Recent Results From The Daya Bay Experiment.

Authors :: Chao Zhang
Source :: AIP Conference Proceedings; 2015, Vol. 1666, p1-7, 7p, 4 Graphs
Publication Year :: 2015
Abstract: The Daya Bay reactor neutrino experiment has observed the disappearance of electron antineutrinos from nuclear reactors at ~kilometer baselines. The relative measurement of the ...<subscript>e</subscript> rate and spectrum between near and far detectors allows for a precision measurement of the oscillation parameters sin²2θ<subscript>13</subscript> and |Δm²<subscript>ee</subscript>|. Two new antineutrino detectors (ADs) were installed in summer 2012, bringing the experiment to the final 8-AD configuration. With 621 days of data, Daya Bay has measured sin² 2θ<subscript>13</subscript> = 0.084±0.005 and |Δm²<subscript>ee</subscript>| = 2.44<superscript>+0.10</superscript><subscript>-0.11</subscript> × 10<superscript>-3</superscript> eV². This is the most precise measurement of sin² 2θ<subscript>13</subscript> to date and the most precise measurement of |Δm²<subscript>ee</subscript>| in this channel. Several other analyses are also performed, including an independent measurement of sin² 2θ<subscript>13</subscript> using ...<subscript>e</subscript> samples tagged by neutron capture on hydrogen, a search for light sterile neutrinos, and a measurement of the absolute reactor antineutrino flux. [ABSTRACT FROM AUTHOR]