Authors: Imrich Krištof
This presented tech–science paper is focused on main themes of evolution and history of research of neutrinos – elusive elementary particles. The highlights is dedicated to the scheme of born and reborn and cascade decay hierarchic high energy particles, called hyperons (lambda, sigma, xi, epsilon, omega) and main position particles called mezons (mion, pion, kaon, rhó meson, éta meson, phí meson, omega meson, J/Ψ (J-Psí meson), h1 meson, a0-meson f1, f2 meson). This Sun or starshowers fall in energetic clusters and clouds on each cm-2, of Earth’s surface (φ average flux of neutrinos 10 billions neutrinos on cm2/sec. (1010 cm-2.s-1) for Eν > 7 MeV ->~ 106 cm-2.s-1). Cross section of neutrinos is very small σνN = 10-42 m2 – 10-48 m2 = 10-19 barn, 1 barn is an unit of cross section. In the Ending part of starshowers the photons, phonons and electron, mion, and tauon are detected in photomultipliers and scintillators, like a Cherenkov radiation – hyperrelativistic electrons, photons and mions and tauons, visually Fig. 4 Neutrino Detector SUDBURY(SNO) Canada. The main part of paper is focused on NEUTRINO FLAVOR AND MASS. According Pauli and Fermi–Dirac and Bose–Einstein Statistical Laws each particle is conjugated with its own antiparticles: electron (e-) and positron (e+), electron neutrino and electron antineutrino, quark beauty / bottom and antiquark beauty / bottom. In the text is not forget the facts about 11 NOVEMBER 1974 – particles J/Ψ REVOLUTION MESONS J/Ψ consist of beauty quark and beauty antiquark. The Pioneer work of Clyde L. Cowan, Jr. and Frederick Reines in Hanford and Savannah River Plant lead to fundamental discovery and detection of neutrinos. On Fig. 7 is described Cowan–Reines Neutrino Experiment. In the End of this text is situation of Neutrinos and The Standard Model of particles. The goal of this work is clarified the evolution and theoretical background of elementary particles – neutrinos.
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