نتایج جستجو برای: Pre/On-Line Planning

تعداد نتایج: 605056  

1997
Motoo Sekiguchi Hiroaki Wada

An interpretation that the HERA excess events are due to intermediate production and decay of composite leptoquarks in the left-right symmetric preon model is given. Because of the preon-line rule, expected to be valid well, the event-ratio of neutral to charged current interactions is predicted to be one. [email protected]

2008
T. R. Mongan

Our universe is apparently dominated by a vacuum energy/ cosmological constant. The holographic principle then indicates only a finite number of bits of information will ever be available to describe the universe. In that case, the Standard Model (SM) of particle physics based on continuum mathematics with infinite degrees of freedom can only approximate the underlying finite dimensional realit...

2002
Vladimir Yershov

A conceptual preon-based model of fermions is discussed. The preon is regarded as a topological object with three degrees of freedom in a dual three-dimensional manifold. It is shown that properties of this manifold give rise to a set of preon structures, which resemble three families of fermions. The number of preons in each structure is easily associated with the mass of a fermion. Being just...

2013
T. R. Mongan

The reason for baryon asymmetry in our universe has been an open question for many years. This note shows that the holographic principle requires a charged preon model underlying the Standard Model of particle physics and, in consequence, requires baryon asymmetry. The baryon asymmetry predicted by a specific charged preon model in our closed inflationary Friedmann universe is consistent with o...

Journal: :Nuclear Physics B 1984

2012
H. Stumpf

Unified nonlinear spinorfield models are self-regularizing quantum field theories in which all observable (elementary and non-elementary) particles are assumed to be bound states of fermionic preon fields. Due to their large masses the preons themselves are confined and below the threshold of preon production the effective dynamics of the model is only concerned with bound state reactions. In p...

2001
Hirofumi SENJU

Now we have, as simple elements of Nature, leptons, quarks, electromagnetic interactions, strong interactions based on the three colors, weak interactions due to the weak boson exchange and gravity. A main task of the present-day particle physics is to find internal relations among such simple elements and to disclose a more profound essence of Nature. In order to connect known interactions, it...

Journal: :Progress of Theoretical Physics 1983

1997
Enrico Predazzi

The Higgs mechanism is the favourite cure for the main problem with electroweak unification, namely how to reconcile a gauge theory with the need for massive gauge bosons. This problem does not exist in preon models for quark and lepton substructure with composite Z 0 and W s, which, consequently, also avoid all other theoretical complications and paradoxes with the Higgs mechanism. We present ...

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