Abstract
The masses of the ground-state and excited heavy tetraquarks with hidden charm and bottom are calculated within the relativistic diquark-antidiquark picture. The dynamics of the light quark in a heavy-light diquark is treated completely relativistically. The diquark structure is taken into account by calculating the diquark-gluon form factor. New experimental data on charmonium-like states above the open charm threshold are discussed. The obtained results indicate that X(3872), Y(4260), Y(4360), Z(4433), and Y(4660) can be tetraquark states with hidden charm.
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References
G. V. Pakhlova, Yad. Fiz. 72, No. 3 (2009); S. Godfrey and S. L. Olsen, arXiv:0801.3867 [hep-ph].
R. L. Jaffe, Phys. Rev. D 15, 267 (1977); Phys. Rev. Lett. 38, 195 (1977); V. A. Matveev and P. Sorba, Lett. Nuovo Cimento 20, 443 (1977).
A. M. Badalyan, B. L. Ioffe, and A. V. Smilga, Nucl. Phys. B 281, 85 (1987); A. B. Kaidalov, Surv. High Energy Phys. 13, 265 (1999).
D. Ebert, R. N. Faustov, and V. O. Galkin, Phys. Lett. B 634, 214 (2006); D. Ebert, R. N. Faustov, V. O. Galkin, and W. Lucha, Phys. Rev. D 76, 114015 (2007).
D. Ebert, R. N. Faustov, and V. O. Galkin, Phys. Rev. D 72, 034026 (2005); Phys. Lett. B 659, 612 (2008).
L. Maiani, F. Piccinini, A. D. Polosa, and V. Riquer, Phys. Rev. D 71, 014028 (2005).
L. Maiani, F. Piccinini, A. D. Polosa, and V. Riquer, Phys. Rev. D 72, 031502(R) (2005).
L. Maiani, A. D. Polosa, and V. Riquer, arXiv:0708.3997 [hep-ph].
L. Maiani, A. D. Polosa, and V. Riquer, Phys. Rev. Lett. 99, 182003 (2007).
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