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Inclusive e+e− annihilation into hadrons and neutral weak currents

Инклюэивная аннигиляция e+e− в адроны и нейтральные слабые токи

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Il Nuovo Cimento A (1965-1970)

Summary

The inclusive production ofn spinless hadrons is studied in e+e− collisions for polarized incident beams. γ and Z exchanges are taken into account, the finite width of Z is also included. Effects of the γZ interference are aboutO(q 2/m 2Z ) at high energies. ZZ effects areO(103) in the resonance region and suppress the γγ, γZ terms. The cross-section contains several angular and polarization asymmetries. In going to the Z pole, rates and asymmetries considerably grow as shown by model calculations.

Riassunto

Si studia la produzione inclusiva din adroni senza spin in collisioni e+e− per fasci incidenti polarizzati. Si prendono in considerazione gli scam bi di γ e Z, è anche inclusa l’ampiezza finita di Z. Gli effetti dell’interferenza γZ sono circaO(q 2/m 2Z ) ad alte energie. Gli effetti ZZ sonoO(103) nella regione di risonanza e sopprimono i termini γγ e γZ. La sezione d’urto contiene parecchie asimmetrie angolari e di polarizzazione. Andando varso il polo di Z, i rapporti e le asimmetrie crescono considerevolmente come mostrato dai calcoli di modello.

Реэюме

Исследуется инклюэивное рождениеп адронов с нулевым спином в e+e− соударениях в случае поляриэованных падаюших пучков. Учитываются γ и Z обмены, а также конечная щирина Z. Эффекты γZ-интерференции составляют околоO(q 2/m 2Z ) при высоких знергиях. ZZ-зффекты составляютO(103) в реэонансной области и подавляют γγ-, γZ-члены. Поперечное сечение содержит угловую и поляриэационную асимметрии. Иэ модельных вычислений следует, что при приближении к Z-полюсу интенсивности и асимметрии сушественно воэрастают.

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Authors and Affiliations

  1. Institute for Theoretical Physics, Roland Eötvös University, Budapest

    E. Lendvai & G. Pócsik

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  1. E. Lendvai
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  2. G. Pócsik
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Lendvai, E., Pócsik, G. Inclusive e+e− annihilation into hadrons and neutral weak currents. Nuov Cim A 45, 50–58 (1978). https://doi.org/10.1007/BF02729914

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  • DOI: https://doi.org/10.1007/BF02729914

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