CERN Accelerating science

Preprint
Report number	arXiv:2409.12594
Title	Probing exotic cross-shell interactions at $N=28$ with single-neutron transfer on $^{47}$K
Author(s)	Paxman, C.J. (Surrey U.) ; Matta, A. (LPC, Caen) ; Catford, W.N. (Surrey U.) ; Lotay, G. (Surrey U.) ; Assié, M. (IJCLab, Orsay) ; Clément, E. (GANIL) ; Lemasson, A. (GANIL) ; Ramos, D. (GANIL) ; Orr, N.A. (LPC, Caen) ; Galtarossa, F. (IJCLab, Orsay) ; Girard-Alcindor, V. (GANIL) ; Dudouet, J. (IP2I, Lyon) ; Achouri, N.L. (LPC, Caen) ; Ackermann, D. (GANIL) ; Barrientos, D. (CERN) ; Beaumel, D. (IJCLab, Orsay) ; Bednarczyk, P. (Cracow, INP) ; Benzoni, G. (INFN, Milan) ; Bracco, A. (INFN, Milan ; Milan U.) ; Canete, L. (Surrey U.) ; Cederwall, B. (Royal Inst. Tech., Stockholm) ; Ciemala, M. (Cracow, INP) ; Delahaye, P. (GANIL) ; Doherty, D.T. (Surrey U.) ; Domingo-Pardo, C. (Valencia U., IFIC) ; Fernández-Domínguez, B. (Santiago de Compostela U., IGFAE) ; Fernández, D. (Santiago de Compostela U., IGFAE) ; Flavigny, F. (LPC, Caen) ; Fougères, C. (GANIL) ; de France, G. (GANIL) ; Franchoo, S. (IJCLab, Orsay) ; Gadea, A. (Valencia U., IFIC) ; Gibelin, J. (LPC, Caen) ; González, V. (U. Valencia (main)) ; Gottardo, A. (INFN, Legnaro) ; Goyal, N. (GANIL) ; Hammache, F. (IJCLab, Orsay) ; Harkness-Brennan, L.J. (Liverpool U.) ; Harrouz, D.S. (IJCLab, Orsay) ; Jacquot, B. (GANIL) ; Judson, D.S. (Liverpool U.) ; Jungclaus, A. (CSIC, Madrid) ; Kaşkaş, A. (Ankara U.) ; Korten, W. (IRFU, Saclay) ; Labiche, M. (Daresbury) ; Lalanne, L. (IJCLab, Orsay ; GANIL) ; Lenain, C. (LPC, Caen) ; Leoni, S. (INFN, Milan ; Milan U.) ; Ljungvall, J. (IJCLab, Orsay) ; Lois-Fuentes, J. (Santiago de Compostela U., IGFAE) ; Lokotko, T. (LPC, Caen) ; Lopez-Martens, A. (IJCLab, Orsay) ; Maj, A. (Cracow, INP) ; Marqués, F.M. (LPC, Caen) ; Martel, I. (Huelva U.) ; Menegazzo, R. (INFN, Padua) ; Mengoni, D. (INFN, Padua ; U. Padua, Dept. Phys. Astron.) ; Million, B. (INFN, Milan) ; Nyberg, J. (Uppsala U.) ; Pérez-Vidal, R.M. (Valencia U., IFIC ; INFN, Legnaro) ; Plagnol, L. (LPC, Caen) ; Podolyák, Zs. (Surrey U.) ; Pullia, A. (INFN, Milan ; Milan U.) ; Quintana, B. (Salamanca U.) ; Regueira-Castro, D. (Santiago de Compostela U., IGFAE) ; Reiter, P. (Cologne U.) ; Rejmund, M. (GANIL) ; Rezynkina, K. (Strasbourg, IPHC ; INFN, Padua) ; Sanchis, E. (U. Valencia (main)) ; Şenyiğit, M. (Ankara U.) ; de Séréville, N. (IJCLab, Orsay) ; Siciliano, M. (INFN, Legnaro ; IRFU, Saclay ; Argonne, PHY) ; Sohler, D. (Debrecen, Inst. Nucl. Res.) ; Stezowski, O. (IP2I, Lyon) ; Thomas, J.-C. (GANIL) ; Utepov, A. (GANIL) ; Valiente-Dobón, J.J. (INFN, Legnaro) ; Verney, D. (IJCLab, Orsay) ; Zielińska, M. (IRFU, Saclay)
Imprint	2024-09-19
Number of pages	7
Note	7 pages, 3 figures, 1 table
Subject category	nucl-ex ; Nuclear Physics - Experiment
Abstract	We present the first measurement of the $^{47}$K($d,p\gamma$)$^{48}$K transfer reaction, performed in inverse kinematics using a reaccelerated beam of $^{47}$K. The level scheme of $^{48}$K has been greatly extended with nine new bound excited states identified and spectroscopic factors deduced. Detailed comparisons with SDPF-U and SDPF-MU shell-model calculations reveal a number of discrepancies with these results, and a preference for SDPF-MU is found. Intriguingly, an apparent systematic overestimation of spectroscopic factors and a poor reproduction of the energies for 1$^-$ states suggests that the mixing between the $\pi s^{\,\,\,1}_{1/2} d^{\,\,\,4}_{3/2}$ and $\pi s^{\,\,\,2}_{1/2} d^{\,\,\,3}_{3/2}$ proton configurations in $^{48}$K is not correctly described using current interactions, challenging our descriptions of light $N=28$ nuclei.
Other source	Inspire
Copyright/License	preprint: (License: CC BY 4.0)