Huber R, Lang J, Navert S, Sromicki J, Bodek K, Kistryn S, Zejma J, Naviliat-Cuncic O, Stephan E, Haeberli W. Search for time-reversal violation in the beta decay of polarized 8Li nuclei.
PHYSICAL REVIEW LETTERS 2003;
90:202301. [PMID:
12785884 DOI:
10.1103/physrevlett.90.202301]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2003] [Indexed: 05/24/2023]
Abstract
The transverse polarization of electrons emitted in the beta decay of polarized 8Li nuclei has been measured. For the time-reversal violating triple correlation parameter we find R=(0.9+/-2.2)x10(-3). This result is in agreement with the standard model and yields improved constraints on exotic tensor contributions to the weak interaction. Combined with other experimental results and using a model for the coupling constants, a new limit for the mass of a possible scalar leptoquark, m(LQ)>560 GeV/c(2) (90% C.L.), is obtained.
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