منابع مشابه
Preon Prophecies by the Standard Model
The Standard Model of quarks and leptons is, at first sight, nothing but a set of ad hoc rules, with no connections, and no clues to their true background. At a closer look, however, there are many inherent prophecies that point in the same direction: Compositeness in terms of three stable preons.
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V. Manasson has applied dissipative chaos theory to particle physics, deriving a simple relation between the fine structure constant and Feigenbaum delta constant. It is presented a preon model based on Manasson's theory. The model is intended as a naive toy one, as it makes use of unjustified assumptions, as e.g. the possibility of the existence of neither fermionic nor bosonic particles in 3+...
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It is shown that the recently proposed preon model which provides a unified origin of the diverse mass scales and an explanation of family replication as well as of inter–family mass–hierarchy, naturally possesses a Peccei–Quinn (PQ) symmetry whose spontaneous breaking leads to an automatic invisible axion. Existence of the PQ–symmetry is simply a consequence of supersymmetry and the requiremen...
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the effect of using model essays on the develpment of writing proficiency of iranina pre-intermediate efl learners
abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...
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ژورنال
عنوان ژورنال: Open Journal of Microphysics
سال: 2019
ISSN: 2162-2450,2162-2469
DOI: 10.4236/ojm.2019.92002