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Production of nucleon isobars by 7.1 GeV/c protons

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Il Nuovo Cimento (1955-1965)

Summary

We have measured the missing mass spectrum of nucleon isobars produced in the reaction p+p→+p by 7.1 GeV/c protons incident on a liquid-hydrogen target. Scintillation counters detected the recoil protons after momentum analysis. Cross-sections were obtained for production of isobars of mass 1238, 1512 and 1688 MeV at momentum transfers of 0.09, 0.15, 0.24, 0.33, and about 5 (GeV)2. At low momentum transfers, the spectrum has additional structure at a mass of about 1430 MeV. TheT=1/2 isobar production cross-sections at |t|=5 (GeV)2 are comparable with the elastic scattering cross-section.

Riassunto

Si è misurato lo spettro della massa mancante degli isobari nucleonici prodotti nella reazione p+p→+p con protoni di 7.1 GeV/c incidenti su un bersaglio di idrogeno liquido. Contatori a scintillazione rivelavano i protoni di rinculo dopo l’analisi degli impulsi. Si sono ottenute le sezioni d’urto per la produzione di isobari di massa 1238, 1512 e 1688 MeV con momento trasferito di 0.09, 0.15, 0.24, 0.33 e circa 5 (GeV)2. A piccoli momenti trasferiti lo spettro ha una struttura addizionale ad una massa di circa 1430 MeV. Le sezioni d’urto per la produzione di isobariT=1/2 a |t|=5 (GeV)2 sono confrontabili con le sezioni d’urto dello scattering elastico.

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Author notes

  1. W. M. Layson

    Present address: Pan American World Airways, Guided Missle Range Division, Patrick Air Force Base, Fla.

Authors and Affiliations

  1. Lawrence Radiation Laboratory, University of California, Berkeley, Cal.

    C. M. Ankenbrandt (National Science Foundation predoctoral fellow), A. R. Clyde, Bruce Cork, D. Keefe, L. T. Kerth, W. M. Layson & W. A. Wenzel

Authors
  1. C. M. Ankenbrandt
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  2. A. R. Clyde
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  3. Bruce Cork
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  4. D. Keefe
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  5. L. T. Kerth
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  6. W. M. Layson
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  7. W. A. Wenzel
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Additional information

This work was done under the auspices of the U. S. Atomic Energy Commission.

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Ankenbrandt, C.M., Clyde, A.R., Cork, B. et al. Production of nucleon isobars by 7.1 GeV/c protons. Nuovo Cim 35, 1052–1060 (1965). https://doi.org/10.1007/BF02735524

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  • DOI: https://doi.org/10.1007/BF02735524

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