What’s New in the Old Spectroscopy?

  • Nathan Isgur

Abstract

In the first two of these three lectures, I describe some recent work attempting to place the quark potential model on a firmer foundation: we will discuss taking first the “naive” and then the “non-relativistic” out of the quark model. In the last lecture I will give my views on the outstanding theoretical and experimental issues in “the old spectroscopy”.

Keywords

Assure Hydrid Clarification Weinstein 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    S. Capstick, S. Godfrey, N. Isgur and J. Paton, ‘Taking the “Naive” and “Non-relativistic” Out of the Quark Potential Model’, Phys. Lett. B175, 457 (1986).Google Scholar
  2. 2.
    N. Isgur and J. Paton, ‘A Flux-tube Model for Hadrons in QCD’, Phys. Rev. D31, 2910 (1985).ADSGoogle Scholar
  3. N. Isgur and J. Paton, ‘A Flux-tube Model for Hadrons in QCD’, Phys. Lett. 124B, 247 (1983).Google Scholar
  4. 3.
    N. Isgur, R. Kokoski and J. Paton, ‘Gluonic Excitations of Mesons: Why They Are Missing and How to Find Them’, Phys. Rev. Lett. 54, 869 (1985).ADSCrossRefGoogle Scholar
  5. 4.
    F.E. Barnes, California Institute of Technology, Ph.D., thesis, 1977 (unpublished).Google Scholar
  6. F.E. Barnes, Z. Phys. C10, 275 (1981).ADSGoogle Scholar
  7. D. Horn and J. Mandula, Phys. Rev. D17, 898 (1978).ADSGoogle Scholar
  8. P. Hasenfratz, R.R. Horgan, J. Kuti and J.M. Richard, Phys. Lett. 95B, 299 (1980).ADSGoogle Scholar
  9. F.E. Barnes, F.E. Close and S. Monaghan, Nucl. Phys. B198, 380 (1982).ADSCrossRefGoogle Scholar
  10. M. Chanowitz and S. Sharpe, Nucl. Phys. B222, 211 (1983).ADSCrossRefGoogle Scholar
  11. E. Golowich, E. Haqq and G. Karl, Phys. Rev. D28, 160 (1983).ADSGoogle Scholar
  12. 5.
    J. Merlin and J. Paton, J. Phys. G11, 439 (1985).Google Scholar
  13. 6.
    R. Kokoski and N. Isgur, Phys. Rev. D35, 907 (1987).ADSGoogle Scholar
  14. 7.
    G. Karl, private communication.Google Scholar
  15. 8.
    S. Godfrey and N. Isgur, “Mesons in a Relativized Quark Model with Chromodynamics”, Phys. Rev. D32, 189 (1985).ADSGoogle Scholar
  16. 9.
    S. Capstick and N. Isgur, “Baryons in a Relativized Quark Model with Chromodynamics”, Phys. Rev. D34, 2809 (1986).ADSGoogle Scholar
  17. 10.
    N. Isgur and G. Karl, Phys. Lett. 72B, 109 (1977).ADSGoogle Scholar
  18. N. Isgur and G. Karl, Phys. Lett. 74B, 353 (1978).ADSGoogle Scholar
  19. N. Isgur and G. Karl, Phys. Lett. Phys. Rev. D18, 4187 (1978).ADSGoogle Scholar
  20. N. Isgur and G. Karl, Phys. Lett. D19, 2653 (1979).ADSGoogle Scholar
  21. N. Isgur and G. Karl, Phys. Lett. D21, 3175 (1980).ADSGoogle Scholar
  22. 11.
    See, for example, C. Michael in “Lattice Gauge Theory: A Challenge in Large-Scale Computing” ( New York, Plenum, 1986 ), p. 227.Google Scholar
  23. A. Huntley and C. Michael, Nucl. Phys. B286, 211 (1987).MathSciNetADSCrossRefGoogle Scholar
  24. 12.
    J. Flower, Caltech preprints CALT-68-1377, 1378.Google Scholar
  25. 13.
    M. Luscher, K. Symanzik, and P. Weisz, Nucl. Phys. B173, 365 (1980).MathSciNetADSCrossRefGoogle Scholar
  26. M. Lüscher, G. Mtinster, and P. Weisz, Nucl. Phys. B180, 1 (1981).ADSCrossRefGoogle Scholar
  27. M. Lüscher, Nucl. Phys. B180. 317 (1981).ADSCrossRefGoogle Scholar
  28. J. Amjorn, P. Olesen, and C. Peterson, Phys. Lett. B142, 410 (1984).ADSGoogle Scholar
  29. M. Luscher, K. Symanzik, and P. Weisz, Nucl. Phys. B244, 262 (1984).Google Scholar
  30. P. Olesen, Phys. Lett. B160, 144 (1985).ADSGoogle Scholar
  31. 14.
    H. Markum et al., Phys. Rev. D31, 2029 (1985).ADSGoogle Scholar
  32. S. Ohta, M. Fukugita, and A. Ukawa, Phys. Lett. B173, 15 (1986).ADSGoogle Scholar
  33. 15.
    J. Weinstein and N. Isgur, Phys. Rev. Lett. 48, 659 (1982).ADSCrossRefGoogle Scholar
  34. J. Weinstein and N. Isgur, Phys. Rev. D27, 588 (1983).ADSGoogle Scholar
  35. J. Weinstein, University of Toronto Ph. D. Thesis, 1986 (unpublished).Google Scholar
  36. For a review of the status of this picture see F. E. Barnes in these proceedings. The K\(\bar K\) molecule picture is an outgrowth of earlier work on qq\(\bar q\bar q\) states in the bag model: see R. L. Jaffe, Phys. R.v. D15, 267, 281 (1977), D15, 1444 (1978).Google Scholar
  37. R. L. Jaffe and K. Johnson, Phys. Lett. D15, 201 (1976).ADSGoogle Scholar
  38. 16.
    R. Koniuk and N. Isgur, Phys. Rev. Lett. 44, 485 (1980).CrossRefGoogle Scholar
  39. R. Koniuk and N. Isgur, Phys. Rev. D21, 1868 (1980).ADSGoogle Scholar
  40. 17.
    See the contributions by F. E. Close, G. Eigen, and F. Couchot in these proceedings.Google Scholar
  41. 18.
    For a review of the experimental situation see L. Montanet in these proceedings.Google Scholar
  42. 19.
    D. Aston et al., Nucl. Phys. B247, 261 (1984).ADSCrossRefGoogle Scholar
  43. D. Aston et al., Nucl. Phys. B292, 693 (1987).ADSCrossRefGoogle Scholar
  44. 20.
    A. Donnachie and H. Mirzaie, Z. Phys. C33, 407 (1987).ADSGoogle Scholar
  45. A. Donnachie and A. B. Clegg, Z. Phys. C34, 257 (1987).ADSGoogle Scholar
  46. N. M. Cason et al., Phys. Rev. Lett. 48, 1316 (1982) find evidence for the isoscalar member. See also Ref. 19 in which evidence is seen for the strange members of this nonet at 1.97 GeV.Google Scholar
  47. 22.
    M. Böhm, H. Joos, and M. Krammer, Nucl. Phys. B69, 349 (1974).ADSCrossRefGoogle Scholar
  48. W. B. Kaufmann and R. J. Jacob, Phys. Rev. D10, 1051 (1974).ADSGoogle Scholar
  49. A. LeYaouanc et al., Phys. Lett. 71B, 397 (1977).ADSGoogle Scholar
  50. A. LeYaouanc et al., Phys. Lett. 76B, 484 (1978).ADSGoogle Scholar
  51. A. Bradley, J. Phys. G4, 1517 (1978).ADSGoogle Scholar
  52. A. Bradley and D. Robson, Z. Phys. C6, 57 (1980).ADSGoogle Scholar
  53. M. Chaichan and R. Kogerler, Ann. Phys. (N.Y.) 124, 61 (1980).ADSCrossRefGoogle Scholar
  54. E. Eichten et al., Phys. Rev. D21, 203 (1980).ADSGoogle Scholar
  55. S. B. Gerasimov and A. B. Govorfcov, Z. Phys. C13, 43 (1982).ADSGoogle Scholar
  56. R. Kokoski and N. Isgur, Phys. Rev. D35, 907 (1987) discuss all of the 2P multiplets in this light.Google Scholar
  57. 23.
    See, for example, M. G. Bowler, Phys. Lett. B182, 400 (1986).ADSGoogle Scholar
  58. 24.
    Ph. Gavillet et al., Z. Phys. C16, 119 (1982). Since giving these lectures I have learned that the LASS group also sees such a state: D. Aston et al, SLAC preprint SLAC-PUB-4340.ADSGoogle Scholar
  59. 25.
    K. L. Au, D. Morgan, and M. R. Pennington, Phys. Lett. 167B. 229 (1986) and Rutherford Appleton Laboratory preprint RAL-86-076, 1986.ADSGoogle Scholar

Copyright information

© Plenum Press, New York 1989

Authors and Affiliations

  • Nathan Isgur
    • 1
    • 2
  1. 1.Department of Theoretical PhysicsOxfordUK
  2. 2.Department of PhysicsUniversity of TorontoTorontoCanada

Personalised recommendations