A New upper limit for the tau - neutrino magnetic moment

The DONUT collaboration Schwienhorst, R. ; Rusack, R. ; Ciampa, D. ; et al.
Phys.Lett. B513 (2001) 23-29, 2001.
Inspire Record 552998 DOI 10.17182/hepdata.41688

Using a prompt neutrino beam in which a nu_tau component was identified for the first time, the nu_tau magnetic moment was measured based on a search for an anomalous increase in the number of neutrino-electron interactions. One such event was observed when 2.3 were expected from background processes, giving an upper 90% confidence limit of 3.9x10^-7 Bohr magnetons.

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