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Measuring the leptonic \(CP\) phase in neutrino oscillations with nonunitary mixing

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      Most cited references 49

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      CP-Violation in the Renormalizable Theory of Weak Interaction

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        Neutrino oscillations in matter

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          Is Open Access

          Big-Bang Nucleosynthesis

          A critical review is given of the current status of cosmological nucleosynthesis. In the framework of the Standard Model with 3 types of relativistic neutrinos, the baryon-to-photon ratio, \(\eta\), corresponding to the inferred primordial abundances of deuterium and helium-4 is consistent with the independent determination of \(\eta\) from observations of anisotropies in the cosmic microwave background. However the primordial abundance of lithium-7 inferred from observations is significantly below its expected value. Taking systematic uncertainties in the abundance estimates into account, there is overall concordance in the range \(\eta = (5.7-6.7)\times 10^{-10}\) at 95% CL (corresponding to a cosmological baryon density \(\Omega_B h^2 = 0.021 - 0.025\)). The D and He-4 abundances, when combined with the CMB determination of \(\eta\), provide the bound \(N_\nu=3.28 \pm 0.28\) on the effective number of neutrino species. Other constraints on new physics are discussed briefly.
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            Author and article information

            Journal
            PRVDAQ
            Physical Review D
            Phys. Rev. D
            American Physical Society (APS)
            2470-0010
            2470-0029
            February 2017
            February 2017
            : 95
            : 3
            10.1103/PhysRevD.95.033005
            © 2017

            http://link.aps.org/licenses/aps-default-license

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