Top Quark Mass and Signs of Re i Using Fritzsch-Type Quark Mass Matrix
نویسندگان
چکیده
منابع مشابه
1 99 2 Heavy Top Quark From Fritzsch Mass
It is shown, contrary to common belief, that the Fritzsch ansatz for the quark mass matrices admits a heavy top quark. With the ansatz prescribed at the supersymmetric grand unified (GUT) scale, one finds that the top quark may be as heavy as 145 GeV, provided that tanβ (the ratio of the vacuum expectation values of the two higgs doublets) ≫ 1. Within a non-supersymmetric GUT framework with two...
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We consider top-anti-top production near threshold in e+e− collisions, resumming Coulomb-enhanced corrections at next-to-next-to-leading order (NNLO). We also sum potentially large logarithms of the small top quark velocity at the next-toleading logarithmic level using the renormalization group. The NNLO correction to the cross section is large, and it leads to a significant modification of the...
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We summarize the expectations for the top quark mass in supersymmetric models and discuss the potential implications of its value measured by the CDF group in Fermilab.
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For the non-Hermitian Fritzsch-type mass matrix (M̃u, M̃d), which is a general expression of quark mass matrices, the rephasing-gauge dependency and δ-dependency (where Vub = |Vub|e) of each matrix element M̃qij (q = u, d; i, j = 1, 2, 3) are investigated. We find that the textures of (M̃u, M̃d) depend on the rephasing gauge and we can always take M̃u32 = 0 without losing generality, so that the rema...
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A number of numerical simulations of lattice gauge theory have indicated a low mass of strange quark in 100 MeV range at the scale of μ = 2 GeV. In the unquenched case, which is improved over the simulation in the quenched approximation by the inclusion of u and d sea quark effects, one sees a further downward trend. Here the fermion mass spectrum of the Fritzsch texture is recalculated. In a s...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1992
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp/87.5.1299