Possible enhancement of the weak interaction of neutrinos in a plasma

Details Possible enhancement of the weak interaction of neutrinos in a plasma Possible enhancement of the weak interaction of neutrinos in a plasma

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984zhetf..86..796o&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 86, March 1984, p. 796-808. In Russian.

Physics

2

Cosmology, Elementary Particle Interactions, Neutrinos, Plasma-Particle Interactions, Weak Interactions (Field Theory), Yang-Mills Fields, Broken Symmetry, Electromagnetic Interactions, Gravitational Collapse, Polarization (Waves), Relic Radiation, Screen Effect, Wave Excitation

Scientific paper

Using the standard model of electroweak interactions, consideration is given to a system, namely a Boltzmann plasma with a background of neutrinos, in which the symmetry of the electromagnetic and weak interactions is infringed. It is shown that in a medium of this type and in the presence of Z-gamma mixing of the excitation of neutral fields in polarization phenomena, a mechanism for the long-range action of weak forces exists which differs from the known case of the high-temperature restoration of symmetry. Dispersion equations for the excitation of Yang-Mills fields in this system are derived; for a Weinberg angle not equal to 30 deg, the excitations of a massive neutral field delta-Z which have a spectrum identical with electromagnetic oscillations are massless (long-range). The screening of test particles in this medium is calculated; this includes the screening of a hypothetical neutrino which possesses mass and which is effectively bound by long-range forces to electrons inside the Debye sphere.

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