Sensitivity Enhancement for the Searches of Neutrino Magnetic Moments through Atomic Ionization

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Aithousa Mitropoulos ()

Aithousa Mitropoulos

Megaron, Athens - Greece

Speaker

Prof. Henry Wong (Academia Sinica)

Description

A new detection channel on atomic ionization for possible neutrino elec- tromagnetic interactions was identified and studied. Orders of magnitude enhancement in sensitivities can be expected when the energy transfer to the target is of the atomic-transition scale. Interaction cross-section induced by neutrino magnetic mo- ments (mu_nu) was evaluated. New upper limit of mu_nu < 1.3×10^{−11} μ_B at 90% confidence level was derived using current data with reactor neutrinos. Potential reaches of future experiments are discussed. Experiments with sub-keV sensitivities can probe mu_nu to 10^{−13} μ_B. Positive observations of mu_nu in this range would imply that neutrinos are Majorana particles. Analysis with new data will be presented. Reference : H.T. Wong, H.B. Li and S.T. Lin, arXiv:1001.2074 (2010).

Primary author

Prof. Henry Wong (Academia Sinica)

Co-authors

Dr Hau-Bin Li (Academia Sinica) Dr Shin-Ted Lin (Academia Sinica)

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