XXth International Conference on Neutrino Physics and Astrophysics

Poster Abstract

L.Bornschein & C.Kraus

Latest Results of the Mainz Neutrino Mass Experiment

The Mainz Neutrino Mass Experiment investigates the endpoint region of Tritium beta spectrum by use of a MAC-E-Filter (Magnetic Adiabatic Collimation followed by an electrostatic Filter) to determine the mass of the electron antineutrino. The results of two month of data taking in 2001 will be presented. On Neutrino 2000 the measurments of 98/99 with the result of m_nu^2 = -1.6 +- 2.5_stat +- 2.1_sys which leads to an upper limit of 2.2 eV for the neutrino mass. The measurements of 2001 show also no disturbancies and lead in combination with the results of 98/99 to m_nu^2 = -1.2 +- 2.2_stat +- 2.1_sys eV^2 and to the same upper limit. This work is sponsored by BMBF: FKZ 06Mz866I/5.

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