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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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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In the framework of the Standard Model with lepton mixing the radiative decay ν i → ν j γ of a neutrino of high (E ν ∼ 100 GeV) and super-high (E ν ≥ 1 T eV) energy is investigated in the Coulomb field of a nucleus. Estimates of the decay probability and " decay cross-section " for neutrinos of these energies in the electric field of nucleus permit one to discuss the general possibility of carr...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2009
ISSN: 1550-7998,1550-2368
DOI: 10.1103/physrevd.79.013009