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Production of kaons and baryon-antibaryons at a few TeV energy

Рождение каонов и барион-антибарионов при энергиях в несколько ТэВ

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Il Nuovo Cimento A (1965-1970)

Summary

Available emulsion data on nuclear interactions produced by neutral and charged secondary particles emitted from jets with a median primary energy of about 5 TeV have been analysed to deduce information on the proportion of kaons and baryon-antibaryons among the created particles. Using a value of 0.15 +0.05−0.02 for the proportion of baryon-antibaryons (charged and neutral), recently obtained by Tonwaret al., we deduce a value of 0.18 +0.05−0.07 for the proportion of charged and neutral kaons at primary energies in the region of 5 TeV. Kaons and baryon-antibaryons together constitute 0.33±0.07 of all created particles. It is shown that the existing experimental information is consistent with these results.

Riassunto

Si sono analizzati i dati disponibili delle emulsioni riguardanti le interazioni nucleari prodotte da particelle secondarie neutre e cariche emesse da getti con energia primaria media di circa 5 TeV per dedurne informazioni sulla proporzione di kaoni e barioniantibarioni fra le particelle create. Usando il valore di 0.15 +0.05−0.02 per la proporzione di barioni-antibarioni (carichi e neutri), ottenuto recentemente da Tonwaret al., si deduce un valore di 0.18 +0.05−0.07 per la proporzione di kaoni neutri e carichi ad energie primarie nella regione dei 5 TeV. I kaoni ed i barioni-antibarioni costituiscono assieme 0.33±0.07 di tutte le particelle create. Si mostra che le informazioni sperimentali esistenti concordano con questi risultati.

Резюме

Для получения информации об отношении каонов и барион-антибарионов среди рожденных частиц был проведен анализ имеющихся эмульсионных данных по ядерным взаимодействиям, обусловленным нейтральными и заряженными вторичными частицами, рожденными ливнями со средней начальной энергией около 5 ТэВ. Используя величину 0.15 +0.05−0.02 для отношения барион-антибарионов (заряженные и нейтральные), которая была недавно получена Тонвором и др., мы выводим величину 0.18 +0.05−0.07 для отношения заряженных и нейтральных каонов при начальных энергиях в области 5 ТэВ. Каоны и барион-антибарионы вместе составляют 0.33±0.07 от всех рожденных частиц. Показывается, что существующая экспериментальная информация согласуется с этими результатами.

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Authors and Affiliations

  1. Tata Institute of Fundamental Research, Bombay

    P. K. Malhotra & R. Raghavan

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  1. P. K. Malhotra
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  2. R. Raghavan
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Malhotra, P.K., Raghavan, R. Production of kaons and baryon-antibaryons at a few TeV energy. Nuov Cim A 9, 75–84 (1972). https://doi.org/10.1007/BF02823565

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