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arXiv · 1408.0623

Detecting the Upturn of the Solar $^8$B Neutrino Spectrum with LENA

Randolph Möllenberg·Franz von Feilitzsch·Dominikus Hellgartner·Lothar Oberauer·Marc Tippmann·Jürgen Winter·Michael Wurm·Vincenz Zimmer
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Abstract

LENA (Low Energy Neutrino Astronomy) has been proposed as a next generation 50 kt liquid scintillator detector. The large target mass allows a high precision measurement of the solar $^8$B neutrino spectrum, with an unprecedented energy threshold of 2 MeV. Hence, it can probe the MSW-LMA prediction for the electron neutrino survival probability in the transition region between vacuum and matter-dominated neutrino oscillations. Based on Monte Carlo simulations of the solar neutrino and the corresponding background spectra, it was found that the predicted upturn of the solar $^8$B neutrino spectrum can be detected with 5 sigma significance after 5 y.

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Randolph Möllenberg, Franz von Feilitzsch, Dominikus Hellgartner, Lothar Oberauer, Marc Tippmann, Jürgen Winter, Michael Wurm, Vincenz Zimmer. 2014-08-04. Detecting the Upturn of the Solar $^8$B Neutrino Spectrum with LENA. https://doi.org/10.1016/j.physletb.2014.08.053

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