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Angular Correlations in the β Decay of B 8 : First Tensor-Current Limits from a Mirror-Nucleus Pair

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [5];  [9];  [10];  [3];  [11];  [12];  [3];  [1];  [11];  [3];  [13] more »;  [14];  [15];  [16];  [11];  [17];  [11];  [18];  [2];  [3] « less
  1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
  2. University of Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
  3. Argonne National Laboratory (ANL), Argonne, IL (United States)
  4. University of Notre Dame, IN (United States)
  5. McGill University, Montréal, QC (Canada)
  6. Argonne National Laboratory (ANL), Argonne, IL (United States); University of Notre Dame, IN (United States)
  7. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); University of Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States)
  8. University of Chicago, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); University of Manitoba, Winnipeg, MB (Canada)
  9. University of California, Berkeley, CA (United States)
  10. Louisiana State University, Baton Rouge, LA (United States); Michigan State University, East Lansing, MI (United States)
  11. University of Manitoba, Winnipeg, MB (Canada)
  12. Soreq Nuclear Research Center, Yavne (Israel)
  13. Argonne National Laboratory (ANL), Argonne, IL (United States); McGill University, Montreal, QC (Canada); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  14. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Arcfield, Colorado Springs, CO (United States)
  15. University of Notre Dame, IN (United States); Sorbonne Université, Paris (France)
  16. Argonne National Laboratory (ANL), Argonne, IL (United States); Vertex Pharmaceuticals, San Diego, CA (United States)
  17. Northwestern University, Evanston, IL (United States)
  18. University of Notre Dame, IN (United States); University of Tennessee, Knoxville, TN (United States)
+ Show Author Affiliations
We present the first measurement of the α–β–ν angular correlation in the Gamow-Teller β+ decay of 8B. This was accomplished using the Beta-decay Paul Trap, expanding on our previous work on the β– decay of 8Li. The 8B result is consistent with the V – A electroweak interaction of the standard model and, on its own, provides a limit on the exotic right-handed tensor current relative to the axial-vector current of |CT/CA|2 < 0.013 at the 95.5% confidence level. This represents the first high-precision angular correlation measurements in mirror decays and was made possible through the use of an ion trap. Here, by combining this 8B result with our previous 8Li results, we demonstrate a new pathway for increased precision in searches for exotic currents.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-06CH11357; AC52-07NA27344
OSTI ID:
2008163
Alternate ID(s):
OSTI ID: 1973527
Report Number(s):
LLNL--JRNL-833883; 1052172
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 130; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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6 ≤ A ≤ 19
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