- Access by Xinjiang University
Can four-quark states be easily detected in baryon-antibaryon scattering?
Phys. Rev. D 41, 2258 – Published 1 April, 1990
DOI: https://doi.org/10.1103/PhysRevD.41.2258
Abstract
We attempt to explain the experimental sparsity of diquonia candidates given the theoretical abundance of such states. We do this by investigating the lowest-order contributions of such states as intermediates in scattering into exclusive baryon-antibaryon final states. We find that the contributions depend on the partial widths for the meson-meson decays of the diquonia, and that resonant effects can be easily made to disappear. We conclude that if the meson-meson widths of diquonia are larger than about 50 MeV, most of these states will be extremely difficult to observe in scattering, for instance. We note that diquonia may offer a convenient means of describing some aspects of the dynamics of baryon-antibaryon scattering.
References (18)
- W. Roberts, B. Silvestre-Brac, and C. Gignoux, Phys. Rev. D 41, 182 (1990)
- R. L. Jaffe, Phys. Rev. D 17, 1444 (1978)
- M. Fukugita and T. H. Hansson, Phys. Lett. 84B, 493 (1979)
- J. P. Ader, B. Bonnier, and S. Sood, Nuovo Cimento 68, 1 (1982) Z. Phys. C 5, 85 (1980) Phys. Lett. 84B, 488 (1979)
- I. M. Barbour and J. P. Gilchrist, Z. Phys. C 7, 225 (1981) ibid.8, 282(E) (1981)
- C. Rosenzweig, Phys. Rev. Lett. 36, 697 (1976)
- M. B. Gavela, A. LeYaouanc, L. Oliver, O. Pène, J. C. Raynal, and S. Sood, Phys. Lett. 79B, 459 (1978)
- Chan Hong-Mo and H. Hogaasen, Phys. Lett. 72B, 121 (1977) ibid.72B, 400 (1977) Chan Hong-Mo, in Proceedings of IV European Antiproton Symposium, 1978, edited by A. Fridman (Editions du CNRS, Strasbourg, 1978)
- S. Ono and S. Furui, Z. Phys. C 36, 651 (1987)
- K. Igi and S. Yazaki, Phys. Lett. 74B, 257 (1978) Prog. Theor. Phys. 61, 487 (1979)
- M. Imachi, S. Otsuki, and F. Toyoda, Prog. Theor. Phys. 52, 346 (1974) ibid.54, 280 (1975) ibid.55, 551 (1976) ibid.57, 517 (1977) M. Imachi and S. Otsuki, ibid. 58, 1657 (1977) ibid.58, 1660 (1977) ibid.59, 1290 (1978) M. Imachi, S. Ito, and S. Otsuki, ibid. 61, 202 (1979)
- S. Ono, in Proceedings of IV European Antiproton Symposium ([8])
- L. Montanet, G. C. Rossi, and G. Veneziano, Phys. Rep. 3C, 149 (1980)
- A. LeYaouanc, L. Oliver, O. Pène, and J. C. Raynal, Hadron Transitions In The Quark Model (Gordon and Breach, New York, 1988) M. Chaichian and R. Kogerler, Ann. Phys. (N.Y.) 124, 61 (1980) B. Silvestre-Brac, C. Gignoux, and W. Roberts, Institut des Sciences Nucléaires, Grenoble Report No. ISN 89.21 (unpublished)
- V. Flaminio, W. G. Moorehead, D. R. O. Morrison, and N. Rivoire, Report No. CERN-HERA, 1984 (unpublished)
- J. L. Rosner, Phys. Rev. Lett. 21, 950 (1968) Phys. Rep 11C, 89 (1974) H. Harari, Phys. Rev. Lett. 22, 562 (1969)
- R. L. Jaffe and F. E. Low, Phys. Rev. D 19, 2105 (1979)
- F. Tabakin and R. A. Eisenstein, Phys. Rev. C 31, 1857 (1985) M. Dillig and R. v. Fankenberg, in Antinucleon- and Nucleon-Nucleus Interactions, proceedings of the Conference, Telluride, Colorado, 1985, edited by G. E. Walker, C. D. Goodman, and C. Olmer (Plenum, New York, 1985) S. Furui and A. Faessler, Nucl. Phys. A468, 669 (1987) P. Kroll and W. Weise, ibid. A474, 608 (1987) M. Kohno and W. Schweiger, Phys. Lett. B 179, 15 (1986) P. Kroll and W. Schweiger, in Physics at LEAR with Low Energy Antiprotons, proceedings of the Workshop, Villars-sur-Ollon, Switzerland, 1987, edited by C. Amsler (Nuclear Science Research Conference Series 14) (Harwood Academic, New York, 1988) J. Niskanen, in Proceedings of the Third Lake Louise Winter Institute, Lake Louise, Canada, 1988, edited by B. A. Campbell (unpublished) C. B. Dover and J. M. Richard, Phys. Rev. D 17, 1770 (1978)