Il Nuovo Cimento (1955-1965)

, Volume 31, Issue 3, pp 525–540 | Cite as

The meson multiplicity in nucleon-nucleon collisions at 3 000 GeV

  • C. B. A. McCusker
  • L. S. Peak


The mean multiplicity of charged particles in nucleon-nucleon collisions at 2 800 GeV has been determined by two different methods. The two methods give results in good agreement with each other and with Wilson cloud chamber results. The weighted mean from this experiment is 〈ns〉=10.8±0.8. The mean energy has been found by two different methods, the second of which involves a determination of the cosmic-ray proton energy spectrum from 1010 to 1016 eV. The change in the average multiplicity in nucleon-nucleon collisions from 16 GeV to 2 800 GeV can be well approximated by a law 〈ns〉=4.1 logE/log 16 whereE is the incident proton energy in GeV.


Si è determinata con due metodi differenti la molteplicità media delle particelle cariche nelle collisioni nucleone-nucleone di 2 800 GeV. I due metodi dànno risultati che concordano fra loro e con i risultati ottenuti con la camera a nebbia di Wilson. La media ponderata in questo esperimento è 〈ns〉=10.8±0.8. Si è trovata l’energia media con due metodi diversi, il secondo dei quali richiede la determinazione dello spettro d’energia dei protoni dei raggi cosmici da 1010 a 1016 eV. La variazione della molteplicità media nelle collisioni nucleone-nucleone da 16 GeV a 2 800 GeV si può approssimare bene con la legge 〈ns〉=4.1 logE/log 16, doveE è l’energia dei protoni incidenti in GeV.


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Copyright information

© Società Italiana di Fisica 1964

Authors and Affiliations

  • C. B. A. McCusker
    • 1
  • L. S. Peak
    • 1
  1. 1.Falkiner Nuclear Department, School of PhysicsUniversity of SydneySydney

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