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Simple models for associated production in proton-proton collisions

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Il Nuovo Cimento (1955-1965)

Summary

The process p+p→Λ0+K++p is investigated by means of two simple models in which only the contribution of poles due to the exchange of an intermediate π0-meson or K+-meson respectively is taken into account. The total cross section is then calculated in terms of the total cross-sections for simpler processes. Numerical values are given for an energy of 3 GeV of the incident proton in the l.s.

Riassunto

Il processo p+p→Λ0+K++p è studiato per mezzo di due semplici modelli in cui si tiene conto soltanto del contributo dei poli associati allo scambio di un mesone π0 o K+ rispettivamente. È calcolata quindi la sezione d’urto totale, che risulta legata alla sezione d’urto totale per processi più semplici. Si danno valori numerici per una energia di 3 GeV nel s.l. del protone incidente.

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References

  1. SeeP. Baumel, G. Harris, J. Orear andS. Taylor:Phys. Rev.,108, 1322, (1957);D. Berley andG. B. Collins:Phys. Rev.,112, 614 (1958);J. Hornbostel, E. O. Salant andG. T. Zorn:Phys. Rev.,112, 1311 (1958). These papers contain reference to earlier work.

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  2. Berley andCollins’ value is σtot=(0.04±0.06) mb (including also Σ0 and Σ+ production);Baumel and coll. have measured the differential cross-section at a certain energy and angle of the final K+, and derived the total cross-section by multiplying by statistical factors (assuming a constant interaction matrix element). They get σtot=0.21 mb.

  3. E. Ferrari:Nuovo Cimento,13, 1285 (1959).

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  4. G. F. Chew andF. E. Low:Phys. Rev.,113, 1640 (1959).

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  5. O. R. Price, D. H. Stork andH. K. Ticho:Phys. Rev. Lett.,1, 212 (1958). See also theKiev Conf. Report on the Interaction of Strange Particles byL. W. Alvarez.

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  6. See theReports of the International Conference on High Energy Physics at CERN (1958), p. 323.

  7. See the above-mentioned Report, p. 148.

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Ferrari, E. Simple models for associated production in proton-proton collisions. Nuovo Cim 15, 652–657 (1960). https://doi.org/10.1007/BF02724996

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  • DOI: https://doi.org/10.1007/BF02724996

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