Abstract.
The spin and isospin structure of the amplitudes and observables for K+Λ production in nucleon-nucleon collisions in the near-threshold region is analysed. Five experiments are required in order to isolate the amplitudes, up to an overall phase and two discrete ambiguities, in a model-independent way. It is shown that, with reasonable values for the relative strengths of the π and ρ terms in a meson-exchange model, one expects production on the neutron to be significantly stronger than that on the proton. Negative values of the spin-transfer coefficient DNN are also predicted due to π-ρ interference.
Similar content being viewed by others
References
P. Moskal et al., Prog. Part. Nucl. Phys. 49, 1 (2002).
C. Hanhart, Phys. Rep. 397, 155 (2004).
G. Fäldt, C. Wilkin, Phys. Lett. B 382, 209 (1996).
H. Calén et al., Phys. Rev. C 58, 2667 (1998).
J.-F. Germond, C. Wilkin, Nucl. Phys. A 518, 308 (1990).
G. Fäldt, C. Wilkin, Phys. Scr. 64, 427 (2001).
K. Nakayama, J. Speth, T.S.H. Lee, Phys. Rev. C 65, 045210 (2002).
V. Baru et al., Phys. Rev. C 67, 024002 (2003).
J.T. Balewski et al., Phys. Lett. B 388, 859 (1996)
P. Kowina et al., Eur. Phys. J. A 22, 293 (2004).
R. Bilger et al., Phys. Lett. B 420, 217 (1998).
W. Schroeder, Eur. Phys. J. A 18, 347 (2003)
Y. Valdau, Int. J. Mod. Phys. A 20, 677 (2005).
J.M. Laget, Phys. Lett. B 259, 24 (1991).
G. Fäldt, C. Wilkin, Z. Phys. A 357, 241 (1997).
K. Tsushima et al., Phys. Rev. C 59, 369 (1999).
R. Shyam, Phys. Rev. C 60, 055213 (1999)
A. Gasparian et al., Phys. Lett. B 480, 273 (2000).
Th.A. Rijken, V.G.J. Stoks, Y. Yamamoto, Phys. Rev. C 59, 21 (1999).
See, for example, H. Pilkuhn, The Interactions of Hadrons (North-Holland, Amsterdam, 1967).
D.M. Binnie et al., Phys. Rev. D 8, 2789 (1973).
L. Tiator et al., Phys. Rev. C 60, 035210 (1999).
J.J. Jones et al., Phys. Rev. Lett. 26, 860 (1971)
K.-H. Glander et al., Eur. Phys. J. A 19, 251 (2004).
F. Hinterberger, A. Sibirtsev, Eur. Phys. J. A 21, 313 (2004).
G. Alexander et al., Phys. Rev. 173, 1452 (1968).
A. Gasparyan, private communication.
F. Balestra et al., Phys. Rev. Lett. 83, 1534 (1999).
Author information
Authors and Affiliations
Corresponding author
Additional information
A. Molinari
Rights and permissions
About this article
Cite this article
Fäldt, G., Wilkin, C. Spin and isospin effects in the NN → NKΛ reaction near threshold. Eur. Phys. J. A 24, 431–435 (2005). https://doi.org/10.1140/epja/i2004-10207-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1140/epja/i2004-10207-5