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Hyperfine Interactions

, 240:36 | Cite as

Precision βν correlation measurements with the Beta-decay Paul Trap

  • Mary T. BurkeyEmail author
  • Guy Savard
  • Aaron Gallant
  • Nicholas D. Scielzo
  • Jason A. Clark
  • Tsviki Y. Hirsh
  • Daniel P. Burdette
  • Elizabeth Heckmaier
  • Jeffrey Klimes
  • Kay Kolos
  • Scott T. Marley
  • Graeme E. Morgan
  • Rodney Orford
  • Stephen Padgett
  • Jacob Pierce
  • Ralph Segel
  • Kumar S. Sharma
  • Louis Varriano
  • Barbara S. Wang
Article
Part of the following topical collections:
  1. Proceedings of the 7th International Conference on Trapped Charged Particles and Fundamental Physics (TCP 2018), Traverse City, Michigan, USA, 30 September-5 October 2018

Abstract

The Beta-decay Paul Trap (BPT) at Argonne National Laboratory has proven to be an extremely effective tool for high-precision tests of the Standard Model via measurements of the βν correlation in mass-8 isotopes. Using four double-sided silicon strip detectors (DSSDs) backed by plastic scintillators and surrounding the ions confined by the BPT, the kinematics of the decays of the mirror nuclei lithium-8 and boron-8 are overdetermined when all charged decay products are measured. The most stringent low-energy limit on an intrinsic tensor current in the weak interaction was set using the BPT in 2015 (Sternberg, M.G., et al., Phys. Rev. Lett. 115, 182501 2015) utilizing trapped lithium-8. Since then, similar data for boron-8 and higher statistics data for lithium-8 have been collected and are currently being analyzed. With the elimination of radio-frequency (RF) pickup from the DSSDs and a detailed investigation of experimental systematic errors, the uncertainty is now dominated by the contribution from recoil-order terms in the decay rate. Our eventual goal is to limit tensor currents in the weak interaction with relative precision at or below 0.1%.

Keywords

Beta-neutrino correlation Ion trapping Paul trap 

Notes

Acknowledgments

We acknowledge Natural Sciences and Engineering Research Council, Canada, App. No. 216974, the U.S. Department of Energy Contract No. DE-AC02-06CH11357 [Argonne National Laboratory] and DE-AC52-07NA27344 [Lawrence Livermore National Laboratory], National Science Foundation grant no. 1144082 and the Argonne National Laboratory ATLAS facility.

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Authors and Affiliations

  • Mary T. Burkey
    • 1
    • 2
    Email author
  • Guy Savard
    • 1
    • 2
  • Aaron Gallant
    • 3
  • Nicholas D. Scielzo
    • 3
  • Jason A. Clark
    • 2
    • 4
  • Tsviki Y. Hirsh
    • 5
  • Daniel P. Burdette
    • 2
    • 6
  • Elizabeth Heckmaier
    • 3
  • Jeffrey Klimes
    • 1
    • 2
    • 6
    • 7
  • Kay Kolos
    • 3
  • Scott T. Marley
    • 8
  • Graeme E. Morgan
    • 8
  • Rodney Orford
    • 2
    • 9
  • Stephen Padgett
    • 3
  • Jacob Pierce
    • 1
    • 2
  • Ralph Segel
    • 10
  • Kumar S. Sharma
    • 4
  • Louis Varriano
    • 1
    • 2
  • Barbara S. Wang
    • 3
  1. 1.Department of PhysicsUniversity of ChicagoChicagoUSA
  2. 2.Physics DivisionArgonne National LaboratoryLemontUSA
  3. 3.Physical and Life Sciences DirectorateLawrence Livermore National LaboratoryLivermoreUSA
  4. 4.Department of Physics and AstronomyUniversity of ManitobaWinnipegCanada
  5. 5.Soreq NRCYavneIsrael
  6. 6.Department of PhysicsUniversity of Notre DameNotre DameUSA
  7. 7.GSIHeidelberg UniversityHeidelbergGermany
  8. 8.Department of Physics and AstronomyLouisiana State UniversityBaton RougeUSA
  9. 9.Department of PhysicsMcGill UniversityMontréalCanada
  10. 10.Department of Physics and AstronomyNorthwestern UniversityEvanstonUSA

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