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Decays of σ, κ, a0(980) and f0(980)

  • Experimental Physics
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Abstract

Ratios of coupling constants for these decays are compared with qq̄ predictions and Jaffe’s q2q̄2 model. In both models, the predicted ratio g2(κ→Kπ)/g2(σ→ππ) is much too small. Also, for qq̄, the predicted ratio g2(κ→Kη’)/g2(κ→Kπ) is much larger than observed. Both models fail for g2(f0→KK)/g2(a0→KK). This ratio requires that f0 has a dominant KK component. It arises naturally because the f0 pole lies very close to the KK threshold, giving its wave function a long KK tail.

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References

  1. V.E. Markushin, M. P Locher, Frascati Physics Series 15, 229 (1999)

    Google Scholar 

  2. E.M. Aitala et al., Phys. Rev. Lett. 86, 765 (2001)

    Article  Google Scholar 

  3. M. Ablikim et al., Phys. Lett. B 598, 149 (2004)

    Article  ADS  Google Scholar 

  4. R.J. Jaffe, Phys. Rev. D 15, 267 (1977)

    Article  ADS  Google Scholar 

  5. D.V. Bugg, Phys. Lett. B 632, 471 (2006)

    Article  ADS  Google Scholar 

  6. F. Okiharu et al., hep-ph/0507187

  7. D. Lohse, J.W. Durso, K. Holinde, J. Speth, Phys. Lett. B 234, 235 (1990)

    Article  ADS  Google Scholar 

  8. B.S. Zou, D.V. Bugg, Phys. Rev. D 50, 591 (1993)

    Article  ADS  Google Scholar 

  9. M.P. Locher, V.E. Markushin, H.Q. Zheng, Eur. Phys. J. C 4, 317 (1998)

    Article  ADS  Google Scholar 

  10. G. Janssen, B.C. Pearce, K. Holinde, J. Speth, Phys. Rev. D 52, 2690 (1995)

    Article  ADS  Google Scholar 

  11. L. Castillejo, R.H. Dalitz, F.J. Dyson, Phys. Rev. 101, 453 (1956)

    Article  MATH  ADS  Google Scholar 

  12. E. van Beveren et al., Z. Phys. C 30, 615 (1986)

    Article  Google Scholar 

  13. E. van Beveren, G. Rupp, N. Petropoulos, F. Kleefeld, AIP Conf. Proc. 660, 353 (2003)

    ADS  Google Scholar 

  14. E. van Beveren, G. Rupp, Phys. Rev. Lett. 91, 012003 (2003)

    Article  ADS  Google Scholar 

  15. N.A. Törnqvist, Z. Phys. C 68, 647 (1995)

    Article  Google Scholar 

  16. M. Ablikim et al., Phys. Lett. B 607, 243 (2005)

    Article  ADS  Google Scholar 

  17. V. Baru et al., Phys. Lett. B 586, 53 (2004)

    Article  Google Scholar 

  18. D.V. Bugg, V.V. Anisovich, A.V. Sarantsev, B.S. Zou, Phys. Rev. D 50, 4412 (1994)

    Article  ADS  Google Scholar 

  19. N.N. Achasov, G.N. Shestakov, Phys. Rev. D 49, 5779 (1994)

    Article  ADS  Google Scholar 

  20. J.A. Oller, Phys. Rev. D 71, 054030 (2005)

    Article  ADS  Google Scholar 

  21. D.V. Bugg, Phys. Lett. B 572, 1 (2003)

    Article  ADS  Google Scholar 

  22. A.V. Anisovich, V.V. Anisovich, A.V. Sarantsev, Z. Phys. A 359, 173 (1997)

    Article  Google Scholar 

  23. D. Aston et al., Nucl. Phys. B 296, 253 (1988)

    Article  Google Scholar 

  24. D.V. Bugg, accompanying paper [hep-ex/0603023]

  25. B. Hyams et al., Nucl. Phys. B 64, 134 (1973)

    Article  Google Scholar 

  26. C. Amsler et al., Phys. Lett. B 294, 451 (1992)

    Article  Google Scholar 

  27. J.A. Oller, Nucl. Phys. A 727, 353 (2003)

    Article  ADS  Google Scholar 

  28. D.M. Alde et al., Sov. J. Nucl. Phys. 54, 455 (1991); Phys. Lett. B 276, 375 (1992)

    Google Scholar 

  29. D. Barberis et al., Phys. Lett. B 471, 429 (2000)

    Article  Google Scholar 

  30. D.V. Bugg, Phys. Rep. 397, 257 (2004)

    Article  ADS  Google Scholar 

Download references

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Authors and Affiliations

  1. Queen Mary, University of London, London, E1 4NS, UK

    D.V. Bugg

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  1. D.V. Bugg
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Correspondence to D.V. Bugg.

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PACS

13.25.Gv, 14.40.Gx, 13.40.Hq

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Bugg, D. Decays of σ, κ, a0(980) and f0(980). Eur. Phys. J. C 47, 57–64 (2006). https://doi.org/10.1140/epjc/s2006-02561-3

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  • DOI: https://doi.org/10.1140/epjc/s2006-02561-3

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