Neutral-current effects in quantum-chromodynamic four-jet production

We investigate the influence of parity-violating neutral currents on QCD four-jet production in e/sup +/e/sup -/ annihilation. Explicit expressions for the squared matrix elements in general weak models are presented. It is shown that in the standard model axial-vector currents change the acoplanari...

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Veröffentlicht in:	Phys. Rev. D; (United States) 1983-04, Vol.27 (7), p.1495-1511
Hauptverfasser:	Clavelli, L., Gehlen, G. v.
Format:	Artikel
Sprache:	eng
Schlagworte:	645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties 645302 - High Energy Physics- Particle Invariance Principles & Symmetries- Applications to Electromagnetic & Weak Interactions- (-1987) ALGEBRAIC CURRENTS ANGULAR DISTRIBUTION ANNIHILATION AXIAL-VECTOR CURRENTS BASIC INTERACTIONS CHIRALITY COMPOSITE MODELS CURRENTS DISTRIBUTION ELECTROMAGNETIC INTERACTIONS ELECTRON-POSITRON INTERACTIONS FIELD THEORIES INTERACTIONS INVARIANCE PRINCIPLES JET MODEL LEPTON-LEPTON INTERACTIONS MATHEMATICAL MODELS NEUTRAL CURRENTS P INVARIANCE PARTICLE INTERACTIONS PARTICLE MODELS PARTICLE PROPERTIES PARTON MODEL PHYSICS OF ELEMENTARY PARTICLES AND FIELDS QUANTUM CHROMODYNAMICS QUANTUM FIELD THEORY
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Zusammenfassung:	We investigate the influence of parity-violating neutral currents on QCD four-jet production in e/sup +/e/sup -/ annihilation. Explicit expressions for the squared matrix elements in general weak models are presented. It is shown that in the standard model axial-vector currents change the acoplanarity distributions normalized to the total cross section only at the 10/sup -3/ level. Chirality effects of the four jets are also strongly suppressed. However, angular asymmetries of the acoplanarity distributions are found to be 20--60 %.
ISSN:	0556-2821
DOI:	10.1103/PhysRevD.27.1495