منابع مشابه
Lepton and Quark Mass Matrices
We propose a model that all quark and lepton mass matrices have the same zero texture. Namely their (1,1), (1,3) and (3,1) components are zeros. The mass matrices are classified into two types I and II. Type I is consistent with the experimental data in quark sector. For lepton sector, if seesaw mechanism is not used, Type II allows a large νμ-ντ mixing angle. However, severe compatibility with...
متن کاملThe Quark Mass Problem and CP–Violation
A simple breaking of the subnuclear democracy among the quarks leads to a mixing between the second and the third family, in agreement with observation. Introducing the mixing between the first and the second family, one finds an interesting pattern of maximal CP– violation as well as a complete determination of the elements of the CKM matrix and of the unitarity triangles. Invited talk given a...
متن کاملSpontaneous CP violation and quark mass ambiguities
I explore the regions of quark masses where CP will be spontaneously broken in the strong interactions. The boundaries of these regions are controlled by the chiral anomaly, which manifests itself in ambiguities in the definition of non-degenerate quark masses. In particular, the concept of a single massless quark is ill defined.
متن کاملA Basis Independent Formulation of the Connection Between Quark Mass Matrices, CP Violation and Experiment
In the standard electroweak model, with three families, a one-to-one correspondence between certain determinants involving quark mass matrices (m and m' for charge 2/3 and 1 / 3 quarks respectively) and the presence/absence of CP violation is given. In an arbitrary basis for mass matrices, the quantity Imde t 1-ram +, m ' m '+3 appropriately normalized is introduced as a measure of CP violation...
متن کاملTesting the standard model and schemes for quark mass matrices with CP asymmetries in B decays.
The values of sin 2α and sin 2β, where α and β are angles of the unitarity triangle, will be readily measured in a B factory (and maybe also in hadron colliders). We study the standard model constraints in the sin 2α − sin 2β plane. We use the results from recent analyses of fB and τb|Vcb| which take into account heavy quark symmetry considerations. We find sin 2β ≥ 0.15 and most likely sin 2β ...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1986
ISSN: 0370-2693
DOI: 10.1016/0370-2693(86)90659-3