In this contribution, we show the HOLMES experiment with its physics reach and technical challenges, along with its status and perspectives. Each detector will be implanted with around 300 Bq of holmium and the goal of the experiment is implanting ≈500 detectors (8圆4 array of detectors) to reach an accuracy of the order of eV. neutron by Pauli, the new particle would be emitted to- gether with the electron in beta decay so that the total energy would be conserved. Holmium will be implanted into a micro calorimeter made by a metallic absorber coupled to transition edge sensor (TES). It will measure the spectrum end point of the electron capture (EC) decay of $^$Ho embedded in the detector not to alter significantly its heat capacity. An electron volt is a measure of energy and hence its mass. The laboratory measurements focus exclusively on the electron neutrino mass me as here the highest exper.

HOLMES is an experiment that aims to measure the effective νe mass using a calorimetric approach. It has reported an upper limit on the electron neutrino to be 0.48 electron volts. measured or constrained from oscillation experiments.

Abstract : The measurement of neutrino masses is still one of the most compelling issues in modern particle physics. With a mass of less than 0.

Electron neutrino mass