| Elementary Particle Physics: Multiparticle Aspects Softcover Repri Edition Contributor(s): Urban, Paul (Editor) |
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ISBN: 3709140366 ISBN-13: 9783709140369 Publisher: Springer OUR PRICE: $161.49 Product Type: Paperback - Other Formats Published: November 2013 |
| Additional Information |
| BISAC Categories: - Science | Physics - Nuclear - Science | Physics - Quantum Theory |
| Dewey: 539.72 |
| Series: Few-Body Systems |
| Physical Information: 910 pages |
| Descriptions, Reviews, Etc. |
| Publisher 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]. |
