Correlations between quark mass and flavor mixing hierarchies
نویسندگان
چکیده
We calculate the quark flavor mixing matrix V based on Hermitian mass matrices Mu and Md with vanishing (1,1), (1,3) (3,1) entries. The popular leading-order prediction |Vub/Vcb|≃mu/mc is significantly modified, result agrees current experimental value. find that behind strong hierarchy of up- or down-type quarks weak texture characterized by an approximate seesaw-like relation among its (2,2), (2,3) (3,3) elements.
منابع مشابه
Quark Mass Hierarchies, Flavor Mixing and Maximal Cp –violation
Flavor mixing and the quark mass spectrum are intimately related. In view of the observed strong hierarchy of the quark and lepton masses and of the flavor mixing angles it is argued that the description of flavor mixing must take this into account. One particular interesting way to describe the flavor mixing emerges, which is particularly suited for models of quark mass matrices based on flavo...
متن کاملThe top quark mass and flavor mixing in a Seesaw model of Quark Masses
The top quark mass and the flavor mixing are studied in the context of a Seesaw model of Quark Masses based on the gauge group SU(2)L×SU(2)R×U(1). Six isosinglet quarks are introduced to give rise to the mass hierarchy of ordinary quarks. In this scheme, we reexamine a mechanism for the generation of the top quark mass. It is shown that, in order to prevent the Seesaw mechanism to act for the t...
متن کاملFlavor Democracy and Quark Mass Matrices *
Based on experimental mass hierarchy, a set of flavor–democratic (FD) quark mass matrices at low energies is discussed. The model predicts CP violation parameters J CP = (0.3 ± 0.2) 10 −4 and ε ′ /ε = (0.6 ± 0.5) 10 −3. However, this simple FD model also predicts a physical top quark mass not much higher than 100 GeV. As a next step, we assume that the Standard Model (SM) breaks down around som...
متن کاملFriedberg-Lee Symmetry for Quark Masses and Flavor Mixing
We point out a generic correlation between the Friedberg-Lee symmetry of quark mass operators and the vanishing of quark masses. We make phenomenological explorations on two textures of quark mass matrices with the broken Friedberg-Lee symmetry. We present a new pattern of quark mass matrices in agreement with current experimental data. Both analytical and numerical results of our calculations ...
متن کاملRunning quark mass in two flavor QCD ∗
We present first results for the step scaling function σP of the renormalization factor ZP of the pseudoscalar density. The simulations are performed within the framework of the Schrödinger functional with two flavors of O(a) improved Wilson fermions. The knowledge of σP is required to compute the renormalization group invariant quark masses. We also study the performance of a variant of the HM...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 2022
ISSN: ['1873-1562', '0550-3213']
DOI: https://doi.org/10.1016/j.nuclphysb.2021.115634