منابع مشابه
Measures on Mixing Angles
We address the problem of the apparently very small magnitude of CP violation in the standard model, measured by the Jarlskog invariant J . In order to make statements about probabilities for certain values of J , we seek to find a natural measure on the space of Kobayashi-Maskawa matrices, the double quotient U(1)\SU(3)/U(1). We review several possible, geometrically motivated choices of the m...
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Inspired by the vector-like phenomenon of chiral gauge theories at short distances, we postulate that the W-gauge boson has a vector-like gauge coupling in the high-energy region, beside its purely right-handed gauge coupling observed in the low-energy region. It is discussed that the top quark acquires its mass via spontaneous symmetry breaking, while the u, d, c, s, b quarks acquire their mas...
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By combining the inputs from the neutrinoless double beta decay and the fits of cosmological models of dark matter with solar and atmospheric neutrino data, we obtain constraints on two of the mixing angles of Majorana neutrinos, which become stronger when coupled with the reactor neutrino data. These constraints are strong enough to rule out Majorana neutrinos if the small angle solution of so...
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Starting with the hypothesis that quark and lepton mixings are identical at or near the GUT scale, we show that the large solar and atmospheric neutrino mixing angles together with the small reactor angle Ue3 can be understood purely as a result of renormalization group evolution provided the three neutrinos are quasi-degenerate and have same CP parity. It predicts the common Majorana mass for ...
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Typically in unified theories the neutrino mixing angles, like the Cabibbo-Kobayashi-Maskawa (CKM) angles of the quarks, are related to the small mass ratios between fermions of different generations and are therefore quite small. A new approach for explaining the intergen-erational mass hierarchies is proposed here which, while giving small CKM angles, naturally leads to neutrino angles of ord...
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2018
ISSN: 1029-8479
DOI: 10.1007/jhep11(2018)104