scholarly journals Time reversal invariance - a test in free neutron decay

1999 ◽  
Author(s):  
Laura Jean Lising
Keyword(s):  
Time Reversal ◽  
Neutron Decay ◽  
Time Reversal Invariance ◽  
Free Neutron ◽  
Reversal Invariance

TESTS OF SYMMETRIES WITH NUCLEI

2011 ◽  
Vol 26 (03n04) ◽  
pp. 487-492
Author(s):  
OSCAR NAVILIAT-CUNCIC
Keyword(s):  
Beta Decay ◽  
Parity Violation ◽  
Time Reversal ◽  
Discrete Symmetries ◽  
Neutron Decay ◽  
Time Reversal Invariance ◽  
Nuclear Beta Decay ◽  
Reversal Invariance ◽  
The Status ◽  
Ongoing Project

I review here the status of tests of discrete symmetries in nuclear beta decay, including neutron decay. The focus is given on tests of maximal parity violation, tests of time reversal invariance as well as searches for parity and time reversal invariant exotic interactions. Along with the most sensitive results, I present also some recent achievements of precision beta decay experiments as well as selected ongoing project.

scholarly journals emiT: An apparatus to test time reversal invariance in polarized neutron decay

2004 ◽  
Vol 75 (12) ◽  
pp. 5343-5355 ◽  
Author(s):  
H. P. Mumm ◽  
A. Garcia ◽  
L. Grout ◽  
M. Howe ◽  
L. P. Parazzoli ◽  
...  
Keyword(s):  
Time Reversal ◽  
Neutron Decay ◽  
Test Time ◽  
Time Reversal Invariance ◽  
Reversal Invariance ◽  
Polarized Neutron

scholarly journals DIRECT TEST OF TIME REVERSAL INVARIANCE VIOLATION IN B-MESONS

2008 ◽  
Vol 23 (25) ◽  
pp. 2085-2091 ◽  
Author(s):  
EZEQUIEL ÁLVAREZ ◽  
ALEJANDRO SZYNKMAN
Keyword(s):  
B Mesons ◽  
Time Reversal ◽  
B Meson ◽  
Experimental Information ◽  
Time Reversal Invariance ◽  
Cpt Invariance ◽  
Invariance Violation ◽  
Mean Lifetime ◽  
Reversal Invariance ◽  
Model Independent

In this letter we reinterpret and reanalyze the available data of the B-meson factories showing the existence of direct experimental evidence of time reversal invariance violation in B-mesons. This reinterpretation consists of using the available observables to define a new observable which, in a model-independent way and without assuming CPT invariance, compares a transition between a B0 and a here-defined Bα-state, with its time reversed transition. The observable then offers a direct way to probe time reversal invariance and it is therefore independent of any conclusion obtained from current experimental information on CP violation and CPT invariance. As far as we are concerned, this is the first direct evidence of time reversal invariance violation in B-mesons and also the first one obtained from decaying particles whose mean lifetime difference is negligible.

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