Abstract
The spin content of the proton is investigated by studying the flavor singlet axial structure of the nucleon in a non-topological chiral soliton model. In order to construct a nucleon state we used the generator coordinate projection method as well as a coherent state for the meson wave function. Using a standard set of parameters we found the value g 0A ≃ 0.44 for the flavor singlet axial vector coupling constant. This result is not far from that of a typical valence quark model.
Similar content being viewed by others
References
EMC Collaboration, Ashman, J., et al.: Phys. Lett. B206, 364 (1988)
Brodsky, S., Ellis, J., Karliner, M.: Phys. Lett. B206, 309 (1988)
Altarelli, G., Ross, G.G.: Phys. Lett. B212, 391 (1988); Carlitz, R.D., Collins, J.C., Mueller, A.H.: Phys. Lett. B214, 229 (1988); Park, B.-Y., Vento, V.: Preprint University of Valencia, FTUV/89-23
Birse, M.C., Banerjee, M.K.: Phys. Lett. B136, 284 (1984); Phys. Rev. D31, 118 (1985); Kahana, S., Ripka, G., Soni, V.: Nucl. Phys. A415, 351 (1984)
Birse, M.C.: Phys. Rev. D33, 1934 (1986); Goeke, K., Harvey, M., Grümmer, F., Urbano, J.N.: Phys. Rev. D37, 754 (1988)
Fiolhais, M., Goeke, K., Grümmer, F., Urbano, J.N.: Nucl. Phys. A481 727 (1988)
Peierls, R.E., Yoccoz, J.: Proc. Roy. Soc. London A70, 381 (1957)
Adkins, G.S., Nappi, C.R., Witten, E.: Nucl. Phys. B228, 552 (1983); Zahed, I., Brown, G.E.: Phys. Rep.142, 1 (1986)
Park, B.-Y., Vento, V., Rho, M., Brown, G.E.: Nucl. Phys. A505, 829 (1989); Hosaka, A., Weise, W.: Phys. Lett. B232, 442 (1989)
Stern, J., Clement, G.: Preprint Saclay, SPhT/89/107 (1989)
See, for example: Cheng, T.-P, Li, L.-F.: Gauge theory of elementary particle physics, Oxford: Oxford University Press 1982
Kalmbach, U., Schäfer, T., Biro, T.S., Mosel, U.: Preprint Universität Giessen, UGI 89-10 (1989); Nucl. Phys. A513, 621 (1990)
Wakamatsu, M.: Phys. Lett. B232, 251 (1989)
Cohen, T.D., Banerjee, M.K.: Phys. Lett. B230, 129 (1989); Bernard, V, Kaiser, N., Meißner, U.-G.: Phys. Lett. B237, 545 (1990)
Author information
Authors and Affiliations
Additional information
Work supported in part by DFG grant We 665/9-3
We thank W. Weise for useful discussions and comments. A.H. is grateful to R. Amado and M. Oka for discussions and a careful reading of the manuscript.
Rights and permissions
About this article
Cite this article
Hosaka, A., Schäfer, T. & Kalmbach, U. Spin content of the nucleon in a non-topological chiral soliton model. Z. Physik A - Atomic Nuclei 337, 447–450 (1990). https://doi.org/10.1007/BF01294982
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01294982