First test of Lorentz invariance in the weak decay of polarized nuclei

S. E. Müller, E. A. Dijck, H. Bekker, J. E. van den Berg, O. Böll, S. Hoekstra, K. Jungmann, C. Meinema, J. P. Noordmans, M. Nunez Portela, C. J. G. Onderwater, C. Pijpker, A. P. P. van der Poel, B. Santra, A. Sytema, R. G. E. Timmermans, O. O. Versolato, L. Willmann, H. W. Wilschut*, K. Yai

*Bijbehorende auteur voor dit werk

OnderzoeksoutputAcademicpeer review

20 Citaten (Scopus)


A new test of Lorentz invariance in the weak interactions has been made by searching for variations in the decay rate of spin-polarized Na-20 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 vertical bar(Gamma(up) - Gamma(down))vertical bar/(Gamma(up) + Gamma(down)) <3 x 10(-3). This measurement shows a possible route toward a more detailed testing of Lorentz symmetry in weak interactions.

Originele taal-2English
Aantal pagina's5
TijdschriftPhysical Review D
Nummer van het tijdschrift7
StatusPublished - 15-okt-2013

Citeer dit