With the standard fibre being a coset manifold, the transformation of a connection form in a fibre bundle under the action of the isometry group includes a dependence on the fibre coordinate. Elimination of the fibre coordinate from the transformation rule implies that the standard fibre is a Lie group and that the bundle is a principal bundle. The dependence on the fibre coordinate is consider...

The formation length of particles produced in the relativistic collisions of hadrons and nuclei has relevance to fundamental principles of physics at small interaction distances. The relation is expressed by a z scaling observed in the differential cross sections for the inclusive reactions at high energies. The scaling variable reflects the length of the elementary particle trajectory in terms...

In this lecture, we present a brief description of properties of the neutron. We describe its internal properties: life time, mass, charge, magnetic and electric dipole moments... Particular attention will be paid to two most important characteristics of the neutron – its life time and electric dipole moment – both of them are now studied in a few different experiments. Moreover, the measuremen...

String theory avoids the ultraviolet infinities that arise in trying to quantize gravity. It is also more predictive than conventional quantum field theory, one aspect of this being the way that it contributed to the emergence of the concept of “supersymmetry” of particle interactions. There are hints from the successes of supersymmetric unified theories of particle interactions that supersymme...

1. Abstract The most fundamental to the elementary particle is the mass they posses and it would be of importance to explore a possible relationship amongst their masses. Here, an attempt is made to investigate this important aspect irrespective of their nature or scheme of classification. We show that there exists a striking tendency for successive mass differences between elementary particles...

Cosmic ray events above 10eV are on the verge of confronting fundamental particle physics. The neutrino is the only candidate primary among established particles capable of crossing 100 Mpc intergalactic distances unimpeded. We argue that consistency with the Standard Model at low energies, together with large interactions at high energies, directly indicates new physics of massive spin-2 excha...

The idea that the elementary particles might have the symmetry of knots has had a long history. In any modern formulation of this idea, however, the knot must be quantized. The present review is a summary of a small set of papers that began as an attempt to correlate the properties of quantized knots with empirical properties of the elementary particles. As the ideas behind these papers have de...

ABSTR4CT We consider the production of pion pairs in the Coulomb field by photons and pions, a method which can be used to study the 7r-r interaction. Simple general formulas are given for the angular correlations of the 71 pairs, the behavior of the cross section with angle and energy, and the effects of the p " coherent production background.. The question of the nature value of the T-T inter...

We study the sensitivity of the processes e+e− → lν̄l qq̄′ at LEP2 energies on the non-standard trilinear gauge couplings (TGC), using the optimal observables method. All relevant leading logarithmic corrections to the tree-order cross section, as well as experimental resolution effects have been studied. Taking into account correlations among the different TGC parameters we show that the limits ...