Quark-lepton compositeness: a three-body scenario

Mitra, A. N. (1989) Quark-lepton compositeness: a three-body scenario Pramana - Journal of Physics, 32 (4). pp. 573-581. ISSN 0304-4289

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Official URL: http://www.ias.ac.in/j_archive/pramana/32/4/573-58...

Related URL: http://dx.doi.org/10.1007/BF02845988

Abstract

The Harari-Shupe model of quarks and leptons is viewed, not as a gauge theory, but as a quantum-mechanical three-body problem of the extreme relativistic type involving massless preons. Considerations based on S3-symmetry in the available degrees of freedom (spin, isospin, space and hypercolour) are employed in conjunction with a spin-dependence ansatz on the three-preon forces (∑ aμv(1)σ(2)σλμ(3)) for an understanding of the three basic issues of (i) spin-1/2, (ii) generation structure and (iii) steeply rising mass patterns of quark-lepton families. The ∑a-dynamics is compatible with the interpretation of colour as a manifestation of S3-symmetry, as envisaged in the original Harari-Shupe proposal, while the interpretation of the generation structure devolves on the role of a certain quantum number N which takes on three different classes of values (3n, 3n ± 1;n = 0, 1, 2, ...) according to the S3-symmetry of the spatial wavefunction.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Quark-lepton Composites; Harari-Shupe Model; lepton-quark Substructure; Preon Interaction
ID Code:34436
Deposited On:09 Apr 2011 07:58
Last Modified:17 May 2016 17:19

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