Precision mass measurement of Zn 61 and updated F t value for conserved vector current tests

Physical Review C 2026 Open access

Read full text
Authors: Paul F. Giesel, D. Atanasov, K. Blaum, Paul Fischer, J. Karthein, I.I. Kulikov, Yu. A. Litvinov, David Lunney, M. Mougeot, L. Nies, L. Schweikhard, V. Virtanen
+1 more F. Wienholtz
DOI: 10.1103/fbf3-nry6
Cited by: 0
References: 26

Abstract

We report a high-precision mass measurement of Zn 61 , performed with the ISOLTRAP mass spectrometer at ISOLDE, CERN. Our result agrees with a recent measurement from the LEBIT Penning trap at FRIB and reduces the mass uncertainty by a factor of four. Combined with recent measurements of the mirror nuclide Ga 61 performed by TITAN at TRIUMF and CSRe at HIRFL, we obtain a more accurate Q value. This new value slightly improves the determination of the corresponding F t value in the T z = 1 / 2 mirror beta decays used to test the conserved vector current hypothesis in the standard model.

Fields of Study & Subjects

Particle physics theoretical and experimental studies Nuclear physics research studies Astronomical and nuclear sciences

Publication details

Journal / source
Physical Review C
Volume
113
Issue
3
Pages
034318
Publication date
18 February 2026
Language
EN