The collaboration of the cubic neutrin telescope of the kilometer (KM3net) has reported the detection of a neutrino with an estimated energy of approximately 220 PEV (220 million million electronic volts) for its arca detector.
The event, KM3-230213A, is the first evidence that neutrinos of such energies occur in the most energetic universe and neutrino ever observed.
Neutrinos are the second most abundant particle in the universe after photons, but they have no electric charge, they hardly have mass and interact so weakly with the subject that remain the most mysterious of elementary particles. The experiments require huge detectors, in this case, the research of astroparticles with cosmic in the Abyss detector (ARCA) to 2 miles under the sea 40 miles from the coast of Sicily is a cubic kilometer size (!).
This was a single muon that crossed the entire detector, creating signals in more than a third of active sensors. His career combined with his record energy leads to the inference that the muon originated from a cosmic neutrino in the vicinity of the detector.
It is believed that supernova explosions and gamma ray bursts are cosmic accelerators that generate currents of cosmic ray particles that can interact with matter or photons around the source, producing neutrinos and photons. Some can also interact with cosmic microwave background photons and produce extremely energetic “cosmogenic” neutrinos.
This could be the first detection of a cosmogenic neutrino.
The KM3net and Arca neutrin telescope were built to learn about the fundamental properties of neutrinos, particularly neutrin oscillations. To try to determine the mass of neutrinos. Use seawater to ‘catch’ neutrinos, while optical modules detect the light of Cherenkov, a blue glow generated during propagation through water thanks to ultra relativistic particles produced in neutrin interactions.
According to Aart Heijboer, KM3net Physics and Software Manager at the Nikhef National Institute of Subatomics Physics in Nederlands, “this remarkable detection was achieved with only one tenth of the final configuration of the detector, which demonstrates the great potential of our experiment for the study of neutrinos and for neutrino astronomy.”
#Km3net #energetic #neutrino #universe #detected
