منابع مشابه
Cp Symmetry Violation
The symmetry known as CP is a fundamental relation between matter and antimatter. The discovery of its violation by Christenson, Cronin, Fitch, and Turlay (1964) has given us important insights into the structure of particle interactions and into why the Universe appears to contain more matter than antimatter. In 1928, Paul Dirac predicted that every particle has a corresponding antiparticle. I...
متن کاملA Symmetry Approach to Cp Violation
One of the greatest challenges for particle physics in the 1990’s is understanding the broken symmetry of CP violation. It is now almost 30 years since the discovery in 1964 of the KL → 2π decay. What has happened since? Why has there been no significant new experimental input in this long period? The original KL → 2π decay experiment is described by two parameters ǫ and ǫ. Today ǫ ≈ its 1964 v...
متن کاملSpontaneous violation of CP symmetry in the strong interactions.
Some time ago Dashen [Phys. Rev. D 3, 1879 (1971)] pointed out that spontaneous CP violation can occur in the strong interactions. I show how a simple effective Lagrangian exposes the remarkably large domain of quark mass parameters for which this occurs. I close with some warnings for lattice simulations.
متن کاملSpontaneous CP violation and Non-Abelian Family Symmetry in SUSY
We analyse the properties of generic models based on an SU(3) family symmetry providing a full description of quark charged lepton and neutrino masses and mixing angles. We show that a precise fit of the resulting fermion textures is consistent with CP being spontaneously broken in the flavour sector. The CP violating phases are determined by the scalar potential and we discuss how symmetries r...
متن کاملLattice chiral symmetry, CP-violation and Majorana fermions
A brief summary of lattice fermions defined by the general Ginsparg-Wilson algebra is first given. It is then shown that those general class of fermion operators have a conflict with CP invariance in chiral gauge theory and with the definition of Majorana fermions in the presence of chiral-symmetric Yukawa couplings. The same conclusion holds for the domain-wall fermion also.
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ژورنال
عنوان ژورنال: Il Nuovo Cimento
سال: 1965
ISSN: 0029-6341,1827-6121
DOI: 10.1007/bf02750083