- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review D

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Gluino contributions to high-transverse-momentum hadron production at very high energies

X. N. Maintas

S. D. P. Vlassopulos

  • Department of Physics, University of Athens, GR-15771 Kouponia, Athens, Greece

  • Department of Physics, McGill University, Montreal, Quebec, Canada and Department of Physics, National Technical University, GR-15773 Zographou, Athens, Greece

PDF

Phys. Rev. D 32, 604 – Published 1 August, 1985

DOI: https://doi.org/10.1103/PhysRevD.32.604

Abstract

We calculate the contributions to high-transverse-momentum pion production, in the present CERN p¯p collider energy range and beyond, of all subprocesses involving at the partonic level lowest-order gluino interactions, in the framework of supersymmetric quantum chromodynamics (SQCD). We employ Q2-dependent models for the gluino distribution and fragmentation functions, which are constructed in the SQCD Altarelli-Parisi framework. These are found to be very strongly peaked for small momentum fractions, where they can become comparable to the corresponding gluon functions, decreasing very rapidly as the momentum fraction approaches unity. The gluino mass is treated as a parameter: we present results at the indicative values m=2, 10, and 30 GeV. It is found that although gluino subinteractions give unimportant contributions to the inclusive production of ordinary hadrons at present collider energies, they increase considerably in the TeV energy range and may be unraveled by future experiments.

View figure in article

References (23)

  1. A. P. Contogouris, R. Gaskell and S. Papadopoulos, Phys. Rev. D 17, 2314 (1978); J. Owens, E. Reya and M. Glück, ibid. 18, 1501 (1978); J. Owens and J. Kimel, ibid. 18, 3313 (1978); R. P. Feynman, R. Field and G. Fox, ibid. 18, 3320 (1978).
  2. N. G. Antoniou, E. N. Argyres, A. P. Contogouris, and S. D. P. Vlassopulos, Phys. Lett. 128B, 257 (1983); N. G. Antoniou, E. N. Argyres, A. P. Contogouris, M. Sanielevici, and S. D. P. Vlassopulos, in p bar p Physics and the W Discovery, proceedings of the XVIII Rencontre de Moriond, La Plagne, France, 1983, edited by J. Tran Thanh Van (Editions Frontie`res, Gif-sur-Yvette, 1983), p. 541; N. G. Antoniou, E. N. Argyres, A. P. Contogouris, and S. D. P. Vlassopulos, Phys. Rev. D 29, 1354 (1984).
  3. Yu. A. Gol'fand and E. P. Likhtman, Pis'ma Zh. Eksp. Teor. Fiz. 13, 452 (1971) [JETP Lett. 13, 323 (1971)]; D. Volkov and V. P. Akulov, Phys. Lett. 46B, 109 (1973); J. Wess and B. Zumino, Nucl. Phys. B70, 39 (1974); A. Salam and J. Strathdee, ibid. B76, 477 (1974); P. Fayet and S. Ferrara, Phys. Rep. 32C, 249 (1977).
  4. For recent reviews, with emphasis on the phenomenological aspects of SUSY, see J. Ellis, lectures presented at the Advanced Study Institute on Quarks, Leptons, and Beyond, Munich, 1983, CERN Report No. TH-3802, 1984 (unpublished); S. Dawson, E. Eichten and C. Quigg, Phys. Rev. D 31, 1581 (1985); H. E. Haber and G. L. Kane, Phys. Rep. (to be published).
  5. UA2 Collaboration, P. Bagnaia et al., Phys. Lett. 139B, 105 (1984); UA1 Collaboration, G. Arnison et al., ibid. 139B, 115 (1984).
  6. J. Ellis, in Proceedings of the Fourth Topical Workshop on Proton-Antiproton Collider Physics, Bern, 1984, edited by H. Hanni and J. Schacher (Report No. CERN-84-39, 1984); G. Altarelli, in Proceedings of the XIXth Rencontre de Moriond, La Plagne, France, 1984, edited by J. Tran Thanh Van (E´ditions Frontie`res, Gif-sur-Yvette, 1984).
  7. P. Fayet, Phys. Lett. 69B, 489 (1977); ibid. 70B, 461 (1977); in New Frontiers in High Energy Physics, proceeding of Orbis Scientiae, Coral Gables, 1978, edited by A. Perlmutter and L. F. Scott (Plenum, New York, 1978), p. 413; in Unification of the Fundamental Particle Interactions, proceedings of the Europhysics Study Conference, Erice, Italy, 1980, edited by S. Ferrara, J. Ellis, and P. van Nieuwenhuizen (Plenum, New York, 1980), p. 587.
  8. G. Brianti et al., Summary Report on ECFA-CERN Workshop on the Feasibility of Hadron Colliders in the LEP Tunnel, Lausanne and CERN, 1984 (unpublished).
  9. B. A. Campbell, J. Ellis and S. Rudaz, Nucl. Phys. B198, 1 (1982).
  10. I. Antoniadis, C. Kounnas and R. Lacaze, Nucl. Phys. B211, 216 (1983).
  11. C. Kounnas and D. A. Ross, Nucl. Phys. B214, 317 (1983).
  12. S. K. Jones and C. H. Llewellyn Smith, Nucl. Phys. B217, 145 (1983).
  13. I. Antoniadis, L. Baulieu and F. Delduc, Z. Phys. C 23, 119 (1984).
  14. P. R. Harrison and C. H. Llewellyn Smith, Nucl. Phys. B213, 223 (1983); ibid. B223, 542(E) (1983).
  15. B. L. Combridge, Nucl. Phys. B151, 429 (1979).
  16. V. B. Berestetskii, E. M. Lifshitz, and L. P. Pitaevskii, Quantum Electrodynamics, 2nd ed. (Pergamon, New York, 1980), p. 321.
  17. See, for example, A. J. Buras, Rev. Mod. Phys. 52, 199 (1980); E. Reya, Phys. Rep. 69, 195 (1981); G. Altarelli, ibid. 81, 1 (1982).
  18. A. J. Buras, Nucl. Phys. B125, 125 (1977).
  19. CDHS Collaboration, H. Abramowicz et al., Z. Phys. C 12, 289 (1982); , ibid. 13, 199 (1982).
  20. R. Baier, J. Engels and B. Petersson, Z. Phys. C 2, 265 (1979).
  21. M. Glück, E. Hoffmann and E. Reya, Z. Phys. C 13, 119 (1982).
  22. M. J. Herrero, L. E. Ibáñez, C. López and F. J. Ynduráin, Phys. Lett. 132B, 199 (1983); 145B, 430 (1984).
  23. UA2 Collaboration, P. Bagnaia Z. Phys. C 20, 117 (1983).

Outline

Information

Phys. Rev. D 32, 604– Published 1 August, 1985
  • Received 17 December 1984

© 1985 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation