1.
Phys Rev Lett
; 107(10): 102301, 2011 Sep 02.
Artigo
em Inglês
| MEDLINE
| ID: mdl-21981496
RESUMO
We report the results of an improved determination of the triple correlation DP·(p(e)×p(v)) that can be used to limit possible time-reversal invariance in the beta decay of polarized neutrons and constrain extensions to the standard model. Our result is D=[-0.96±1.89(stat)±1.01(sys)]×10(-4). The corresponding phase between gA and gV is ÏAV=180.013°±0.028° (68% confidence level). This result represents the most sensitive measurement of D in nuclear ß decay.