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arXiv · 1012.3021

Search for modulations of the solar Be-7 flux in the next-generation neutrino observatory LENA

Michael Wurm·Barbara Caccianiga·Davide D'Angelo·Stefano Davini·Franz von Feilitzsch·Marianne Göger-Neff·Tobias Lachenmaier·Timo Lewke·Paolo Lombardi·Livia Ludhova·Quirin Meindl·Emanuela Meroni·Lino Miramonti·Randolph Möllenberg·Lothar Oberauer·Walter Potzel·Gioacchino Ranucci·Marc Tippmann·Jürgen Winter
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Abstract

A next-generation liquid-scintillator detector will be able to perform high-statistics measurements of the solar neutrino flux. In LENA, solar Be-7 neutrinos are expected to cause 1.7x10^4 electron recoil events per day in a fiducial volume of 35 kilotons. Based on this signal, a search for periodic modulations on sub-percent level can be conducted, surpassing the sensitivity of current detectors by at least a factor of 20. The range of accessible periods reaches from several minutes, corresponding to modulations induced by helioseismic g-modes, to tens of years, allowing to study long-term changes in solar fusion rates.

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Michael Wurm, Barbara Caccianiga, Davide D'Angelo, Stefano Davini, Franz von Feilitzsch, Marianne Göger-Neff, Tobias Lachenmaier, Timo Lewke, Paolo Lombardi, Livia Ludhova, Quirin Meindl, Emanuela Meroni, Lino Miramonti, Randolph Möllenberg, Lothar Oberauer, Walter Potzel, Gioacchino Ranucci, Marc Tippmann, Jürgen Winter. 2010-12-14. Search for modulations of the solar Be-7 flux in the next-generation neutrino observatory LENA. https://doi.org/10.1103/physrevd.83.032010

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