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First on-line commissioning experiments at the St. Benedict facility Open
Nuclear beta decays provide an excellent probe of fundamental symmetries due to their mediation by the weak interaction. In particular, precise measurements of these decays provide constraints on the unitarity of the Cabbibo-Kobayashi-Mask…
$^{28}$Al Half-life Measurement and the negative mirror asymmetry between the $^{28}$Al($β^-$)$^{28m}$Si and $^{28}$P($β^+$)$^{28m}$Si decays Open
In the past, the mirror asymmetry parameter has been proposed as a probing mechanism for the presence of beyond the Standard Model second-class currents in nuclear beta decay transitions. However, this was hindered by large uncertainties i…
View article: Off-line Commissioning of the St. Benedict Radiofrequency Quadrupole Cooler-Buncher
Off-line Commissioning of the St. Benedict Radiofrequency Quadrupole Cooler-Buncher Open
The St. Benedict ion trapping system, which aims to measure the $β-ν$ angular correlation parameter in superallowed-mixed mirror transitions, is under construction at the University of Notre Dame. These measurements will provide much-neede…
The Enge Split-Pole Spectrograph at the University of Notre Dame Open
Nuclear reactions play a crucial role in determining the nucleosynthesis that occurs in astrophysical events. The rates of many reactions that significantly impact certain nucleosynthesis processes can not be currently measured via direct …
View article: Experimental study of <sup>6</sup>He Coulomb breakup as an indirect measurement of <sup>4</sup>He(2n,<i>γ</i>)<sup>6</sup>He reaction rate for the astrophysical r-process
Experimental study of <sup>6</sup>He Coulomb breakup as an indirect measurement of <sup>4</sup>He(2n,<i>γ</i>)<sup>6</sup>He reaction rate for the astrophysical r-process Open
In this work, we report the measurement of elastic and Coulomb break-up channels in 6 He+ 208 Pb collisions at E lab = 19.3 MeV, close to the Coulomb barrier of this system ∼ 19 MeV. In the context of the astrophysical r-process, the react…
View article: On-line installation of the Superallowed Transition Beta-Neutrino Decay Ion Coincidence Trap
On-line installation of the Superallowed Transition Beta-Neutrino Decay Ion Coincidence Trap Open
The Cabibbo-Kobayashi-Maskawa quark mixing matrix currently does not satisfy unitarity at the 2 σ -level. This could be the result of an inaccurate value of one or both of its largest matrix elements V us and V ud . In the case of V ud , t…
View article: The St. Benedict Facility: Probing Fundamental Symmetries through Mixed Mirror β-Decays
The St. Benedict Facility: Probing Fundamental Symmetries through Mixed Mirror β-Decays Open
Precise measurements of nuclear beta decays provide a unique insight into the Standard Model due to their connection to the electroweak interaction. These decays help constrain the unitarity or non-unitarity of the Cabibbo–Kobayashi–Maskaw…