Quark mass matrices with full first-order perturbation

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.2349· OSTI ID:6277738

Du, D ^[1]; Xing, Z ^[2]

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1. Institute of High Energy Physics, P.O. Box 918 (4), Beijing 100039 (China)
2. China Center of Advanced Science and Technology (World Laboratory), P.O. Box 8730, Beijing 100080 (China) Institute of High Energy Physics, P.O. Box 918 (4), Beijing 100039 (China)

In view of current experimental constraints on the top-quark mass [ital m][sub [ital t]] and the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements [ital V][sub [ital i][ital j]], we study a modified form of the Fritzsch quark mass matrices, in which two nonzero diagonal elements for the charm and strange quarks are introduced as the additional first-order perturbative terms. In a reasonable analytical approximation, this modification can yield the upper bound of [ital m][sub [ital t]] twice as much as that predicted by the Fritzsch [ital Ansatz]. The magnitudes of the CKM matrix elements and the parametrization-invariant measure of [ital CP] violation are restricted very well in terms of ratios of quark masses, and some interesting relations such as [vert bar][ital V][sub [ital u][ital b]]/[ital V][sub [ital c][ital b]][vert bar][sup 2][approx][ital m][sub [ital u]]/[ital m][sub [ital c]], [vert bar][ital V][sub [ital t][ital d]]/[ital V][sub [ital t][ital s]][vert bar][sup 2][approx][ital m][sub [ital d]]/[ital m][sub [ital s]], and [vert bar][ital V][sub [ital u][ital b]][vert bar][approx][vert bar][ital V][sub [ital t][ital s]][vert bar] are obtained to better accuracy.

• OSTI ID: 6277738
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:5; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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