β-delayed proton emission from 11Be in effective field theory

Elkamhawy, Wael; Yang, Zichao; Hammer, H.-W.; Platter, Lucas

doi:10.1016/j.physletb.2021.136610

Cited by 20 publications

(15 citation statements)

References 34 publications

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“…The theoretical calculations suffer from a lack of knowledge of the potential in the final state between 10 Be and the proton. The first results [19,30] gave branching ratios around 3 • 10 −8 , but higher values (up to around 10 −5 ) may be obtained if a resonance is present in the Q-window for the decay [95,96], a conclusion verified by now via several different model calculations [8,37,121]. A convincing theoretical prediction must reproduce both the β α and β p branches, as attempted with the shell model embedded in the continuum [77,78].…”

Section: Decay Of Neutron Halosmentioning

confidence: 86%

Beta decay of halo nuclei

Riisager¹

2022

Preprint

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Beta decay is a well-established and efficient probe of nuclear structure and provides important information also for halo nuclei. Detailed decay studies of near-dripline nuclei are challenging, but are now feasible due to the technical progress during the last decades in isotope production as well as detection capabilities. The halo structure can change the dynamics of the decay process, most noticably when decays proceed directly to continuum states as seems to be the case in beta-delayed deuteron emission, a process only observed until now for the halo nuclei 6 He and 11 Li. The pronounced clustering in halo states also leaves an imprint on the decay patterns, although the isospin symmetry remains important; in several cases the isobaric analogue states of halo states have also been established. Beta-delayed particle emission channels can be expected to dominate the decays of heavier halo nuclei, if not in terms of branching ratio than certainly in terms of beta strength. A remaining challenge is to find experimental as well as theoretical tools to study the multi-neutron final states that appear for most neutron dripline nuclei.

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Section: Decay Of Neutron Halosmentioning

confidence: 86%

Beta decay of halo nuclei

Riisager¹

2022

Preprint

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“…[174] fails to do so. It has been noted that a new resonance state could explain the large branching ratio, and this appears to be possible theoretically, both from direct study of the resonance properties [177] and from a study within halo-nucleus effective field theory [178]. Without a resonance, the decay rate would be very challenging to explain [179,180].…”

Section: Implications Of Apparent Bnvmentioning

confidence: 99%

Neutron Stars with Baryon Number Violation, Probing Dark Sectors

2022

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The neutron lifetime anomaly has been used to motivate the introduction of new physics with hidden-sector particles coupled to baryon number, and on which neutron stars provide powerful constraints. Although the neutron lifetime anomaly may eventually prove to be of mundane origin, we use it as motivation for a broader review of the ways that baryon number violation, be it real or apparent, and dark sectors can intertwine and how neutron star observables, both present and future, can constrain them.

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“…[170] fails to do so. It has been noted that a new resonance state could explain the large branching ratio, and this appears to be possible theoretically, both from direct study of the resonance properties [173] and from a study within halo-nucleus effective field theory [174]. Without a resonance, the decay rate would be very challenging to explain [175,176].…”

Section: Implications Of Apparent Bnvmentioning

confidence: 99%

Neutron Stars with Baryon Number Violation, Probing Dark Sectors

Berryman,

Gardner,

Zakeri

2022

Preprint

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β-delayed proton emission from 11Be in effective field theory

Cited by 20 publications

References 34 publications

Beta decay of halo nuclei

Beta decay of halo nuclei

Neutron Stars with Baryon Number Violation, Probing Dark Sectors

Neutron Stars with Baryon Number Violation, Probing Dark Sectors

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