Recently it has been shown by exclusive and kinematically complete experiments that the appearance of a narrow resonance structure in double-pionic fusion reactions is strictly correlated with the appearance of the so-called ABC effect, which denotes a pronounced low-mass enhancement in the ππ-invariant mass spectrum. Whereas the resonance structure got its explanation by the d∗(2380) dibaryonic resonance, a satisfactory explanation for the ABC effect is still pending. In this paper we discuss possible explanations of the ABC effect and their consequences for the internal structure of the d∗ dibaryon.
@article{arxiv.1502.07500,
title = {Examination of the Nature of the ABC Effect},
author = {M. Bashkanov and H. Clement and T. Skorodko},
journal= {arXiv preprint arXiv:1502.07500},
year = {2016}
}