Thursday, August 9, 2012

1208.1551 (X. Qian et al.)

Mass Hierarchy Resolution in Reactor Anti-neutrino Experiments:
Parameter Degeneracies and Detector Energy Response
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X. Qian, D. A. Dwyer, R. D. McKeown, P. Vogel, W. Wang, C. Zhang
Determination of the neutrino mass hierarchy using a reactor neutrino experiment at $\sim$60 km is analyzed. Such a measurement is challenging due to the finite detector resolution, the absolute energy scale calibration, as well as the degeneracies caused by current experimental uncertainty of $|\Delta m^2_{32}|$. The standard $\chi^2$ method is compared with a proposed Fourier transformation method. In addition, we show that for such a measurement to succeed, one must understand the non-linearity of the detector energy scale at the level of a few tenths of percent.
View original: http://arxiv.org/abs/1208.1551

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