Antineutrinos, the antiparticles of neutrinos, are neutral particles produced in nuclearbeta decay. They have a nuclear spin of 1/2, and they are part of the lepton family of particles. Antineutrinos interact with other matter only through the gravitational and weak nuclear forces, making them very difficult to detect experimentally. Neutrino oscillation experiments indicate that antineutrinos have mass, but beta decay experiments constrain that mass to be very small. The neutrino is an elementary particle. ... Neutral means balanced between two or more opposites. ... The word nuclear means of or belonging to the nucleus of something. ... In nuclear physics, beta decay (sometimes called neutron decay) is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted. ... In physics, spin is an intrinsic angular momentum associated with microscopic particles. ... In physics, a particle is a lepton if it has a spin of 1/2 and does not experience the strong nuclear force. ... Matter is commonly referred to as the substance of which physical objects are composed. ... This article covers the physics of gravitation. ... The weak nuclear force or weak interaction is one of the four fundamental forces of nature. ... The solar neutrino problem was a major discrepancy between measurements of the neutrinos flowing through the Earth and theoretical models of the solar interior, lasting from the mid-1960s to about 2002. ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... In nuclear physics, beta decay (sometimes called neutron decay) is a type of radioactive decay in which a beta particle (an electron or a positron) is emitted. ...
Because antineutrinos and neutrinos are neutral particles it is possible that they are actually the same particle. Particles which have this property are known as Majorana particles. If neutrinos are indeed Majorana particles then the neutrinoless double beta decay process is allowed, and several experiments have been proposed to search for this process. In mathematics and physics, in particular in the theory of the orthogonal groups, spinors are certain kinds of mathematical objects (group representations of Spin(N), roughly speaking) similar to vectors, but which change sign under a rotation of radians. ... In the process of beta decay unstable nuclei decay by converting a neutron in the nucleus to a proton and emitting an electron and anti-neutrino. ...
Search for neutrinoless double beta decay with enriched 76Ge in Gran Sasso 1990–2003
Particles in physics - elementary particles List of particles in particle physics. ... The willingness to question previously held truths and search for new answers resulted in a period of major scientific advancements, now known as the Scientific Revolution. ... In particle physics, an elementary particle is a particle of which other, larger particles are composed. ...
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