Go, A;
Bay, A;
Abe, K;
Aihara, H;
Anipko, D;
Aulchenko, V;
Aushev, T;
... Belle Collaboration; + view all
(2007)
Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Y(4S) -> B-0(B)over-bar0 decays.
PHYS REV LETT
, 99
(13)
, Article 131802. 10.1103/PhysRevLett.99.131802.
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Abstract
The neutral B meson pair produced at the Y(4S) should exhibit a nonlocal correlation of the type discussed by Einstein, Podolsky, and Rosen. We measure this correlation using the time-dependent flavor asymmetry of semileptonic B-0 decays, which we compare with predictions from quantum mechanics and two local realistic models. The data are consistent with quantum mechanics, and inconsistent with the other models. Assuming that some B pairs disentangle to produce B-0 and (B) over tilde (0) with definite flavor, we find a decoherent fraction of 0.029 +/- 0.057, consistent with no decoherence.
| Type: | Article |
|---|---|
| Title: | Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Y(4S) -> B-0(B)over-bar0 decays |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.131802 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.131802 |
| Language: | English |
| Additional information: | © 2007 The American Physical Society |
| Keywords: | PARTICLE PHYSICS, QUANTUM-MECHANICS, BELL INEQUALITY, EPR EXPERIMENT, B-MESONS, VIOLATION, NONSEPARABILITY, INTERFERENCE, PHOTONS, SYSTEM |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1308565 |
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