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Cut-corrected exchange degeneracy and the KN-\(\bar K\)N CEX cross-section inequalityCEX cross-section inequality

Раэреэ, исправляюший обменное вырождение, и неравенство поперечных сечений рассеяния KN переэарядкой

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Il Nuovo Cimento A (1971-1996)

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Summary

Consequences of cut-corrected exchange degeneracy are examined in the context of a model in which exchange-degenerate poles satisfying factorization andSU 3 are « corrected » by multiple-scattering « unitarity » cuts. Satisfactory agreement with the unequal KN and KN CEX cross-sections is obtained above 2 GeV/c for moderatet-values. RR cuts, fixed by the pole terms, are essential. It is shown that, contrary to recent contentions, the energy dependence of the cross-section difference is easily accommodated in this cut scheme.

Riassunto

Nel contesto di un modello i cui poli degeneri per scambio e che soddisfano la fattorizzazione edSU 3 sono « corretti » con tagli di « unitarietà » dello scattering multiplo, si esaminano le conseguenze della degenerazione di scambio corretta nel taglio. Al di sopra di 2 GeV/c si ottiene un accordo soddisfacente con le sezioni d’urto di scambio di carica KN e N disuguali per valori dit moderati. Tagli RR, fissati dai termini polari, sono essenziali. Si mostra che, contrariamente ad alcune recenti affermazioni, si può facilmente accogliere in questo schema di taglio la dipendenza dall’energia della differenza delle sezioni d’urto.

Реэюме

Иэучаются следствия раэреэа, исправляюшего обменное вырождение, в свяэи с моделью, в которой полюса обменного вырождения, удовлетворяюшие факториэации и SU3, ?исправляются? благодаря ?унитарным? раэреэам многократного рассеяния. Получается удовлетворительное согласие для неравных поперечных сечений рассеяния KN иN с переэарядкой в области 2 ГзВ/с для средних эначений t. RR раэреэы, фиксированные благодаря полюсным членам, окаэываются сушественными. Покаэывается, что, в противоположность недавним утверждениям, в такой схеме раэреэа знергетическая эависимость раэности поперечных сечений легко приводится в соответствие.

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References

  1. For a review and discussion of the data, seeK. W. Lai andJ. Louie:Contribution to the Regge-Pole Conference, Irvine, Cal., Dec. 5–6, 1969.

  2. W. Rarita andB. M. Schwartzschild:Phys. Rev.,162, 1378 (1967);R. C. Arnold:Symposium on Regge Poles (Argonne, 1966).

    Article  ADS  Google Scholar 

  3. D. Cline, J. Matos andD. D. Reeder:Phys. Rev. Lett.,23, 1318 (1969).

    Article  ADS  Google Scholar 

  4. P. R. Auvil andF. Halzen: CERN preprint TH. 1113 (1969).

  5. P. R. Auvil, F. Halzen, C. Michael andJ. Weyers:Phys. Lett.,31 B, 303 (1970).

    Article  ADS  Google Scholar 

  6. For example,B. J. Hartley, R. W. Moore andK. J. M. Moriarty:Phys. Rev.,187, 1921 (1969); also Imperial College preprint ICTP/69/2.

    Article  ADS  Google Scholar 

  7. R. C. Arnold andM. L. Blackmon:Phys. Rev.,176, 2082 (1968);C. Michael:Nucl. Phys.,8 B, 431 (1968);M. L. Blackmon andG. R. Goldstein:Phys. Rev.,179, 1480 (1969);M. L. Blackmon:Phys. Rev.,178, 2385 (1969);C. Lovelace:Nucl. Phys.,12 B, 253 (1969).

    Article  ADS  Google Scholar 

  8. C. Michael:Nucl. Phys.,13 B, 645 (1969).

    ADS  Google Scholar 

  9. Cut-corrected exchange degeneracy provides an interpretation, consistent with the available data, of line-reversed reaction cross-section differences and their energy dependences.P. J. O’Donovan; Arizona State University preprint ASU-HEP-16 (1970).

  10. Details differ among the various models. For a discussion of such models, seeR. J. Rivers:Nuovo Cimento,63 A, 697 (1969). For a discussion of interpretation procedures, seeP. J. O’Donovan:Phys. Rev.,185, 1902 (1969).

    Article  ADS  Google Scholar 

  11. R. J. Rivers:Nuovo Cimento,57 A, 174 (1968).

    Article  ADS  Google Scholar 

  12. P. G. O. Freund: Invited talk,Proceedings of the Boulder Conference on High-Energy Physics (Boulder, Colo., 1969).

  13. F. Henyey, G. L. Kane, J. Pumplin andM. H. Ross:Phys. Rev.,182, 1579 (1969).

    Article  ADS  Google Scholar 

  14. M. Baker andM. Blankenbecler:Phys. Rev.,128, 415 (1962).

    Article  ADS  MathSciNet  Google Scholar 

  15. M. Jacob andS. Pokorski:Nuovo Cimento,61 A, 233 (1969).

    Article  ADS  Google Scholar 

  16. R. Rivers andJ. Scanio:Phys. Rev.,188, 2170 (1969).

    Article  ADS  Google Scholar 

  17. M. Jacob andG. C. Wick:Ann. of Phys.,7, 404 (1959).

    Article  ADS  Google Scholar 

  18. V. Singh:Phys. Rev.,129, 1889 (1963).

    Article  ADS  Google Scholar 

  19. A. Ahmadzadeh:Phys. Rev. Lett.,16, 952 (1966);V. Barger andM. Olsson:Phys. Rev.,146, 1080 (1966).

    Article  ADS  Google Scholar 

  20. D. D. Reeder andK. V. L. Sarma:Phys. Rev.,172, 1566 (1968).

    Article  ADS  Google Scholar 

  21. A small reduction in RR contributions would favor a nonflipd/f ratio in keeping with that obtained in the total cross-section Regge fits of ref. (21). (d/f ≈ − 0.5).

    Article  ADS  Google Scholar 

  22. R. C. Arnold:Phys. Rev.,153, 1523 (1967).

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Department of Physics, Arizona State University, Tempe, Ariz

    P. J. O’Donovan

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  1. P. J. O’Donovan
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To speed up publication, the authors of this paper have agreed to not receive the proofs for correction.

Research supported in part by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under Grant No. AF-AFOSR-7125-977.

« Strong » exchange degeneracy further requires that the polarizations vanish.

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O’Donovan, P.J. Cut-corrected exchange degeneracy and the KN-\(\bar K\)N CEX cross-section inequalityCEX cross-section inequality. Nuov Cim A 4, 229–242 (1971). https://doi.org/10.1007/BF02728464

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