Tuesday, March 26, 2013

1303.6173 (S. K. Kang et al.)

Sterile neutrino analysis of reactor-neutrino oscillation    [PDF]

S. K. Kang, Y. D. Kim, Y. Ko, K. Siyeon
Sterile neutrinos are one candidate to explain anomalies in neutrino oscillations. The mass-difference-driving oscillation between flavors can be probed only within specific combinations of baseline and flight energy. For a neutrino whose mass is completely unknown, it is necessary to scan all available ranges in spectrum and all accessible baselines. Here, we present four-neutrino analysis of the results announced by RENO and Daya Bay, which performed the definitive measurements of $\theta_{13}$ based on the disappearance of the inverse-beta-decay antineutrino at km-order baselines. Our results within 3+1 scheme include the exclusion curve of $\Delta m_{41}$ vs. $\theta_{14}$, and the adjustment of $\theta_{13}$ due to the contribution of $\theta_{14}$ to the disappearance of electron antineutrinos.
View original: http://arxiv.org/abs/1303.6173

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