The symmetry-breaking pattern of scalars in low dimension representations

We discuss the minimum problem of an SU(n) symmetric potential which has number of Higgs in fundamental, adjoint, second-rank symmetric and antisymmetric tensor representations. When there is only one scalar in the adjoint or tensor representation, the surviving symmetry cannot be chosen arbitrarily small by adjusting the parameters in the potential. When there is one more adjoint or tensor representation, the surviving symmetry after symmetry breaking can be diminished to nothing. However, when the two higher dimension representation scalars are diagonalized or quasi-diagonalized simultaneously at the local minimum, the surviving symmetry exists. We give the conditions for the existence of such a local minimum and its symmetry-breaking pattern. Our method is to transfer these problems to the relative orientation of vectors and the number of different eigenvalues.     

SU(6) Analysis of Mesonic of B-Mesons

The SU(6) symmetry of strong interactions among light quarks is used to analyse two-body mesonic decays of B-mesons based on the Hamiltonian proposed by He-McKellar- Wu.     

Strong CP in Heavy Quark Physics

We argue that strong CP phase should be shifted to b and t quark masses due to the requirement of vacuum stability. The strong CP problem in low energy sector thus disappears. We predict large CP violation in electric dipole moment of W and heavy quarks.     

VARIETIES OF CP VIOLATION IN NEUTRAL B MESON DECAYS

We discuss various CP violation effects of neutral B mesons within the framework of the standard model.We classify 28 hadronic two-body decay channels of neutral B mesons into four classes,each of them has different CP violation effects, that is,CP violation due to phase dif- ference between mixing elements M₁₂ and Г₁₂; due to that between mixing elements and decay amplitudes; due to CP phase in the pure particle decay amplitudes and the interplay of these sources .Cascade decays of these channels are also discussed where copious interference is taken into account .Results are given in re- phasing invariants of the K-M matrix .It is shown that CP violation effects might be large(tHe largest,10^-1,but the CP asymmetry event branching cross section is small,at the order or approximate 10^-5±1/2.     

Proton decay,annihilation or fusion?

The proton decay candidatep→μ⁺η of Kamioka NDE in Japan, if seriously taken, probably means that fusion is the only mechanism of proton decay. A model based on the work of Pati-Salam-Sarkar is discussed in detail.     

Proton decay in theSU(4) c ×SU(2) L ×SU(2) R model

Possible proton decays in theSU(4) _C ×SU(2) _L ×SU(2) _R unification model are discussed. There are some characteristics in the decay products, which are different from those in the standardSU(5) orSO (10) model, in certain cases.     

Comments on a Definition of Maximal CP Violation

In the weak basis with diagonalized up quark mass matrix and Hermitian down quark mass matrix, the sequential product of the off dingonal elements M₁₂^dM₂₃^dM₃₁^d is a phase-convention-independent quantity. The idea of using the argument of this product to define maximal CP violation is examined, along with other definitions. The argument in reality is not π/2 allowing experimental and theoretical uncertainties.     

Cosmological Constraints on Weyl's Vector Meson

We study the mass of Weyl'a vector meson (WVM) M_e in the model proposed by Hung Cheng. We find from cosmological constraints that M_e should be. either extremely light as no greater than 400 eV, or extremely heavy ae much greater than M_p, corresponding to the Weyl's gauge coupling constant f to be f < l0^-26 and f >> 1, respectively. We regard our results reasonable based on Dirac's large number theorem.     

The invariance of CP effects under particle phase choices

Recent data give unexpectedly large cross-sections for charmed particle production at high x_F in hadron collisions. This may imply that the proton has a non-negligible uudc$\text{c}$ Fock component. The interesting consequences of such a hypothesis are explored.     

Acoplanar angle relative to beam polarization in three-jet events in e+e− colliding experiments

The angular correlation between the hadron plane and the thrust-beam-polarization plane is discussed and calculated in two cases: for vector gluons and for scalar gluons.