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Study of the ABC Enhancement in the d d -> alpha X reaction

R. Wurzinger·O. Bing·M. Boivin·P. Courtat·G. Faldt·R. Gacougnolle·A. Gardestig·F. Hibou·Y. Le Bornec·J. M. Martin·F. Plouin·B. Tatischeff·C. Wilkin·N. Willis·J. Yonnet·A. Zghiche
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Abstract

The polarized d d -> alpha X reaction at beam energies close to the eta threshold shows very strong structure in the missing mass corresponding to the ABC enhancement. The deuteron tensor analysing power A_yy, and the slope of the vector analysing power A_y with respect to angle, have been measured for this reaction around the forward direction. Both signals are small, and their variations with the alpha-particle momentum are in broad agreement with a theoretical model in which each pair of nucleons in the projectile and target deuterons undergoes pion production through the NN -> d pi reaction.

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R. Wurzinger, O. Bing, M. Boivin, P. Courtat, G. Faldt, R. Gacougnolle, A. Gardestig, F. Hibou, Y. Le Bornec, J. M. Martin, F. Plouin, B. Tatischeff, C. Wilkin, N. Willis, J. Yonnet, A. Zghiche. 1998-10-16. Study of the ABC Enhancement in the d d -> alpha X reaction. https://doi.org/10.1016/s0370-2693(98)01464-6

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