In the left-right asymmetry model, differing neutron and antineutron lifetimes during the QCD phase transition generate baryon asymmetry while escaping sterile neutrinos produce opposite lepton asymmetry.
CP-violation effects in neutral meson oscillations in the left-right weak interaction model
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abstract
An analysis of the latest, most accurate experimental data on neutron decay indicates the need to expand the Standard Model by introducing an admixture of the right vector boson $W_R$ with a mixing angle of $\zeta = -0.039\pm0.014$ with the left vector boson $W_L$ and a ratio of the squares of the masses of $W_1$ and $W_2$ equal to $\delta = 0.070\pm0.010$. In this regard, the possibility of describing CP-violation effects in neutral meson oscillations within the framework of the left-right weak interaction model with parameters $\delta$ and $\zeta$ was investigated. It was shown that within this model, CP violation effects in the decays of $K^0$-mesons, $D^0$-mesons, $B^0$-mesons, and $B_s^0$-mesons can be successfully described. The results of calculations within the extended left-right model with parameters $\delta$ and $\zeta$ are confirmed by experimental results. Thus, the nature of CP violation is related to the presence of a right-handed vector boson admixture.
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Baryon and lepton asymmetry of the Universe in the left-right asymmetry model of weak interaction
In the left-right asymmetry model, differing neutron and antineutron lifetimes during the QCD phase transition generate baryon asymmetry while escaping sterile neutrinos produce opposite lepton asymmetry.