Gd-channel measurement, demonstrating the possibility of performing high-sensitivity physics measurements without a Gd dopant.
Hosted by: Elizabeth Worcester
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