![]() ![]() The inverted hierarchy of neutrino masses is excluded by the cosmological bound of the sum of neutrino masses. Moreover, the observation of would also help determine the absolute scale of neutrino mass, since the. It is remarked that the modulus is fixed at nearby in the fundamental domain of SL(2, Z), which suggests the residual symmetry in the quark and lepton mass matrices. Observation of neutrinoless double beta decay ( ), a process, would establish the existence of total lepton number violation (LNV), thereby implying that neutrinos are massive Majorana particles 1. ![]() The effective neutrino mass of the decay is –31 meV. Since both the Dirac CP phase and are correlated with the sum of neutrino masses, improving its cosmological bound provides crucial tests for our scheme as well as the precise measurement of and. Scientists know about three neutrino flavors (the electron neutrino, muon neutrino, and tau neutrino) so far, which are related to the three charged lepton flavors (the electron, muon and tau). In the common region for quarks and leptons, the predicted sum of neutrino masses is 87–120 meV taking account of its cosmological bound. Lepton mass matrices also work well at nearby, which overlaps with the one of the quark sector, for the normal hierarchy of neutrino masses. We obtain the successful quark mass matrices, in which the down-type quark mass matrix is constructed by modular forms of weight 2, but the up-type quark mass matrix is constructed by modular forms of weight 6. We adopt modular forms of weights 2 and 6 for quarks and charged leptons, while we use modular forms of weight 4 for the neutrino mass matrix which is generated by the Weinberg operator. We study quark and lepton mass matrices in the modular symmetry towards the unification of the quark and lepton flavors. It predicts that the interactions of charged leptons have the same probability of occurring independently of their flavor, hence the concept of lepton flavor universality. In the modular invariant flavor model of rm A4, we study the hierarchical structure of lepton/quark flavors at nearby fixed points of taui and tauomega of the modulus, which are in. This flavour universality is deeply ingrained in the symmetry structure of the Standard Model (SM) and applies to both the electroweak and strong forces (though the latter is irrelevant for leptons). In recent years, several measurements have shown. Hiroshi Okada 1 ,2 a and Morimitsu Tanimoto 3Īsia Pacific Center for Theoretical Physics, 37673, Pohang, Republic of Koreaĭepartment of Physics, Pohang University of Science and Technology, 37673, Pohang, Republic of Koreaĭepartment of Physics, Niigata University, 950-2181, Niigata, Japan This model includes 3 particles called 'charged leptons': electron, muon and tau, i.e. The three flavours of charged leptons electron, muon and tau are the same in many respects. However, all other interactions do not distinguish among the different flavors, which is a property called lepton flavor universality (LFU). many of your favorites like Random Forest and various flavors of gradient-boosted trees. Parameters of "scattering" of leptons especially of neutrinos on other leptons, or on hadrons. Signal/background discrimination for the VBF Higgs four lepton. The three charged leptons (electron, muon, tau-lepton) carrying equal electro-magnetic charge ( elementary negative charge, $Q = -e$) and equal weak hypercharge, $\text$, or neutrinos in Super-Kamiokande experiment indicates a large lepton flavor violation (LFV) among fundamental interactions. Lepton universality is the model, or proposition, that the interactions of leptons of any of the (six) flavors are described consistently and essentially completely as electroweak interaction, with In this context, nonstandard Higgs couplings, including the Lepton Flavor Violating (LFV) ones, are predicted by many models of physics beyond SM -. Test of lepton flavor universality and search for lepton flavor violation in B K decays. ![]()
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