Abstract
The energy dependence of forward double charge exchange (DCX) reaction is studied for the doubly closed shell nuclei 16O and 40Ca. A common characteristic of the two DCX reactions is a resonance-like peak around 50 MeV pion lab energy. While some authors have interpreted this peak as the evidence of a dibaryon resonance state, we show that it arises naturally in a two-step process in the conventional pion—nucleon system with proper handling of nuclear structure. The effects of nuclear structure are demonstrated through a comparison among different nuclear structure models: the symmetry model SU(4) ⊗ SU(3), the single particle shell model and the «realistic” shell model.
Similar content being viewed by others
References
S.J. Greene et al., Phys. Rev. C25 (1982) 927.
K. Fohl et al., Phys. Rev. Lett. 17 (1997) 3849.
J. Patzold et al., Phys. Lett. B428 (1998) 18.
R. Bilger, H. Clement and M.G. Schepkin, Phys. Rev. Lett. 71 (1993) 42; ibid. R. Bilger, H. Clement and M.G. Schepkin, Phys. Rev. Lett 72 (1994) 2972.
M. Nuseirat, M.K. Lodhi, M.O. El-Ghossain, W.R. Gibbs and W.B. Kaufmann, Phys. Rev. C58 (1998) 2292.
T.S.H. Lee, D. Kurath and B. Zeidman, Phys. Rev. Lett. 39 (1977) 1307.
H. Garcilazo and W.R. Gibbs, Nucl. Phys. A356 (1981) 284.
W.B. Kaufmann and W.R. Gibbs, Phys. Rev. C28 (1983) 1286.
H.C. Wu and W.R. Gibbs, Phys. Rev. C62 (2000) 044614.
A.R. Zuker, B. Buck and J.B. McGrory, Phys. Rev. Lett. 21 (1968) 39.
R.L. Lawson, F.J.D. Serduke and H.T. Fortune, Phys. Rev. C14 (1976) 1245.
S. Cohen and D. Kurath, Nucl. Phys. 73 (1965) 1.
S. Cohen and D. Kurath, Nucl. Phys. A101 (1967) 1.
E.R. Wigner, Phys. Rev. 51 (1937) 106.
J.R. Elliot, Proc. Roy. Soc. A245 (1958) 128; ibid. J.P. Elliot, Proc. Roy. Soc.. A245 (1958) 562.
J.C. Parikeh, Group Symmetries in Nuclear Structure, Plenum Press, New York, 1978 and references therein
R.D. Lawson, Theory of the Nuclear Shell Model, Clarendon Press, Oxford, 1980.
N. Auerbach, W.R. Gibbs, N. Ginnochio and W.B. Kaufman, Phys. Rev. C38 (1988) 1277.
M. Nuseirat, M.K. Lodhi and W.R. Gibbs, Phys. Rev. C58 (1998) 314.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Wu, H.C., Gibbs, W.R. Effects of nuclear structure in double charge exchange reactions on 16O and 40Ca. Acta Physica Hungarica A 16, 447–455 (2002). https://doi.org/10.1556/APH.16.2002.1-4.47
Received:
Issue Date:
DOI: https://doi.org/10.1556/APH.16.2002.1-4.47