Four-Quark Nature of Light Scalar Mesons
https://doi.org/10.25205/2541-9447-2022-17-1-161-165
Abstract
The contribution of Novosibirsk physicists to the discovery of the four-quark nature of light scalar mesons f0(980) and a0(980) is described.
About the Author
N. N. AchasovRussian Federation
Nikolay N. Achasov, Doctor of Sciences (Physics and Mathematics), Professor
WoS Researcher ID AAG-5621-2019
Scopus Author ID 7006572313
Novosibirsk
References
1. Jaffe R. L. Multiquark hadrons. I. Phenomenology of Q2Q–2 mesons. Phys. Rev. D, 1977, no. 15, p. 267. DOI 10.1103/PhysRevD.15.267
2. Achasov N. N., Devyanin S. A., Shestakov G. N. S* – δ0 mixing as a threshold phenomenon. Phys. Lett., 1979, vol. 88B, pp. 367–371.
3. Achasov N. N., Devyanin S. A., Shestakov G. N. Nature of scalar resonances. Sov. J. Nucl. Phys., 1980, vol. 32, pp. 566–573.
4. Achasov N. N., Devyanin S. A., Shestakov G. N. Phys. Lett., 1982, vol. 108B, pp. 134–139.
5. Achasov N. N., Devyanin S. A., Shestakov G. N. Z. Phys. C, 1982, vol. 16, pp. 55–64.
6. Achasov N. N., Shestakov G. N. Summary of the search for four-quark states in γγ collisions. Sov. Phys. Usp., 1991, vol. 34 (6), pp. 471–496.
7. Achasov N. N., Ivanchenko V. N. On a search for four-quark states in radiative decays of mesons. Nucl. Phys., 1989, vol. B315, pp. 465–476.
8. Achasov M. N. et al. (SND Collab.) Evidence of the ϕ → ηπ0γ decay. Phys. Lett. B, 1998, vol. 438, pp. 441–445.
9. Achasov M. N. et al. (SND Collab.) First observation of ϕ(1020) → π0π0γ decay. Phys. Lett. B, 1998, vol. 440, pp. 442–448.
10. Achasov M. N. et al. (SND Collab.) The ϕ → ηπ0γ decay. Phys. Lett. B, 2000, vol. 479, pp. 53–58.
11. Achasov M. N. et al. (SND Collab.) The ϕ(1020) → π0π0γ decay. Phys. Lett. B, 2000, vol. 485, pp. 349–356.
12. Akhmetshin R. R. et al. (CMD-2 Collab.) Study of the ϕ decays into π0π0γ and ηπ0γ final states. Phys. Lett. B, 1999, vol. 462, pp. 380–388.
13. Aloisio A. et al. (KLOE Collab.) Study of the decay ϕ → π0π0γ with the KLOE detector. Phys. Lett. B, 2002, vol. 537, pp. 21–27.
14. Ambrosino F. et al. (KLOE Collab.) Study of the a0(980) meson via the radiative decay ϕ →ηπ0γ with the KLOE detector. Phys. Lett. B, 2009, vol. 681, pp. 5–13.
15. Achasov N. N. Radiative decays of ϕ-meson about nature of light scalar resonances. Nucl. Phys. A, 2003, vol. 728, pp. 425–438.
16. 't Hooft G. A planar diagram theory for strong interactions. Nucl. Phys. 1974, vol. B72, pp. 461–473.
17. Achasov N. N., Kiselev A. V. Once more about the KK molecule approach to the light scalars. Phys. Rev. D, 2007, vol. 76, p. 077501.
18. Achasov N. N., Kiselev A. V. Reply to “Comment on ‘Once more about the molecule approach to the light scalars’”. Phys. Rev. D, 2008, vol. 78, p. 058502.
19. Achasov N. N., Gubin V. V., Shevchenko V. I. Production of KK scalar molecules in radiative decays. Phys. Rev. D, 1997, vol. 56, pp. 203–211.
20. Achasov N. N., Shestakov G. N. New explanation of the GAMS results on the f0(980) production in the reaction π–p → π0π0n. Phys. Rev. D, 1998, vol. 58, p. 054011.
21. Achasov N. N., Kiselev A. V. Analytical ππ scattering amplitude and the light scalars-II. Phys. Rev. D, 2012, vol. 85, p. 094016.
22. Achasov N. N., Kiselev A. V. a0(980) physics in semileptonic D0 and D+ decays. Phys. Rev. D, 2018, vol. 98, p. 096009.
23. Achasov N. N., Shestakov G. N. Strong isospin symmetry breaking in light scalar meson production. Phys. Usp., 2019, vol. 62, pp. 3–31.
24. Achasov N. N., Shestakov G. N. Light scalar mesons in photon-photon collisions. Phys. Usp., 2011, vol. 54, pp. 799–828.
25. Achasov N. N., On the nature of the a0(980) and f0(980) scalar mesons. Phys. Usp., 1998, vol. 41, pp. 1149–1153.
26. Achasov N. N., Devyanin S. A., Shestakov G. N. The problem of scalar mesons. Sov. Phys. Usp., 1984, vol. 27, pp. 161–180.
Review
For citations:
Achasov N.N. Four-Quark Nature of Light Scalar Mesons. SIBERIAN JOURNAL OF PHYSICS. 2022;17(1):161-165. (In Russ.) https://doi.org/10.25205/2541-9447-2022-17-1-161-165