Direct test of time reversal invariance violation in B mesons

EZEQUIEL ÁLVAREZ; ALEJANDRO SZYNKMAN

MODERN PHYSICS LETTERS A

WORLD SCIENTIFIC PUBL CO PTE LTD

Lugar: London, UK; Año: 2008 vol. 23 p. 2085 - 2091

0217-7323

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