Study on νμ, ντ decays and CP non-invariance at early epoch of the Universe.

Details Study on νμ, ντ decays and CP non-invariance at early epoch of the Universe. Study on νμ, ντ decays and CP non-invariance at early epoch of the Universe.

Mar 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998cotph..29..271d&link_type=abstract

Commun. Theor. Phys., Vol. 29, No. 2, p. 271 - 276

Physics

Early Universe: Neutrinos

Scientific paper

The authors study the νμ and ντ decays in the early epoch of the universe. If m(ντ) > 2me, there would be a CP asymmetry between ντ→e++e-+νe and ν¯τ→e++e-+ν¯e. The resultant CP non-invariance is a function of temperature and density and can reach 10-7 for a reasonable temperature range, but it is noticed that if m(ντ) > 2mμ ≡ 200 MeV, the CP non-invariance can be much larger.

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