In the history of neutrino physics, there have been what we call “false paths”. They correspond to theoretical speculations or to measurements either wrong or overinterpreted, which did not survive after a period which could be several years. These false Continue Reading …
In 1914, James Chadwick [Cha14] and others showed experimentally that the electron spectrum measured in beta decay was continuous instead of a single line expected in a two-body decay. This result has not been immediately accepted since it could be Continue Reading …
In 1946, Bruno Pontecorvo, then in Canada, proposed to use the inverse beta-process ( + Z → + [Z+1]) to detect the neutrinos, mentioning the famous chlorine-argon reaction (+ 37Cl →+ 37Ar) followed by the observed 37Ar decay [Pon46], and Continue Reading …
In 1985, a tritium beta decay experiment [Sim85] announced to have observed an end of beta decay spectrum compatible with the existence of a new neutrino, with a mass of 17 keV. If stable, this neutrino, to be added to Continue Reading …
In September 2011, the OPERA experiment announced to have measured the travel time of the neutrinos between their production at the output of the CERN SPS and their arrival in the OPERA detector in Gran Sasso tunnel 730 km away Continue Reading …
LSND and miniBoone oscillation results From 1995, the LSND experiment looked for in a neutrino beam produced at the Los Alamos laboratory. The result was the observation of an excess of interpreted as neutrino oscillation with parameters (Δm2 ~ 1eV2) Continue Reading …
The funny title is from V. Tretyak [Tre11]. He excellently reviewed many evidences or claims for double beta decay without neutrinos since the 50’s, results which were never confirmed. The most recent claim in 2002 has been by Klapdor-Kleingrothaus, using Continue Reading …
