CERN Accelerating science

Article
Report number	arXiv:2205.04973
Title	Evidence of a near-threshold resonance in $^{11}$B relevant to the $\beta$-delayed proton emission of $^{11}$Be
Related title	Evidence of a Near-Threshold Resonance in B11 Relevant to the β-Delayed Proton Emission of Be11
Author(s)	Ayyad, Y. (Santiago de Compostela U., IGFAE ; Michigan State U., East Lansing (main)) ; Mittig, W. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Tang, T. (Michigan State U., East Lansing (main)) ; Olaizola, B. (CERN) ; Potel, G. (LLNL, Livermore) ; Rijal, N. (Michigan State U., East Lansing (main)) ; Watwood, N. (Michigan State U., East Lansing (main)) ; Alvarez-Pol, H. (Santiago de Compostela U., IGFAE) ; Bazin, D. (Michigan State U. ; Michigan State U., East Lansing (main)) ; Caamaño, M. (Santiago de Compostela U., IGFAE) ; Chen, J. (Argonne, PHY) ; Cortesi, M. (Michigan State U., East Lansing (main)) ; Fernández-Domínguez, B. (Santiago de Compostela U., IGFAE) ; Giraud, S. (Michigan State U., East Lansing (main)) ; Gueye, P. (Michigan State U., East Lansing (main) ; Michigan State U.) ; Heinitz, S. (PSI, Villigen) ; Jain, R. (Michigan State U., East Lansing (main) ; Michigan State U.) ; Kay, B.P. (Argonne, PHY) ; Maugeri, E.A. (PSI, Villigen) ; Monteagudo, B. (Michigan State U., East Lansing (main)) ; Ndayisabye, F. (Michigan State U., East Lansing (main) ; Michigan State U.) ; Paneru, S.N. (Michigan State U., East Lansing (main)) ; Pereira, J. (Michigan State U., East Lansing (main)) ; Rubino, E. (Michigan State U., East Lansing (main)) ; Santamaria, C. (Michigan State U., East Lansing (main)) ; Schumann, D. (PSI, Villigen) ; Surbrook, J. (Michigan State U., East Lansing (main) ; Michigan State U.) ; Wagner, L. (Michigan State U., East Lansing (main)) ; Zamora, J.C. (Michigan State U., East Lansing (main)) ; Zelevinsky, V. (Michigan State U., East Lansing (main) ; Michigan State U.)
Publication	2022-06-28
Imprint	2022-05-10
Number of pages	6
In:	Phys. Rev. Lett. 129 (2022) 012501
DOI	10.1103/PhysRevLett.129.012501 (publication)
Subject category	nucl-ex ; Nuclear Physics - Experiment
Abstract	A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J$^{\pi}$ = 1/2$^{+}$ and $\Gamma_{p}$ = 4.4 keV) was directly observed in $^{11}$B via proton resonance scattering. This resonance was previously inferred in the $\beta$-delayed proton emission of the neutron halo nucleus $^{11}$Be. The good agreement between both experimental results serves as a ground to confirm the existence of such exotic decay and the particular behavior of weakly bound nuclei coupled to the continuum. $R$-matrix analysis shows a sizable partial decay width for both, proton and $\alpha$ emission channels.
Copyright/License	preprint: (License: CC BY 4.0) publication: © 2022-2024 authors (License: CC-BY-4.0)

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