$Evidence of a near-threshold resonance in $^{11}$B relevant to the $\beta$-delayed proton emission of $^{11}$Be$

Evidence of a near-threshold resonance in $^{11}$B relevant to the $\beta$-delayed proton emission of $^{11}$Be

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 \...

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Veröffentlicht in:	arXiv.org 2022-05
Hauptverfasser:	Ayyad, Y, Mittig, W, Tang, T, Olaizola, B, Potel, G, Rijal, N, Watwood, N, Alvarez-Pol, H, Bazin, D, Caamaño, M, Chen, J, Cortesi, M, Fernández-Domínguez, B, Giraud, S, Gueye, P, Heinitz, S, Jain, R, Kay, B P, Maugeri, E A, Monteagudo, B, Ndayisabye, F, Paneru, S N, Pereira, J, Rubino, E, Santamaria, C, Schumann, D, Surbrook, J, Wagner, L, Zamora, J C, Zelevinsky, V
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Sprache:	eng
Schlagworte:	Decay Emission Matrix methods Proton resonance Resonance scattering
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creator	Ayyad, Y Mittig, W Tang, T Olaizola, B Potel, G Rijal, N Watwood, N Alvarez-Pol, H Bazin, D Caamaño, M Chen, J Cortesi, M Fernández-Domínguez, B Giraud, S Gueye, P Heinitz, S Jain, R Kay, B P Maugeri, E A Monteagudo, B Ndayisabye, F Paneru, S N Pereira, J Rubino, E Santamaria, C Schumann, D Surbrook, J Wagner, L Zamora, J C Zelevinsky, V
description	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.
doi_str_mv	10.48550/arxiv.2205.04973
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subjects	Decay Emission Matrix methods Proton resonance Resonance scattering
title	Evidence of a near-threshold resonance in $^{11}$B relevant to the $\beta$-delayed proton emission of $^{11}$Be
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Evidence of a near-threshold resonance in \(^{11}\)B relevant to the \(\beta\)-delayed proton emission of \(^{11}\)Be