First test of Lorentz invariance in the weak decay of polarized nuclei
| Autor: | H. Bekker, C. J. G. Onderwater, Stefan E. Müller, A. Sytema, J. P. Noordmans, A. P. P. van der Poel, Klaus-Peter Jungmann, Steven Hoekstra, J. E. van den Berg, H. W. Wilschut, C. Meinema, Oscar Versolato, K. Yai, B. Santra, Lorenz Willmann, Oliver Böll, Elwin Dijck, M. Nuñez Portela, C. Pijpker, Robertus Timmermans |
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| Přispěvatelé: | Precision Frontier, High-Energy Frontier |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Physics
Nuclear and High Energy Physics 11.30.Cp [PACS numbers] Spins Field (physics) Nuclear Theory CPT symmetry FOS: Physical sciences Lorentz covariance Nuclear Theory (nucl-th) ROTATIONAL INVARIANCE Lorentz factor symbols.namesake High Energy Physics - Phenomenology Amplitude High Energy Physics - Phenomenology (hep-ph) Quantum electrodynamics symbols 23.40.Bw Rotational invariance Tensor 24.80.+y Nuclear Experiment (nucl-ex) Nuclear Experiment |
| Zdroj: | Physical Review D, 88(7). American Physical Society Physical Review D 88(2013)7, 071901 Physical Review D, 88(7):071901. AMER PHYSICAL SOC |
| ISSN: | 2470-0029 1550-7998 |
| DOI: | 10.1103/PhysRevD.88.071901 |
| Popis: | A new test of Lorentz invariance in the weak interactions has been made by searching for variations in the decay rate of spin-polarized 20Na nuclei. This test is unique to Gamow-Teller transitions, as was shown in the framework of a recently developed theory that assumes a Lorentz symmetry breaking background field of tensor nature. The nuclear spins were polarized in the up and down direction, putting a limit on the amplitude of sidereal variations of the form |(\Gamma_{up} - \Gamma_{down})| / (\Gamma_{up} + \Gamma_{down}) < 3 * 10^{-3}. This measurement shows a possible route toward a more detailed testing of Lorentz symmetry in weak interactions. Comment: 11 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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