Quark Flavor Mixings from Hierarchical Mass Matrices

Abstract

In this paper, we extend the Fritzsch ansatz of quark mass matrices while retaining their hierarchical structures and show that the main features of the Cabibbo-Kobayashi-Maskawa (CKM) matrix $V$, including $|V_{us}^{}|\simeq |V_{cd}^{}|$, $|V_{cb}^{}|\simeq |V_{ts}^{}|$ and $|V_{ub}^{}|/|V_{cb}^{}|<|V_{td}^{}|/|V_{ts}^{}|$, can be well understood. This agreement is observed especially when the mass matrices have non-vanishing $(1,3)$ and $(3,1)$ off-diagonal elements. The phenomenological consequences of these for the allowed texture content and gross structural features of `hierarchical' quark mass matrices are addressed from a model independent prospective under the assumption of factorizable phases in these. The approximate and analytical expressions of the CKM matrix elements are derived, and a detailed analysis reveals that such structures are in good agreement with the observed quark flavor mixing angles and the CP-violating phase at the $1\sigma$ level and call upon a further investigation of the realization of these structures from a top-down prospective.

8 pages, 3 figures, Accepted for publication in European Physical Journal C

References in corpus (14)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• A_4 model for the quark mass matrices
• Different kind of textures of Yukawa coupling matrices in the two Higgs doublet model type III
• Texture specific mass matrices with Dirac neutrinos and their implications
• Yukawa Textures, New Physics and Nondecoupling
• Quark Mass Hierarchy and Flavor Mixing Puzzles
• Implications of Yukawa Textures in the decay $H^{+}\to W^{+}\gamma$ within the 2HDM-III
• Minimal Weak Basis Textures and Quark Mixing Data
• General lepton textures and their implications
• Lower bound on neutrino mass and possible CP violation in neutrino oscillations
• Clues towards unified textures
• Lepton textures and neutrino oscillations
• Generic lepton mass matrices and neutrino oscillations

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• Implications of ${\delta }_l^{CP}\sim 270^{\circ }$ and ${\theta }_{23}\gtrsim 45^{\circ }$ for texture specific lepton mass matrices and $0\nu \beta \beta$ decay
• Quark Mass Matrices, textures and CKM precision measurements
• A comparative study between the modified Fritzsch and nearest neighbor interaction textures