Resolving the Q<sub>β<sup>-</sup></sub> Anomaly at <sup>133</sup>Te using the Canadian Penning Trap

ORAL

Abstract

From the masses reportend in the 2020 Atomic Mass Evaluation, one can calculateQβ-(133Te)=2920(6) keV. However, the highest-lying 133I level populated in the β decay of 133Te has been observed at Ei=2935.83(15) keV, which requires an anomalous Qiβ-=-16(6) keV. With the Canadian Penning Trap mass spectrometer, we conducted precision mass measurements of 133Sb, 133g,mTe, and 133g,mI that were produced at CARIBU at Argonne National Laboratory's ATLAS facility. Our new measurements give Qβ-(133Te)=2934.8(11) keV, a factor of five more precise, yielding Qiβ=-1.0(12) keV, a 3σ shift from the previous results. This resolves this anomaly, but indicates further problems in the nuclear data.

*This work is supported in part by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357; by NSERC (Canada), Application No. SAPPJ-2018-00028; by the National Science Foundation under Grant No. PHY-2011890; by the University of Notre Dame; and with resources of ANL's ATLAS facility, an Office of Science User Facility.

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Publication: https://arxiv.org/abs/2312.06903 (Submitted to PLB)

Presenters

  • Adrian A. Valverde

    • Argonne National Laboratory

Authors

  • Adrian A. Valverde

    • Argonne National Laboratory

  • Filip G Kondev

    • Argonne National Laboratory
    • Physics Division, Argonne National Laboratory, Lemont, IL 60439, USA

  • Biying Liu

    • University of Notre Dame

  • Dwaipayan Ray

    • TRIUMF
    • McGill University

  • Maxime Brodeur

    • University of Notre Dame

  • Daniel P Burdette

    • Argonne National Laboratory

  • Nathan Callahan

    • Argonne National Laboratory

  • Alec D Cannon

    • University of Notre Dame

  • Jason Allan Clark

    • Argonne National Laboratory

  • Daniel E Hoff

    • Lawrence Livermore National Laboratory

  • Rodney Orford

    • Lawrence Berkeley National Laboratory

  • William S Porter

    • University of Notre Dame

  • Guy Savard

    • Argonne National Laboratory

  • Kumar S Sharma

    • University of Manitoba

  • Louis Varriano

    • University of Washington