Summary
A summary has been made of all the available data on the charge ratio of cosmic-ray muons at energies above 50 GeV. The data have been combined into zenith-angle bins and average values have been plotted for mean angles of approximately 0°, 60° and 80°. Following the method outlined by MacKeown and Wolfendale an approximate analysis has been made to determine limits on the ratio of kaons to pions (K/π) and K+/K− for energetic secondaries produced in the interactions of primary particles in the energy range (500÷10000) GeV. It is shown that there is no evidence for a dramatic change in these quantities over the next decade of energy above that available at the Intersecting Storage Ring experiment at CERN.
Riassunto
Si sono riuniti tutti i dati disponibili sul rapporto di carica dei muoni dei raggi cosmici ad energie sopra i 50 GeV. Si sono raggruppati i dati per valori dell'angolo zenitale e si sono riportati graficamente i valori medi per angoli medi di approssimativamente 0°, 60° e 80°. Seguendo il metodo indicato da MacKeown e Wolfendale si è fatta un'analisi approssimata per determinare dei limiti del rapporto fra kaoni e pioni (K/π) e K+/K− per secondari energetici prodotti nelle interazioni fra particelle primarie nell'intervallo di energia da 500 a 10000 GeV. Si fa vedere che non ci sono segni evidenti di un drastico cambiamento di queste quantità nella successiva decade di valori dell'energia oltre quella disponibile per gli esperimenti ISR al CERN.
Резюме
Приводится обзор всех имеющихся данных для зарядового отношения мюонов космических лучей с энергиями выше 50 ГэВ. Эти данные объединяются для различных зенитных углов. Средние значения вычерчиваются для средних углов 0°, 60° и 80°. Следуя методу МакКеовна и Волфендала, приводится приближенный анализ, чтобы определить пределы для отношения каонов к пионам (K/π) и K+/K− для энергичных вторичных частиц, рожденных при взаимодействии первичных частиц в области энергий (500÷10000) ГэВ. Показывается, что не обнаружено существенного изменения этих величин при увеличении энергии в десять раз по сравнению с имеющейся энергией в ЦЕРНе в эксперименте на встречных пучках.
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Ng, L.K., Wolfendale, A.W. Charge ratio of energetic cosmic-ray muons as a function of zenith angle. Nuov Cim A 22, 251–262 (1974). https://doi.org/10.1007/BF02813437
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DOI: https://doi.org/10.1007/BF02813437