Beta–neutrino correlation experiments on laser trapped 38mK, 37K
Gorelov, A. ; Behr, J.A. ; Melconian, D. ; Trinczek, M. ; Dubé, P. ; Häusser, O. ; Giesen, U. ; Jackson, K.P. ; Swanson, T. ; D'Auria, J.M. ; Dombsky, M. ; Ball, G. ; Buchmann, L. ; Jennings, B. ; Dilling, J. ; Schmid, J. ; Ashery, D. ; Deutsch, J. ; Alford, W.P. ; Asgeirsson, D. ; Wong, W. ; Lee, B.
Springer
Published 2000
Springer
Published 2000
| ISSN: |
1572-9540
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|---|---|
| Keywords: |
beta decay ; neutral atom trap ; shakeoff electron ; charge state
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract Laser trapping and cooling techniques are now being applied to the study of nuclear β-decay at several labs. A magneto-optical trap (MOT) provides a localized source of atoms suspended in space, so the low-energy recoiling nuclei can freely escape and be detected in coincidence with the β. This allows reconstruction of the neutrino momentum, and the deduction of the β-v correlation in a more direct fashion than previously possible. In addition, the nuclei can be polarized by atomic techniques, opening a new class of spin correlation measurements to test the degree to which parity is maximally violated in the weak interaction. Our present experiment has detected several hundred thousand recoil-β+ coincidences from the 0+ → 0+ pure Fermi decay of 38mK, produced at the on-line isotope separators TISOL and ISAC at TRIUMF. Our goal is to set constraints on non-Standard Model scalar bosons competitive with high-energy colliders and more conventional β-v correlation experiments.
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| Type of Medium: |
Electronic Resource
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| URL: |