Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN
Abstract
We report on the neutrino mass measurement result from the first four-week science run of the Karlsruhe Tritium Neutrino experiment KATRIN in spring 2019. Beta-decay electrons from a high-purity gaseous molecular tritium source are energy analyzed by a high-resolution MAC-E filter. A fit of the integrated electron spectrum over a narrow interval around the kinematic endpoint at 18.57 keV gives an effective neutrino mass square value of...
Paper Details
Title
Improved Upper Limit on the Neutrino Mass from a Direct Kinematic Method by KATRIN
Published Date
Nov 25, 2019
Journal
Volume
123
Issue
22
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