250,273 research outputs found

    Jarlskog Invariant of the Neutrino Mapping Matrix

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    The Jarlskog Invariant Jν−mapJ_{\nu-map} of the neutrino mapping matrix is calculated based on a phenomenological model which relates the smallness of light lepton masses mem_e and m1m_1 (of ν1\nu_1) with the smallness of TT violation. For small TT violating phase χl\chi_l in the lepton sector, Jν−mapJ_{\nu-map} is proportional to χl\chi_l, but mem_e and m1m_1 are proportional to χl2\chi_l^2. This leads to Jν−map≅1/6memμ+O(memμmτ2)+O(m1m2m32) J_{\nu-map} \cong {1/6}\sqrt{\frac{m_e}{m_\mu}}+O \bigg(\sqrt{\frac{m_em_\mu}{m_\tau^2}}\bigg)+O \bigg(\sqrt{\frac{m_1m_2}{m_3^2}}\bigg). Assuming m1m2m32<<memμ\sqrt{\frac{m_1m_2}{m_3^2}}<<\sqrt{\frac{m_e}{m_\mu}}, we find Jν−map≅1.16×10−2J_{\nu-map}\cong 1.16\times 10^{-2}, consistent with the present experimental data.Comment: 19 page

    Iterative Solutions for Low Lying Excited States of a Class of Schroedinger Equation

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    The convergent iterative procedure for solving the groundstate Schroedinger equation is extended to derive the excitation energy and the wave function of the low-lying excited states. The method is applied to the one-dimensional quartic potential problem. The results show that the iterative solution converges rapidly when the coupling gg is not too small.Comment: 14 pages, 4 figure

    Implications of the DAMA/NaI and CDMS experiments for mirror matter-type dark matter

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    We re-analyse the implications of the DAMA/NaI experiment for mirror matter-type dark matter, taking into account information from the energy dependence of the DAMA annual modulation signal. This is combined with the null results from the CDMS experiment, leading to fairly well defined allowed regions of parameter space. The allowed regions of parameter space will be probed in the near future by the DAMA/LIBRA, CDMS, and other experiments, which should either exclude or confirm this explanation of the DAMA/NaI annual modulation signal. In particular, we predict that the CDMS experiments should find a positive signal around the threshold recoil energy region, E_R < 15 keV in the near future.Comment: about 15 pages, Some changes to the tex
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