Back to Search
Start Over
A Search for $0^+$ States in $^{50}$Cr: Implications for the Superallowed $\beta$-decay of $^{50}$Mn
- Source :
- Phys.Rev.C94:011304,2016
- Publication Year :
- 2016
-
Abstract
- A $^{52}$Cr$(p,t)$$^{50}$Cr two-neutron pickup reaction was performed using the Q3D magnetic spectrograph at the Maier-Leibnitz-Laboratorium in Garching, Germany. Excited states in $^{50}$Cr were observed up to an excitation energy of 5.3 MeV. Despite significantly increased sensitivity and resolution over previous work, no evidence of the previously assigned first excited $0^+$ state was found. As a result, the $0^+_2$ state is reassigned at an excitation energy of $E_x=3895.0(5)$ keV in $^{50}$Cr. This reassignment directly impacts direct searches for a non-analogue Fermi $\beta^+$ decay branch in $^{50}$Mn. These results also show better systematic agreement with the theoretical predictions for the $0^+$ state spectrum in $^{50}$Cr using the same formalism as the isospin-symmetry-breaking correction calculations for superallowed nuclei. The experimental data are also compared to $ab$-$initio$ shell-model predictions using the IM-SRG formalism based on $NN$ and $3N$ forces from chiral-EFT in the $pf$-shell for the first time.<br />Comment: Accepted for Publication in Physical Review C as a Rapid Communication
- Subjects :
- Nuclear Experiment
Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys.Rev.C94:011304,2016
- Publication Type :
- Report
- Accession number :
- edsarx.1607.02540
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.94.011304