Search for time-reversal violation in the beta decay of polarized 8Li nuclei.
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.
Huber
R
R
Institut für Teilchenphysik, Eidgenössische Technische Hochschule, CH-8093 Zürich, Switzerland.
Lang
J
J
Navert
S
S
Sromicki
J
J
Bodek
K
K
Kistryn
St
S
Zejma
J
J
Naviliat-Cuncic
O
O
Stephan
E
E
Haeberli
W
W