Abstract
The importance of approximate isospin selection rules observed inN¯ N annihilation at rest into two strange mesons is emphasized. The selection rules are traced back to a symmetry between amplitudes describing annihilation by the flux of quarks. Presumably the symmetry reflects the symmetry of ¯qq annihilation vertices. The relation of the symmetry to a quark — diquark substructure of the nucleon is discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Girija, V., Tabakin, F.: Phys. Rev. C34, 1798 (1986)
Dover, C.B., Fishbane, P.M.: Nucl. Phys. B244 349 (1984)
Kohno, M., Weise, W.: Phys. Lett. B152, 303 (1985)
Barash, N. et al.: Phys. Rev.139, B1659 (1965)
Conforto, B. et al.: Nucl. Phys. B3 469 (1967)
Bettini, A. et al.: Nuovo Cimento A63, 1199 (1969)
Hartmann, U., Klempt, E., Körner, J.: Z. Phys. A — Atomic Nuclei331, 217 (1988)
Armenteros, R., French, B.: High energy physics. Burkop, E.H.S. (ed.), Vol. IV., p. 284, London: Academic Press 1969; see also R. Armenteros et al.: CERN Proposal P28/PS171 (1980) for updated results
Smith, G.A.: Charged two-meson production from NIV annihilation at rest. Pennsylvania State University, PSU/HEP 87-04
Bettini, A. et al.: Nuovo Cimento A62, 1038 (1969)
Wycech, S. et al.: Phys. Lett. B152, 308 (1985)
Bizzarri, R. et al.: Nucl. Phys. B69, 298 (1974)
Bizzarri, R. et al.: Nucl. Phys. B69, 307 (1974)
Gray, L. et al.: Phys. Rev. Lett.30, 1091 (1973)
Doser, M. et al.:¯pp annihilation intoπ +π− andK +K− from atomicP states. Nucl. Phys. A (submitted)
Hartmann, U., Klempt, E., Körner, J.: Phys. Lett. B155, 163 (1985)
Author information
Authors and Affiliations
Additional information
Stimulating discussions with R. Armenteros and J. Körner are gratefully acknowledged.