Abstract
Time reversal invariance violation beyond the Standard model mechanism can be tested in free neutron beta decay. The triple correlation between neutron spin and the momenta of electron and antineutrino ( D coefficient) tests T violating phases in non-standard couplings. We present a new preliminary limit for this correlation which was obtained by the Trine experiment: D preliminary = (−3.1 ± 6.2 stat ± 4.7 syststat) · 10 −4.
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