@Article{BABARCollaborationLees_etal2012,
author="BABAR Collaboration (Lees, J. P. et al
and Bernabeu, J.
and Martinez-Vidal, F.
and Oyanguren, A.
and Villanueva-Perez, P.",
title="Observation of Time-Reversal Violation in the B-0 Meson System",
journal="Physical Review Letters",
year="2012",
publisher="Amer Physical Soc",
volume="109",
number="21",
pages="211801--8pp",
abstract="Although CP violation in the B meson system has been well established by the B factories, there has been no direct observation of time-reversal violation. The decays of entangled neutral B mesons into definite flavor states (B-0 or (B) over bar (0)), and J/psi K-L(0) or c (c) over barK(S)(0) final states (referred to as B+ or B-), allow comparisons between the probabilities of four pairs of T-conjugated transitions, for example, (B) over bar (0) -> B- and B- -> (B) over bar (0), as a function of the time difference between the two B decays. Using 468 X 10(6) B (B) over bar pairs produced in Y(4S) decays collected by the BABAR detector at SLAC, we measure T-violating parameters in the time evolution of neutral B mesons, yielding Delta S-T(+) = -137 +/- 0.14(stat) +/- 0.06(syst) and Delta S-T(-) = 1.17 +/- 0.18(stat) +/- 0.11(syst). These nonzero results represent the first direct observation of T violation through the exchange of initial and final states in transitions that can only be connected by a T-symmetry transformation.",
optnote="WOS:000311283800001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1220), last updated on Thu, 13 Dec 2012 13:56:39 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.109.211801",
opturl="http://arxiv.org/abs/1207.5832",
opturl="https://doi.org/10.1103/PhysRevLett.109.211801",
archivePrefix="arXiv",
eprint="1207.5832",
language="English"
}