Search for modulations of the solar Be-7 flux in the next-generation neutrino observatory LENA
Wurm, Michael · Caccianiga, Barbara · D'Angelo, Davide · Davini, Stefano · von Feilitzsch, Franz · Göger-Neff, Marianne · Lachenmaier, Tobias · Lewke, Timo · Lombardi, Paolo · Ludhova, Livia · Meindl, Quirin · Meroni, Emanuela · Miramonti, Lino · Möllenberg, Randolph · Oberauer, Lothar · Potzel, Walter · Ranucci, Gioacchino · Tippmann, Marc · Winter, Jürgen
Original · EN
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 1.7x10⁴ 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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