Charmed baryon strong coupling constants in a light-front quark model

Salam Tawfiq; Patrick J. O’Donnell; J. G. Körner

doi:10.1103/PhysRevD.58.054010

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Charmed baryon strong coupling constants in a light-front quark model

Salam Tawfiq and Patrick J. O’Donnell

J. G. Körner

Department of Physics, University of Toronto, 60 St. George Street, Toronto Ontario, M5S 1A7, Canada

Institut für Physik, Johannes Gutenberg-Universität, Staudinger Weg 7, D-55099 Mainz, Germany

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Phys. Rev. D 58, 054010 – Published 30 July, 1998

DOI: https://doi.org/10.1103/PhysRevD.58.054010

Abstract

Light-front quark model spin-wave functions are employed to calculate the three independent couplings $g_{Σ_{c} Λ_{c} π},$ $f_{Λ_{c 1} Σ_{c} π},$ and $f_{Λ_{c 1}^{*} Σ_{c} π}$ of S wave to S wave and P wave to S wave one-pion transitions. It is found that $g_{Σ_{c} Λ_{c} π} = 6.81 {GeV}^{- 1},$ $f_{Λ_{c 1} Σ_{c} π} = 1.16,$ and $f_{Λ_{c 1}^{*} Σ_{c} π} = 0.96 \times 10^{- 4} {MeV}^{- 2} .$ We also predict decay rates for specific strong transitions of charmed baryons.

References (18)

F. Hussain, J. G. Körner, and Salam Tawfiq, ICTP preprint, IC/96/35 and Mainz preprint MZ-TH/96-10, 1996.
D. Pirjol and T. M. Yan, Phys. Rev. D 56, 5483 (1997).
CLEO Collaboration, G. Brandenburg et al., Phys. Rev. Lett. 78, 2304 (1997); ibid.CLEO Collaboration, L. Gibbons et al., 77, 810 (1996); E687 Collaboration, P. L. Frabetti et al., Phys. Lett. B 365, 461 (1996); P. L. FrabettiPhys. Rev. Lett. 72, 961 (1994); ibid.CLEO Collaboration, K. W. Edwards et al., 74, 3331 (1995); ibid.CLEO Collaboration, P. Avery et al., 75, 4364 (1995); ARGUS Collaboration, H. Albrecht et al., Phys. Lett. B 317, 227 (1993).
F. Hussain, J. G. Körner, J. Landgraf, and Salam Tawfiq, Z. Phys. C 69, 655 (1996); J. G. Körner, M. Krämer, and D. Pirjol, Prog. Part. Nucl. Phys. 33, 787 (1994).
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M.-Q. Huang, Y.-B. Dai, and C.-S. Huang, Phys. Rev. D 52, 3986 (1995).
G. Chiladze and A. Falk, Phys. Rev. D 56, 5483 (1997).
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[c1] F. Hussain, J. G. Körner, and Salam Tawfiq, ICTP preprint, IC/96/35 and Mainz preprint MZ-TH/96-10, 1996.

[c2] D. Pirjol and T. M. Yan, Phys. Rev. D 56, 5483 (1997).

[c3] CLEO Collaboration, G. Brandenburg et al., Phys. Rev. Lett. 78, 2304 (1997); ibid.CLEO Collaboration, L. Gibbons et al., 77, 810 (1996); E687 Collaboration, P. L. Frabetti et al., Phys. Lett. B 365, 461 (1996); P. L. FrabettiPhys. Rev. Lett. 72, 961 (1994); ibid.CLEO Collaboration, K. W. Edwards et al., 74, 3331 (1995); ibid.CLEO Collaboration, P. Avery et al., 75, 4364 (1995); ARGUS Collaboration, H. Albrecht et al., Phys. Lett. B 317, 227 (1993).

[c4] F. Hussain, J. G. Körner, J. Landgraf, and Salam Tawfiq, Z. Phys. C 69, 655 (1996); J. G. Körner, M. Krämer, and D. Pirjol, Prog. Part. Nucl. Phys. 33, 787 (1994).

[c5] T. M. Yan et al., Phys. Rev. D 46, 1148 (1992); (unpublished); Hai-Yang Cheng, Phys. Lett. B 399, 281 (1997).

[c6] P. Cho, Phys. Rev. D 50, 3295 (1994).

[c7] M.-Q. Huang, Y.-B. Dai, and C.-S. Huang, Phys. Rev. D 52, 3986 (1995).

[c8] G. Chiladze and A. Falk, Phys. Rev. D 56, 5483 (1997).

[c9] Particle Data Group, R. M. Barnett et al., Phys. Rev. D 54, 1 (1996); and 1997 off-year partial updated for the 1998 edition, http://pdg.lbl.gov/.

[c10] For a recent review and references, see S. J. Brodsky, H-S Pauli, and S. S. Pinsky, hep-ph/9705477.

[c11] H. J. Melosh, Phys. Rev. D 9, 1095 (1974).

[c12] L. A. Colpey, N. Isgur, and G. Karl, Phys. Rev. D 20,768 (1979).

[c13] S. Capistick and B. D. Keister, nucl-th/9611055.

[c14] D. Scora, in Particle Physics-The Factory Era, Proceedings of the Sixth Lake Louise Winter Institute, edited by B. A. Campbell et al., 1991.

[c15] F. Hussain, J. G. Körner, and G. Thompson, Ann. Phys. (N.Y.) 206, 334 (1991).

[c16] Z. Dziembowski, Phys. Rev. D 37, 778 (1988); H. J. Weber, Phys. Lett. B 209, 425 (1988); Z. Dziembowski and H. J. Weber, Phys. Rev. D 37, 1289 (1988); ibid.W. Konen and H. J. Weber, 41, 2201 (1990).

[c17] Y. Frishman and E. Gotsman, Phys. Rev. 140, B1151 (1965).

[c18] P. L. Chung and F. Coester, Phys. Rev. D 44, 229 (1991).

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Charmed baryon strong coupling constants in a light-front quark model

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