Abstract
An effective meson Lagrangian including a scalar glueball is constructed on the basis of U(3)×U(3) chiral symmetry. The glueball is introduced in the meson Lagrangian by using the principle of scale invariance of an effective Lagrangian and the dilaton model. The singlet-octet mixing of scalar-meson states is described by means of the ’t Hooft interaction. The contribution of scalar and pseudoscalar anomalies to the breakdown of scale invariance is taken into account. The mixing of quarkonia with the glueball is described. The mass spectrum of scalar mesons, together with the glueball, and also their strong decay widths are calculated. From a comparison of the results with experimental data, it follows that f 0(1500) is rather a glueball, whereas f 0(1710) is a quarkonium. This is in accord with the results obtained in our previous study, where radially excited scalar-meson states were described. It is shown that the ρ meson plays an important role in the description of glueball decays.
Similar content being viewed by others
References
J. Sexton, A. Vaccarino, and D. Weingarten, Phys. Rev. Lett. 75, 4563 (1995).
W. Lee and D. Weingarten, Phys. Rev. D 59, 094508 (1999).
A. Vaccarino and D. Weingarten, hep-lat/9910007.
C. Amsler et al., Phys. Lett. B 353, 425 (1995); C. Amsler and F. Close, Phys. Lett. B 353, 385 (1995).
S. Narison, Nucl. Phys. B 509, 312 (1998).
V. V. Anisovich, D. V. Bugg, and A. V. Sarantsev, Phys. Rev. D 58, 111503 (1998).
A. Palano, Nucl. Phys. B (Proc. Suppl.) 39, 287 (1995).
N. A. Törnqvist and M. Roos, Phys. Rev. Lett. 76, 1575 (1996).
Eef van Beveren and G. Rupp, hep-ph/9806246.
L. S. Celenza, B. Huang, H. Wang, and C. M. Shakin, Preprint No. BCCNT:99/111/283, Brooklin Coll. (New York, 1999).
L. S. Celenza, Shun-fu Gao, Bo Huangsheng Wang, and C. M. Shakin, Phys. Rev. C 61, 035201 (2000).
M. K. Volkov and V. L. Yudichev, Int. J. Mod. Phys. A 14, 4621 (1999); Fiz. Élem. Chastits At. Yadra 31, 576 (2000) [Phys. Part. Nucl. 31, 282 (2000)]; Yad. Fiz. 63, 1924 (2000) [Phys. At. Nucl. 63, 1835 (2000)].
M. K. Volkov, Ann. Phys. (N.Y.) 157, 282 (1984); Fiz. Élem. Chastits At. Yadra 17, 433 (1986) [Sov. J. Part. Nucl. 17, 186 (1986)]; D. Ebert and H. Reinhardt, Nucl. Phys. B 271, 188 (1986); M. K. Volkov, Fiz. Élem. Chastits At. Yadra 24, 81 (1993) [Phys. Part. Nucl. 24, 35 (1993)].
M. K. Volkov and D. Ebert, Yad. Fiz. 36, 1265 (1982) [Sov. J. Nucl. Phys. 36, 736 (1982)]; Z. Phys. C 16, 205 (1983).
M. K. Volkov and C. Weiss, Phys. Rev. D 56, 221 (1997).
M. K. Volkov, Yad. Fiz. 60, 2094 (1997) [Phys. At. Nucl. 60, 1920 (1997)].
G. Ripka and M. Jaminon, Ann. Phys. (N.Y.) 218, 51 (1992); M. Jaminon and G. Rapha, Nucl. Phys. A 564, 551 (1993).
J. Cugnon, M. Jaminon, and B. van den Bosche, Nucl. Phys. A 598, 515 (1996); M. Jaminon and B. van den Bosche, Nucl. Phys. A 619, 285 (1997).
K. Kusaka, M. K. Volkov, and W. Weise, Phys. Lett. B 302, 145 (1993).
A. A. Andrianov, V. A. Andrianov, V. Yu. Novozhilov, and Yu. V. Novozhilov, Pis’ma Zh. Éksp. Teor. Fiz. 43, 557 (1986) [JETP Lett. 43, 719 (1986)]; A. A. Andrianov, V. A. Andrianov, D. Ebert, and T. Feldmann, Int. J. Mod. Phys. A 12, 5589 (1997); A. A. Andrianov and V. A. Andrianov, Z. Phys. C 55, 435 (1992); A. A. Andrianov, V. A. Andrianov, Yu. V. Novozhilov, and V. Yu. Novozhilov, Phys. Lett. B 186, 401 (1987).
J. Ellis and J. Lánik, Phys. Lett. B 150B, 289 (1985); Phys. Lett. B 175, 83 (1986); J. Lánik, Acta Phys. Slov. 35, 343 (1985); B. A. Campbell, J. Ellis, and K. A. Olive, Nucl. Phys. B 345, 57 (1990).
C. Rosenzweig, J. Schechter, and G. Trahern, Phys. Rev. D 21, 3388 (1980).
M. K. Volkov, Fiz. Élem. Chastits At. Yadra 13, 1070 (1982) [Sov. J. Part. Nucl. 13, 446 (1982)].
M. K. Volkov, M. Nagy, and V. L. Yudichev, Nuovo Cimento A 112, 225 (1999).
A. E. Dorokhov and N. I. Kochelev, Z. Phys. C 37, 377 (1988); Yad. Fiz. 52, 214 (1990) [Sov. J. Nucl. Phys. 52, 135 (1990)]; Fiz. Élem. Chastits At. Yadra 23, 1192 (1992) [Sov. J. Part. Nucl. 23, 522 (1992)].
H. Vogl and W. Weise, Prog. Part. Nucl. Phys. 27, 195 (1991).
S. P. Klevansky, Rev. Mod. Phys. 64, 649 (1992).
D. J. Broadhurst et al., Phys. Lett. B 329, 103 (1994); B. V. Geshkenbein, Yad. Fiz. 58, 1873 (1995) [Phys. At. Nucl. 58, 1771 (1995)]; S. Narison, Phys. Lett. B 387, 162 (1996).
E. Byckling and K. Kajantie, Particle Kinematics (Wiley, London, 1973).
Particle Data Group (C. Caso et al.), Eur. Phys. J. C 3, 1 (1998).
R. Kumar, Phys. Rev. 185, 1865 (1969).
D. Ebert, M. Nagy, M. K. Volkov, and V. L. Yudichev, Eur. Phys. J. A 8, 567 (2000).
M. A. Shifman, Phys. Rep. 209, 341 (1991).
Author information
Authors and Affiliations
Additional information
From Yadernaya Fizika, Vol. 64, No. 11, 2001, pp. 2091–2104.
Original English Text Copyright © 2001 by Volkov, Yudichev.
This article was submitted by the authors in English.
Rights and permissions
About this article
Cite this article
Volkov, M.K., Yudichev, V.L. Strong decays of a scalar glueball in a scale-invariant chiral quark model. Phys. Atom. Nuclei 64, 2006–2019 (2001). https://doi.org/10.1134/1.1423750
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1134/1.1423750