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Il Nuovo Cimento (1955-1965)

, Volume 24, Issue 1, pp 170–180 | Cite as

Proton-antiproton annihilation into electrons, muons and vector bosons

  • A. Zichichi
  • S. M. Berman
  • N. Cabibbo
  • R. Gatto
Article

Summary

The possibility of achieving relatively high intensity antiproton beams has prompted some considerations on the rather rare annihilation channels of the proton-antiproton system. We propose i) to study the two-electron mode as a means of investigating the electromagnetic structure of the proton for time like momentum transfers; ii) to study the two-muon mode and compare with the two-electron mode to investigate whether the muon behaves like a heavy electron for large time like momentum transfers; iii) to investigate the existence of weak vector bosons by the modes p + p → B + B and p + p → B + π. Although no precise theoretical predictions can be made, crude estimates indicate that the cross-section for these four channels could be roughly of the same order of magnitude.

Riassunto

La possibilità di ottenere fasci di antiprotoni di intensità relativamente alta ha suggerito alcune considerazioni sui canali di annichilazione del sistema protone antiprotone, che sono alquanto rari. Ci proponiamo: i) di studiare il modo a due elettroni come mezzo per investigare la struttura elettromagnetica del protone per trasferimenti di impulso di tipo temporale; ii) di studiare il modo a due muoni e confrontarlo con il modo a due elettroni per vedere se il muone si comporta come un elettrone pesante per grandi trasferimenti di impulsi di tipo temporale; iii) ricercare l’esistenza di bosoni vet toriali deboli con i modi p + p → B + B e p + p → B + π. Sebbene non si possano fare precise predizioni teoriche, stime grossolane indicano che la sezione d’urto per questi quattro canali dovrebbe essere approssimativamente dello stesso ordine di grandezza.

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Copyright information

© Società Italiana di Fisica 1962

Authors and Affiliations

  • A. Zichichi
    • 1
  • S. M. Berman
    • 1
  • N. Cabibbo
    • 2
    • 3
  • R. Gatto
    • 2
    • 3
  1. 1.CERNGeneva
  2. 2.Rorna e CagliariUniversità degli StudiItalia
  3. 3.Laboratori Nazionali di Frascati del CNENRomaItalia

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