scholarly journals Quark mass ratios and mixing angles from SU(3) family gauge symmetry

2006 ◽  
Vol 637 (4-5) ◽  
pp. 245-250 ◽  
Author(s):  
Thomas Appelquist ◽  
Yang Bai ◽  
Maurizio Piai
Keyword(s):  
Gauge Symmetry ◽  
Quark Mass ◽  
Mixing Angles ◽  
Mass Ratios

A SIMPLE ANSATZ RELATING ALL MIXING ANGLES TO QUARK MASS RATIOS

1991 ◽  
Vol 06 (24) ◽  
pp. 2243-2247 ◽  
Author(s):  
DANIEL NG ◽  
Y. JACK NG
Keyword(s):  
Cp Violation ◽  
Quark Mass ◽  
Matrix Elements ◽  
Mixing Angles ◽  
Mass Matrices ◽  
Mass Ratios

A simple ansatz for quark mass matrices which yields the Kac–Moody (KM) matrix elements, [Formula: see text], Vcb = ms/mb, and [Formula: see text], is investigated, resulting in two empirical identities, md/ms = ms/mb and mu/mc = mc/mt. Using Vub = 0.004 ± 0.002, we obtain mt = (290 ± 140) GeV . We find that this prediction is consistent with other processes, such as [Formula: see text] mixing. The invariant quantity, J, of CP violation is of the order 3 × 10−5 in agreement with experiments.

scholarly journals QUARK MASS MATRICES IN THE A4 MODEL

2002 ◽  
Vol 17 (10) ◽  
pp. 627-630 ◽  
Author(s):  
ERNEST MA
Keyword(s):  
Gauge Symmetry ◽  
Quark Mass ◽  
Spontaneous Breaking ◽  
Charged Current ◽  
Lepton Sector ◽  
Mixing Angles ◽  
Quark Masses ◽  
Mass Matrices ◽  
The Standard Model ◽  
Mixing Matrix

If the standard model of quark interactions is supplemented by a discrete A4 symmetry (which may be relevant for the lepton sector), the spontaneous breaking of the electroweak gauge symmetry allows arbitrary quark masses, but all mixing angles are predicted to be zero. A pattern of the explicit breaking of A4 is proposed, which results in a realistic charged-current mixing matrix.

GENERAL STUDY OF QUARK MASS MATRICES WITH FULL OFF-DIAGONAL MIXING

1992 ◽  
Vol 07 (25) ◽  
pp. 6357-6370 ◽  
Author(s):  
ROBERT E. SHROCK
Keyword(s):  
Quark Mass ◽  
Mass Matrix ◽  
General Study ◽  
Mixing Angles ◽  
Quark Masses ◽  
Rotation Matrices ◽  
Quark Mixing ◽  
Down Quark ◽  
Mass Matrices ◽  
Mixing Matrix

We study an ansatz for the quark mass matrix in which all of the nondiagonal entries are nonzero, but which still allows the quark mixing angles to be calculated in terms of ratios of quark masses and certain phases. Analytic calculations of the orthogonal rotation matrices in the up and down quark sectors and the resultant observed quark mixing matrix are presented. Comparison with experimental data is given.

LIGHT QUARK MASS RATIOS (mu:md:ms) FROM MESON AND BARYON MASS SPLITTINGS

2013 ◽  
Vol 28 (25) ◽  
pp. 1360015 ◽  
Author(s):  
PETER MINKOWSKI
Keyword(s):  
Quark Mass ◽  
Sum Rules ◽  
Light Quark ◽  
Nucl Phys ◽  
Qcd Sum Rules ◽  
Baryon Mass ◽  
Mass Ratios ◽  
Light Quark Mass

The basis of the material discussed is our work in collaboration with Arnulfo Zepeda from 1979 [Nucl. Phys. B164, 25 (1980)]. The ingredients and consequences of this work will be presented, and compared with results obtained from QCD sum rules and lattice simulations of QCD in accordance with chiral expansions. An up-to-date conclusion will not be possible in this paper, but some comments towards such goal will be given in a concluding section.

Determination of quark mass ratios from Kl3 decay

1979 ◽  
Vol 86 (2) ◽  
pp. 171-174 ◽  
Author(s):  
C.A. Dominguez
Keyword(s):  
Quark Mass ◽  
Mass Ratios

scholarly journals QCD isospin breaking in meson masses, decay constants and quark mass ratios

2001 ◽  
Vol 602 (1-2) ◽  
pp. 87-108 ◽  
Author(s):  
G. Amoros ◽  
J. Bijnens ◽  
P. Talavera
Keyword(s):  
Quark Mass ◽  
Isospin Breaking ◽  
Decay Constants ◽  
Mass Ratios

Current-quark mass ratios fromη→3π

1984 ◽  
Vol 30 (3) ◽  
pp. 674-676 ◽  
Author(s):  
Ll. Ametller ◽  
C. Ayala ◽  
A. Bramon
Keyword(s):  
Quark Mass ◽  
Current Quark Mass ◽  
Mass Ratios ◽  
Current Quark

New bounds on mixing angles and the t-quark mass

1985 ◽  
Vol 87 (1) ◽  
pp. 16-24
Author(s):  
H. Gilson
Keyword(s):  
Quark Mass ◽  
Mixing Angles
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