Chirality of heavy lepton current from anomalous e-μ production

It is pointed out that the neutral missing mass distribution in anomalous e-μ production from e⁺e^? colliding beam experiments provides the most sensitive method of distinguishing between V-A and V+A heavy lepton currents, as well as giving limits on the associated neutrino mass.     

Cryptobaryonic dark matter

It is proposed that dark matter could consist of compressed collections of atoms (or metallic matter) encapsulated into, for example, 20 cm big pieces of a different phase. The idea is based on the assumption that there exists at least one other phase of the vacuum degenerate with the usual one. Apart from the degeneracy of the phases we only assume standard model physics. The other phase has a Higgs vacuum expectation value appreciably smaller than in the usual electroweak vacuum. The balls making up the dark matter are very difficult to observe directly, but inside dense stars may expand absorbing the star and causing huge explosions (gamma ray bursts). The ratio of dark matter to ordinary matter is expressed as a ratio of nuclear binding energies and predicted to be about 5.     

Phase-shift analysis of π+π− scattering between 1.1 and 1.8 GeV based on fixed momentum transfer analyticity

Using extrapolated π⁺π^? moments from amplitude analysis of the 17 GeV/c CERN-Munich experiment on π^?p → π⁺π^?n we attempt to reduce phase-shift ambiguities by imposing fixed-t and fixed-u analyticity. Our solution agrees qualitatively with semi-local duality. We also perform a phase-shift analysis by constraining the result to be compatible with the fixed-t (?u) amplitudes. A smooth phase-shift solution is obtained by showing a clear ?′ signal.     

Phase-shift analysis of π+π− scattering between 1.0 and 1.8 GeV based on fixed momentum transfer analyticity (II)

We present our final results for a ππ phase-shift analysis based on extrapolated moments obtained from the 17 GeV/c CERN-Munich experiment on π^?p→π⁺π^?n. Compared to our previous publication [1] the final results show no important qualitative change but the numerical accuracy is considerably improved as a result of using modified techniques both in the fixed-momentum transfer analysis and in the phase-shift analysis. As a result, various diseases of our old solution have been cured. We analyze in some detail the coupling of the ?′(1600) to 2π, clearly seen in our solution. We argue that our technique has solved the phase-shift ambiguities previously obtained and we give details of our solution which has a very good x² to the data as well as a high numerical consistency with fixed-t, fixed-u and fixed-s analyticity.     

Lorentz invariance and origin of symmetries

We reconsider the role of Lorentz invariance in the dynamical generation of the observed internal symmetries. We argue that, generally, Lorentz invariance can be imposed only in the sense that all Lorentz noninvariant effects caused by the spontaneous breakdown of Lorentz symmetry are physically unobservable. The application of this principle to the most general relativistically invariant Lagrangian, with arbitrary couplings for all the fields involved, leads to the appearance of a symmetry and, what is more, to the massless vector fields gauging this symmetry in both Abelian and non-Abelian cases. In contrast, purely global symmetries are generated only as accidental consequences of the gauge symmetry.     

UTILIZATION OF TOOLS FOR SUCCESSFUL. TROUBLESHOOTING OF STRUCTURAL PROBLEMS

A structural failure problem was solved using an integrated and iterative program of testing and analysis. The steps taken in solving the problem were: analytical calculations; operational testing; qualifications of analytical results; problem identification; design of corrective action; and confirmatory testing.     

Implications of a natural fermion mass hierarchy

The hierarchical struture of the fundamental fermion mass spectra is required to arise in a non-accidental way from a unified model G_family with a horizontal symmetry factor group G_generation. A quark or lepton must then not be in the same representation of G_family as its anti-particle. Models for G_family of the type SU(4)_C × SU(2)_L × SU(2)_R are favoured over SU(5) or SO(10).