The soft dipole resonances and E1 responses of 6He and 6Be Y. H. Yang, Y. G. Ma, Z. C. Xu and S. M. Wang Eur. Phys. J. A, 61 4 (2025) 69 Published online: 01 April 2025 DOI: 10.1140/epja/s10050-025-01543-3