Elementary Particle Physics: Multiparticle Aspects
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Bibliographic Details
Main Author: Urban, Paul (Author)
Format: Electronic eBook
Language:English
Published: Vienna Springer Vienna 1972
Series:Acta Physica Austriaca, Proceedings of the XI. Internationale Universitätswochen für Kernphysik 1972 der Karl-Franzens-Universität Graz at Schladming (Steiermark, Austria) 21st February–4th March 1972 9/1972
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Online Access:Volltext
Item Description:The observation of the scaling properties of the structure functions w and vw of deep inelastic electron 1 2 nucleon scattering [1]+ has been taken by many people as an indication for an approximate scale invariance of the world. It was pointed out by Wilson [2], that in many field theories it is possible to assign a dimension d to every fundamental field, which proves to be a conserved quantum number as far as the most singular term of an operator product expansion at small distances ((x-y) +a) is con- JJ cerned++. Later it was shown, at the canonical level, that in many field theories the dimension of a field seems to be a c:pod quantum number even in the terms less singular at small (x-y) , as long as they all belong to the strongest \l light cone singularity (i. e. (x-y)2+a) [3]. The assumption that this type of scale invariance on the light cone be present in the operator product ex­ pansion of two electromagnetic currents has provided us with a rather natural explanation of the observed scaling phenomena. We should like to mention, however, that this ex­ planation cannot account for the precocity with which scaling is being observed experimentally in energy regions, in which resonances still provide prominent contributions to the final states [4]
Physical Description:1 Online-Ressource (IX, 910 p)
ISBN:9783709140345
9783709140369
ISSN:0177-8811
DOI:10.1007/978-3-7091-4034-5

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