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Hadron-hadron interactions with large transverse momenta

Адрон-адронные вэаимодействия с больщими передаваемыми импульсами

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Il Nuovo Cimento A (1965-1970)

Summary

An empirical scaling formula is proposed for the largetransverse-momentum hadron production process. The formula implies that the mean transverse momentum 〈P T〉 of the produced hadrons increases with incident energy. Our formula indicates that large-P T hadrons originate from highly localized interaction regions, being at high temperature.

Riassunto

Si propone una formula empirica della variazione di scala per il processo di produzione di adroni con grande impulso trasversale. La formula implica che l’impulso trasversale medio 〈P T 〉 degli adroni prodotti aumenti con l’energia incidente. La nostra formula indica che gli adroni conP T grande hanno origine dalle regioni di interazione altamente localizzate, essendo ad alta temperatura.

Реэюме

Предлагается змпирическая формула скейлинга для процесса рождения адронов с больщими передаваемыми импульсами. Предложенная формула пред-полагает, что средний переданный импульс 〈P T〉 рожденных адронов увеличивается с знергией падаюших частиц. Наща формула укаэывает, что адроны с больщими РT обраэуются иэ областей сильно локалиэованного вэаимодействия с высокой температурой.

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Literatur

  1. CERN-Columbia-Rockfeller Group:Phys. Lett.,46 B, 471 (1973).

    Google Scholar 

  2. British-Scandinavian-ISR Group:Phys. Lett.,44 B, 521, 527 (1973).

    Google Scholar 

  3. Saclay-Strasburg Group:Phys. Lett.,44 B, 537 (1973).

    Google Scholar 

  4. Chicago-Princeton Group:Phys. Rev. Lett.,31, 1426 (1973).

    Article  ADS  Google Scholar 

  5. NAL-Illinois Group:Phys. Rev. Lett.,32, 24 (1974).

    Article  Google Scholar 

  6. The smallness of theP T in a wide energy region has been pointed out byJ. Nishimura:Proceedings of the VI Rochester Conference, Vol.4 (1956), p. 46, and experimentally confirmed by theCo-Operative Emulsion Chamber Group in Japan:Suppl. Nuovo Cimento,8, 761 (1958). We can find a number of experimental and theoretical works on the smallness ofP T : for example, 30 GeV region:J. V. Allaby, F. Binon, A. N. Diddens, P. Duteil, A. Klovning, R. Meunier, J. P. Peigneux, E. J. Sacharidis, K. Schlupmarm, M. Spighel, J. P. Stroot, A. M. Thorndike andA. M. Wetherell: CERN Yellow Report 70-12 (1960); ISR region:P. Capiluppi, G. Giacomelli, A. M. Rossi, G. Vannini andA. Busseir:Nucl. Phys.,70 B, 1 (1974); Landau model:G. A. Milecin andI. L. Rosental:Suppl. Nuovo Cimento,8, 761 (1958). For the smallness of the K/π ratio ∼0.1: for example, cosmic-ray region: ICEFCollaboration:Suppl. Nuovo Cimento,1, 1039 (1963); ISR region:G. Cocconi:Contemp. Phys.,14, 167 (1973).

    Google Scholar 

  7. CERN-Columbia-Rockfeller Group:Phys. Lett.,56 B, 482 (1975).

    Google Scholar 

  8. CERN-Columbia-Rockfeller Group:Phys. Lett.,51 B, 306, 311 (1974);Pisa-Stony Brook Group:Phys. Lett.,50 B, 396 (1974); CCHKCollaboration: CERN preprint, D.Ph.II/Phys. 75-31 (1975).

    Google Scholar 

  9. CERN-Holland-Lancaster-Manchester Collaboration:Nucl. Phys.,73 B, 40 (1974);CERN-Pisa-Heidelberg-Karlsruhe Collaboration:Phys. Lett.,55 B, 341 (1975).

    Google Scholar 

  10. Chacaltaya Emulsion Chamber Group:Proceedings of the XIII International Conference on Cosmic Rays at Denver, Vol.4 (1973), p. 2671;Proceedings of the International Cosmic Ray Symposium on High-Energy Phenomena at Tokyo (1974), p. 1.

    Google Scholar 

  11. Japanese-Brazilian Emulsion Chamber Group:Can. Journ. Phys.,46, S660 (1968).

    Google Scholar 

  12. E. Fermi:Prog. Theor. Phys.,5, 370 (1950).

    Article  MathSciNet  Google Scholar 

  13. R. Hagedorn: CERN Yellow Report 71-12 (May 1971).

  14. E. L. Feinberg:Phys. Rep.,5 C, 240 (1972).

    ADS  Google Scholar 

  15. The Mt. Fuji emulsion chamber group has found four events withE 0∼1·1015eV and these events include the large-angle high-energy hadrons within the produced particles:Proceedings of the XIV International Conference on Cosmic Rays at München, HE1-16, 6-25 (1975).

  16. In the cosmic-ray air shower experiments, a number of double-core events are discussed in relation to the large-P T hadron production atE 0=(1014÷1016) eV.M. Oda andY. Tanaka:Proceedings of the International Conference on Cosmic Rays in Kyoto (Journ. Phys. Soc. Japan,47,Suppl. A-II),3, 282 (1962);Proceedings of the International Conference on Cosmic Rays at London, Vol.2, INS group, 672, OCU group, 664 (1965);Proceedings of the X International Conference on Cosmic Rays (Canad. Journ. Phys.,46 (1968)); OCU group: S17, S26; Sydney group: S30, S33; Kiel group: S37, S41, S51; INS group: S56; BASJE group: S60, S63; and alsoProceedings of the XI International Conference on Cosmic Rays (Acta Phys. Acad. Sci. Hungar.,29, Suppl. 3 (1970)); OCU group: 471; Saitama-INS group: 451; Kobe-Konan group: 671; andJ. Trümper:Rapporteur Talks at Budapest Conference (1969), p. 477;Saitama Group:Proceedings of the XIV International Conference on Cosmic Rays, Vol.12 (1975), p. 4364;Utah Group:Phys. Rev. Lett.,35, 1681 (1975). Direct observation in cloud chamber, seeH. Sakuyama:Lett. Nuovo Cimento,8, 193 (1973).

  17. CERN-Columbia-Rockfeller Group:Proceedings of the International Conference on Lepton and Photon Interactions at Stanford University (to be submitted).

  18. S. M. Berman, J. D. Bjorken andF. Sheck:Phys. Rev. D,4, 3388 (1971).

    Article  ADS  Google Scholar 

  19. R. Blankenbecler, S. J. Brodsky andJ. F. Gunion:Phys. Rev. D,6, 2652 (1972).

    Article  ADS  Google Scholar 

  20. Although a similar short-range correlation as is observed in the small-P T hadron production will be observed, the invariant masses between adjacent large-P T hadrons are greater than the masses of the ρ, ω, η mesons. Also read the paper by theAachen-CERN-Heidelberg-Munich Collaboration:Nucl. Phys.,86 B, 201 (1975).

    Google Scholar 

  21. Z. Koba:Phys. Lett.,16, 326 (1965).

    Article  ADS  Google Scholar 

  22. J. D. Bjorken andG. R. Farrer:Phys. Rev. D,9, 1449 (1974);V. Anisovich andV. Shekhter:Nucl. Phys.,55 B, 455 (1973).

    Article  ADS  Google Scholar 

  23. H. Noda andK. Kinoshita:Prog. Theor. Phys.,53, 185 (1975).

    Article  ADS  Google Scholar 

  24. Y. Igarashi, T. Matsuoka andS. Sawada:Prog. Theor. Phys.,52, 986 (1974).

    Article  ADS  Google Scholar 

  25. L. K. Chavda andD. S. Narayan:Phys. Lett.,51 B, 359 (1974).

    Article  ADS  Google Scholar 

  26. Meng Ta-Cheng:Phys. Rev. D,9, 3062 (1974);A. Bouguet, J. Letessier andA. Tounsi: preprint PAR-LPTHE 74/1 (Université de Paris);J.-J. Dumont andL. Heiko: preprint IIHE 74/1 (Université Libre de Bruxelles).

    Article  ADS  Google Scholar 

  27. E. L. Berger andD. Branson:Phys. Lett.,45 B, 57 (1971).

    ADS  Google Scholar 

  28. Ming Duong-Van andD. Carruthers:Phys. Rev. Lett.,21, 133 (1973).

    Article  ADS  Google Scholar 

  29. M. Taketani andM. Nagasaki:Prog. Theor. Phys.,53, 1212 (1975).

    Article  ADS  Google Scholar 

  30. For other theories see the review talks:S. D. Ellis andR. Thun: CERN preprint TH-1874 (March 1974);D. R. O. Morrison: CERN/D. PH. II/Phys. 73-46;M. Jacob: CERN Yellow Report 74-15;E. Lillethun: University of Bergen Report No. 53;F. Elevekjaer andJ. L. Petersen: CERN preprint TH-1971 (February 1975).

  31. J. B. M. Pattison:Proceedings of the International Conference on Cosmic Rays at Budapest, Vol.4 (1969), p. 22

    Google Scholar 

  32. A recent Michigan-FNAL experiment shows 〈n ch〉 =5.25 forE v >50 GeV;Phys. Rev. Lett.,36, 124, 127 (1976).

  33. CALTEC-FNALGroup: preprint CALT 68-495 (1975);Harvard-Pennsylvania-Wisconsin Group:Phys. Rev. Lett.,34, 419 (1975);35, 1199 (1975).

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Authors and Affiliations

  1. Cosmic Ray Laboratory, University of Tokyo, 188, Tanashi, Tokyo, Japan

    Y. Muraki

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  1. Y. Muraki
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Additional information

To speed up publication, the author of this paper has agreed to not receive the proofs for correction.

A part of this paper has been already published.Y. Muraki:Lett. Nuovo Cimento,12, 228 (1975);Y. Muraki:Uchusen Kenkyu,18, 384 (June 1974).

Numerical computation has been performed by the computer of Institute for Nuclear Study, Tokyo University and the computation centre of the Nagoya University.

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Muraki, Y. Hadron-hadron interactions with large transverse momenta. Nuov Cim A 33, 579–591 (1976). https://doi.org/10.1007/BF02729873

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  • DOI: https://doi.org/10.1007/BF02729873

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