- Physical Review Journals
All JournalsPhysics Magazine
Access Provided by Xinjiang University

Physical Review D

Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Chiral symmetry breaking and stability of strangelets

S. Yasui, A. Hosaka, and H. Toki

  • Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka, 567-0047, Japan

PDF

Phys. Rev. D 71, 074009 – Published 14 April, 2005

DOI: https://doi.org/10.1103/PhysRevD.71.074009

Abstract

We discuss the stability of strangelets by considering dynamical chiral symmetry breaking and confinement. We use a U(3)L×U(3)R symmetric Nambu-Jona-Lasinio (NJL) model for chiral symmetry breaking supplemented by a boundary condition for confinement. It is shown that strangelets (finite number of strange quarks) with baryon number A≲103 is the lowest quark droplets. For the observables, we obtain the masses and the charge-to-baryon number ratios of the strangelets. These quantities are compared with the observed data of the exotic particles.

View figure in article

Article Text

References (25)

  1. A. R. Bodmer, Phys. Rev. D 4, 1601 (1971).
  2. E. Witten, Phys. Rev. D 30, 272 (1984).
  3. E. Farhi and R.  L. Jaffe, Phys. Rev. D 30, 2379 (1984).
  4. S. Banerjee, S. K. Ghosh, S. Raha, and D. Syam, Phys. Rev. Lett. 85, 1384 (2000).
  5. J. Madsen, Phys. Rev. D 47, 5156 (1993); 50, 3328 (1994); Phys. Rev. Lett. 70, 391 (1993); 85, 4687 (2000).
  6. Y. Nambu and G. Jona-Lasinio, Phys. Rev. D 122, 345 (1961); 124, 246 (1961); U. Vogl and W. Weise, Prog. Part. Nucl. Phys. 27, 195 (1991); S. P. Klevansky, Rev. Mod. Phys. 64, 649 (1992); T. Hatsuda and T. Kunihiro, Phys. Rep. 247, 221 (1994).
  7. M. Buballa, Nucl. Phys. A611, 393 (1996).
  8. M. Buballa and M. Oertel, Nucl. Phys. A642, c39 (1998).
  9. M. Buballa and M. Oertel, Phys. Lett. B 457, 261 (1999).
  10. D. K. Kim, Y. D. Han, and I. G. Koh, Phys. Rev. D 49, 6943 (1994).
  11. O. Kiriyama and A. Hosaka, Phys. Rev. D 67, 085010 (2003).
  12. P. N. Bogolioubov, Ann. Inst. Henri Poincaré 8, 163 (1967).
  13. A. W. Thomas, Adv. Nucl. Phys. 13, 1 (1984).
  14. A. Hosaka and H. Toki, Quarks, Baryons and Chiral Symmetry (World Scientific, Singapore, 2001).
  15. A. Hosaka and H. Toki, Phys. Rep. 277, 65 (1996).
  16. R. Balian and C. Bloch, Ann. Phys. (N.Y.) 60, 401 (1970); 64, 271 (1971); T. H. Hansson and R. L. Jaffe, 151, 204 (1983).
  17. T. DeGrand, R. L. Jaffe, K. Johnson, and J. Kiskis, Phys. Rev. D 12, 2060 (1975).
  18. M. Kasuya, T. Saito, and M. Yasue, Phys. Rev. D 47, 2153 (1993).
  19. M. Ichimura et al., Nuovo. Cimento Soc. Ital. Fis. 106A, 843 (1993).
  20. P. B. Price, E. K. Shirk, W. Z. Osborne, and L. S. Pinsky, Phys. Rev. D 18, 1382 (1978).
  21. O. Miyamura, in Proceedings of the 24th International Cosmic Ray Conference, Rome, edited by Compositori Bologna, 1995), Vol. 1, p. 890.
  22. J. N. Capdeville, Nuovo Cimento Soc. Ital. Fis. C 19C, 623 (1996).
  23. J. Madsen, Phys. Rev. Lett. 87, 172003 (2001).
  24. P. Amore, M. C. Birse, J. A. McGovern, and N. R. Walet, Phys. Rev. D 65, 074005 (2002).
  25. O. Kiriyama, hep-ph/0401075.

Outline

Information

Phys. Rev. D 71, 074009– Published 14 April, 2005
  • Received 1 November 2004

© 2005 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation