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A measurement of the magnetic moment of the Σ+-hyperon

Измеренке момента Σ+-hyperon гиперона

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

The magnetic moment of the Σ+-hyperon has been measured to be (3.5±1.2) nuclear magnetons by observing the precession of the polarization vector in a pulsed magnetic field. The polarized hyperons were produced in a liquid-hydrogen target by a beam of 1.17 Ge V/c π+-meson and their decay was detected in pellicles of nuclear emulsion. The final direction of the polarization was determined from the angular distribution of the decay Σ+→pπ0.

Riassunto

Si riporta una misura del momento magnetico dell’iperone Σ+-hyperon effettuata osservando la precessione del vettore polarizzazione in un campo magnetico impulsato. Il valore trovato è (3.5±1.2) magnetoni nucleari. Gli iperoni polarizzati sono stati prodotti inviando un fascio di mesoni π+-meson di 1.17 GeV/c in idrogeno liquido ed il loro decadimento è stato rivelato in emulsione nucleare. La direzione finale del vettore polarizzazione è stata determinata per mezzo della distribuzione angolare del decadimento Σ+→pπ0.

Резюме

Было измерено, что магнитный момент Σ+-hyperon гиперона равен (3.5±1.2) ядерных магнетонов, путем наблюдения прецессии вектора поляризации в пульси-рующем магнитним поле. Поляризованные гипероны рождаются в жидкостно-водородной мишени, посредством пучка π+-meson мезонов с импульсом 1.17 ГэВ/с, и их распад определяется в пленках ядерной эмульсии. Окончательное направление поляризации определяется из углового распределения распада Σ+→pπ0.

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Author information

Author notes

  1. D. Evans

    Present address: Department of Physics, University of Durham, Durham City

  2. P. Rosselet

    Present address: Université de Lausanne, Lausanne, Switzerland

  3. W. Toner

    Present address: Stanford Linear Accelerator Center, Stanford, Cal.

  4. K. Green

    Present address: Department of Physics, University of Washington, Seattle, Wash.

  5. P. Tolun

    Present address: Department of Physics, Middle East Technical University, Ankara

  6. N. A. Whyte

    Present address: Department of Physics, University of East Anglia, Norwich

Authors and Affiliations

  1. CERN, Geneva

    J. Combe, E. Dahl-Jensen, N. Doble, D. Evans, L. Hoffmann, P. Rosselet & W. Toner

  2. H. H. Wills Physics Laboratory, University of Bristol, Bristol

    W. M. Gibson, K. Green, P. Tolun & N. A. Whyte

  3. Laboratoire de Physique Nucléaire de l’Université, Lausanne

    G. Charrière, M. Gailloud, B. Wanders & R. Weill

  4. Max-Planck-Institut für Physik, Munich

    C. Carathanassis, W. Püschel, V. Scheuing & R. Settles

  5. Istituto di Fisica dell’Università, Roma

    G. Baroni, A. Manfredini, G. Romano & V. Rossi

  6. Sezione di Roma, Istituto Nazionale di Fisica Nucleare, Roma, Italia

    G. Baroni, A. Manfredini, G. Romano & V. Rossi

Authors
  1. J. Combe
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  2. E. Dahl-Jensen
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  3. N. Doble
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  4. D. Evans
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  5. L. Hoffmann
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  6. P. Rosselet
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  7. W. Toner
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  8. W. M. Gibson
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  9. K. Green
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  10. P. Tolun
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  11. N. A. Whyte
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  12. G. Charrière
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  13. M. Gailloud
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  14. B. Wanders
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  15. R. Weill
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  16. C. Carathanassis
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  17. W. Püschel
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  18. V. Scheuing
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  19. R. Settles
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  20. G. Baroni
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  21. A. Manfredini
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  22. G. Romano
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  23. V. Rossi
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Combe, J., Dahl-Jensen, E., Doble, N. et al. A measurement of the magnetic moment of the Σ+-hyperon. Nuovo Cimento A (1965-1970) 57, 54–68 (1968). https://doi.org/10.1007/BF02824436

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  • DOI: https://doi.org/10.1007/BF02824436

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