Spectroscopy of excited states of unbound nuclei 
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 and 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cl</mml:mi><mml:mprescripts /><mml:none /><mml:mn>29</mml:mn></mml:mmultiscripts></mml:math>

Xu, X.; Mukha, I.; Grigorenko, L. V.; Scheidenberger, C.; Acosta, L.; Casarejos, E.; Chudoba, V.; Ciemny, A. A.; Dominik, W.; Duénas-Díaz, J.; Dunin, V. B.; Espino, J. M.; Estradé, A.; Farinon, F.; Фомичев, А. С.; Geißel, H.; Golubkova, T. A.; Gorshkov, A. V.; Janas, Z.; Kamiński, G.; Kiselev, O.; Knöbel, R.; Krupko, S. A.; Kuich, M.; Litvinov, Yu. A.; Marquínez-Durán, G.; Martel, I.; Mazzocchi, C.; Nociforo, C.; Orduz, Angie; Pfützner, M.; Pomorski, M.; Procházka, A.; Rymzhanova, S.; Sánchez-Benítez, Á. M.; Sharov, P. G.; Simon, H.; Sitár, B.; Slepnev, R. S.; Stănoiu, M.; Strmeň, P.; Szarka, I.; Takechi, M.; Tanaka, Y. K.; Weick, H.; Winkler, M.; Winfield, J. S.

doi:10.1103/physrevc.97.034305

Cited by 13 publications

(31 citation statements)

References 32 publications

(237 reference statements)

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“…For masses below 1 GeV, the experimental sensitivity is much worse. The DM-nucleon cross section for sub-GeV DM is constrained by cosmological and astrophysical limits to be less than ∼ 10 −28 cm 2 [16][17][18][19][20][21], but this is more than fifteen orders of magnitude weaker than direct detection constraints on GeV-scale DM. And while colliderbased limits probe much smaller cross sections, they are more model dependent.…”

Section: Introductionmentioning

confidence: 99%

Strong new limits on light dark matter from neutrino experiments

2019

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The non-detection of GeV-scale WIMPs has led to increased interest in more general candidates, including sub-GeV dark matter. Direct detection experiments, despite their high sensitivity to WIMPs, are largely blind to sub-GeV dark matter. Recent work has shown that cosmic-ray elastic scattering with sub-GeV dark matter would both alter the observed cosmic ray spectra and produce a flux of relativistic dark matter, which would be detectable with traditional dark matter experiments as well as larger, higher-threshold detectors for neutrinos. Using data, detectors, and analysis techniques not previously considered, we substantially increase the regions of parameter space excluded by neutrino experiments for both dark matter-nucleon and dark matter-electron elastic scattering. We also show how to further improve sensitivity to light dark matter.

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Section: Introductionmentioning

confidence: 99%

Strong new limits on light dark matter from neutrino experiments

2019

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“…In particular, a 3p-unbound nuclear system of 31 K was populated in a charge-exchange reaction. This mechanism has lower cross section than knockout reactions, and the obtained data have smaller statistics than in the previously-mentioned case [8]. In spite of poor statistics with few events registered, we have obtained several nuclear-structure conclusions from the data.…”

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confidence: 65%

“…In this work we continue the "excursion beyond the proton dripline" of Ref. [1] by presenting the results of additional analysis of the data obtained with a 31 Ar secondary beam [8]. In the experiment, described in detail in Refs.…”

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confidence: 89%

“…In the experiment, described in detail in Refs. [1,8], the 31 Ar beam was produced by the fragmentation of a primary 885 MeV/u 36 Ar beam at the SIS-FRS facility at GSI (Germany). The previous objectives of the experiment were studies of 2p decays of 29,30,31 Ar isotopes.…”

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confidence: 99%

“…The highprecision position measurement by DSSDs allowed for reconstruction of all fragment trajectories, which let us to derive the decay vertex together with angular HI-p and HI-p 1 -p 2 correlations. For example, the trajectories of measured 28 S+p+p coincidences served for the analysis, and the spectroscopic information on 30 Ar was concluded [8]. The spectra of 30 Ar were observed by using 2p angular correlations as function of their root-mean-square angle relative to 28 S,…”

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confidence: 99%

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Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope K31 by Measuring Its Three-Proton Decay

Kostyleva¹,

Mukha²,

Acosta³

et al. 2019

Phys. Rev. Lett.

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The most-remote from stability isotope 31 K, which is located four atomic mass units beyond the proton drip line, has been observed. It is unbound in respect to three-proton (3p) emission, and its decays have been detected in flight by measuring trajectories of all decay products using micro-strip detectors. The 3p-emission processes have been studied by means of angular correlations 28 S+3p and the respective decay vertexes. The energies of the previously-unknown ground and excited states of 31 K have been determined. This provides its 3p separation-energy value S3p of −4.6(2) MeV. Upper half-life limits of 10 ps of the observed 31 K states have been derived from distributions of the measured decay vertexes.

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Recent progress in two-proton radioactivity

et al. 2022

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During the last few decades, rare isotope beam facilities have provided unique data for studying the properties of nuclides located far from the beta-stability line. Such nuclei are often accompanied by exotic structures and radioactive modes, which represent the forefront of nuclear research. Among them, two-proton (2p) radioactivity is a rare decay mode found in a few highly proton-rich isotopes. The 2p decay lifetimes and properties of emitted protons hold invaluable information regarding the nuclear structures in the presence of a low-lying proton continuum; as such, they have attracted considerable research attention. In this review, we present some of the recent experimental and theoretical progress regarding the 2p decay, including technical innovations for measuring nucleonnucleon correlations and developments in the models that connect their structural aspects with their decay properties. This impressive progress should play a significant role in elucidating the mechanism of these exotic decays, probing the corresponding components inside nuclei, and providing deep insights into the open quantum nature of dripline systems.

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Spectroscopy of excited states of unbound nuclei Ar30 and Cl29

Cited by 13 publications

References 32 publications

Strong new limits on light dark matter from neutrino experiments

Strong new limits on light dark matter from neutrino experiments

Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope K31 by Measuring Its Three-Proton Decay

Recent progress in two-proton radioactivity

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