Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays

A. Go, A. Bay, K. Abe, H. Aihara, D. Anipko, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, K. Belous, U. Bitenc, I. Bizjak, S. Blyth, A. Bozek, M. Bračko, T. E. Browder, P. Chang, Y. Chao, A. Chen, K. F. Chen & 139 others W. T. Chen, B. G. Cheon, R. Chistov, Y. Choi, Y. K. Choi, S. Cole, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, S. Fratina, N. Gabyshev, T. Gershon, G. Gokhroo, B. Golob, A. Gorišek, H. Ha, N. C. Hastings, K. Hayasaka, H. Hayashii, M. Hazumi, D. Heffernan, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, T. Iijima, K. Ikado, A. Imoto, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, C. Jacoby, J. H. Kang, N. Katayama, T. Kawasaki, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, R. Kumar, C. C. Kuo, A. Kuzmin, Y. J. Kwon, J. S. Lange, J. Lee, M. J. Lee, T. Lesiak, A. Limosani, S. W. Lin, Y. Liu, D. Liventsev, T. Matsumoto, A. Matyja, S. McOnie, W. Mitaroff, H. Miyake, H. Miyata, Y. Miyazaki, R. Mizuk, T. Mori, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, S. L. Olsen, Y. Onuki, P. Pakhlov, G. Pakhlova, H. Palka, C. W. Park, H. Park, L. S. Peak, R. Pestotnik, M. Peters, L. E. Piilonen, H. Sahoo, Y. Sakai, N. Satoyama, T. Schietinger, O. Schneider, J. Schümann, A. J. Schwartz, R. Seidl, K. Senyo, M. Shapkin, H. Shibuya, B. Shwartz, J. B. Singh, A. Somov, N. Soni, S. Stanič, M. Starič, H. Stoeck, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, X. C. Tian, I. Tikhomirov, K. Trabelsi, T. Tsuboyama, T. Tsukamoto, S. Uehara, T. Uglov, K. Ueno, Y. Unno, S. Uno, G. Varner, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, Y. Watanabe, J. Wicht, Eunil Won, Q. L. Xie, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, Z. P. Zhang, V. Zhilich, A. Zupanc

Research output: Contribution to journal › Article

51 Citations (Scopus)

Abstract

The neutral B meson pair produced at the Υ(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 B0 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 B0 and B̄0 with definite flavor, we find a decoherent fraction of 0.029±0.057, consistent with no decoherence.

Original languageEnglish
Article number131802
JournalPhysical Review Letters
Volume99
Issue number13
DOIs
Publication statusPublished - 2007 Sep 26

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quantum mechanics
decay
mesons
asymmetry
predictions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Go, A., Bay, A., Abe, K., Aihara, H., Anipko, D., Aulchenko, V., ... Zupanc, A. (2007). Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays. Physical Review Letters, 99(13), [131802]. https://doi.org/10.1103/PhysRevLett.99.131802

Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays. / Go, A.; Bay, A.; Abe, K.; Aihara, H.; Anipko, D.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Barberio, E.; Belous, K.; Bitenc, U.; Bizjak, I.; Blyth, S.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, P.; Chao, Y.; Chen, A.; Chen, K. F.; Chen, W. T.; Cheon, B. G.; Chistov, R.; Choi, Y.; Choi, Y. K.; Cole, S.; Dalseno, J.; Danilov, M.; Dash, M.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Fratina, S.; Gabyshev, N.; Gershon, T.; Gokhroo, G.; Golob, B.; Gorišek, A.; Ha, H.; Hastings, N. C.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W. S.; Iijima, T.; Ikado, K.; Imoto, A.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacoby, C.; Kang, J. H.; Katayama, N.; Kawasaki, T.; Khan, H. R.; Kichimi, H.; Kim, H. J.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kulasiri, R.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Lee, J.; Lee, M. J.; Lesiak, T.; Limosani, A.; Lin, S. W.; Liu, Y.; Liventsev, D.; Matsumoto, T.; Matyja, A.; McOnie, S.; Mitaroff, W.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Mori, T.; Nakano, E.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Olsen, S. L.; Onuki, Y.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, C. W.; Park, H.; Peak, L. S.; Pestotnik, R.; Peters, M.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Satoyama, N.; Schietinger, T.; Schneider, O.; Schümann, J.; Schwartz, A. J.; Seidl, R.; Senyo, K.; Shapkin, M.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Somov, A.; Soni, N.; Stanič, S.; Starič, M.; Stoeck, H.; Sumiyoshi, T.; Takasaki, F.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tian, X. C.; Tikhomirov, I.; Trabelsi, K.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Uglov, T.; Ueno, K.; Unno, Y.; Uno, S.; Varner, G.; Villa, S.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Watanabe, Y.; Wicht, J.; Won, Eunil; Xie, Q. L.; Yabsley, B. D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

In: Physical Review Letters, Vol. 99, No. 13, 131802, 26.09.2007.

Research output: Contribution to journal › Article

Go, A, Bay, A, Abe, K, Aihara, H, Anipko, D, Aulchenko, V, Aushev, T, Bakich, AM, Barberio, E, Belous, K, Bitenc, U, Bizjak, I, Blyth, S, Bozek, A, Bračko, M, Browder, TE, Chang, P, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chistov, R, Choi, Y, Choi, YK, Cole, S, Dalseno, J, Danilov, M, Dash, M, Drutskoy, A, Eidelman, S, Epifanov, D, Fratina, S, Gabyshev, N, Gershon, T, Gokhroo, G, Golob, B, Gorišek, A, Ha, H, Hastings, NC, Hayasaka, K, Hayashii, H, Hazumi, M, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Iijima, T, Ikado, K, Imoto, A, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Jacoby, C, Kang, JH, Katayama, N, Kawasaki, T, Khan, HR, Kichimi, H, Kim, HJ, Kim, SK, Kim, YJ, Kinoshita, K, Korpar, S, Križan, P, Krokovny, P, Kulasiri, R, Kumar, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Lange, JS, Lee, J, Lee, MJ, Lesiak, T, Limosani, A, Lin, SW, Liu, Y, Liventsev, D, Matsumoto, T, Matyja, A, McOnie, S, Mitaroff, W, Miyake, H, Miyata, H, Miyazaki, Y, Mizuk, R, Mori, T, Nakano, E, Nakao, M, Natkaniec, Z, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Olsen, SL, Onuki, Y, Pakhlov, P, Pakhlova, G, Palka, H, Park, CW, Park, H, Peak, LS, Pestotnik, R, Peters, M, Piilonen, LE, Sahoo, H, Sakai, Y, Satoyama, N, Schietinger, T, Schneider, O, Schümann, J, Schwartz, AJ, Seidl, R, Senyo, K, Shapkin, M, Shibuya, H, Shwartz, B, Singh, JB, Somov, A, Soni, N, Stanič, S, Starič, M, Stoeck, H, Sumiyoshi, T, Takasaki, F, Tanaka, M, Taylor, GN, Teramoto, Y, Tian, XC, Tikhomirov, I, Trabelsi, K, Tsuboyama, T, Tsukamoto, T, Uehara, S, Uglov, T, Ueno, K, Unno, Y, Uno, S, Varner, G, Villa, S, Wang, CC, Wang, CH, Wang, MZ, Watanabe, Y, Wicht, J, Won, E, Xie, QL, Yabsley, BD, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Zhang, ZP, Zhilich, V & Zupanc, A 2007, 'Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays', Physical Review Letters, vol. 99, no. 13, 131802. https://doi.org/10.1103/PhysRevLett.99.131802
Go A, Bay A, Abe K, Aihara H, Anipko D, Aulchenko V et al. Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays. Physical Review Letters. 2007 Sep 26;99(13). 131802. https://doi.org/10.1103/PhysRevLett.99.131802
Go, A. ; Bay, A. ; Abe, K. ; Aihara, H. ; Anipko, D. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. M. ; Barberio, E. ; Belous, K. ; Bitenc, U. ; Bizjak, I. ; Blyth, S. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chang, P. ; Chao, Y. ; Chen, A. ; Chen, K. F. ; Chen, W. T. ; Cheon, B. G. ; Chistov, R. ; Choi, Y. ; Choi, Y. K. ; Cole, S. ; Dalseno, J. ; Danilov, M. ; Dash, M. ; Drutskoy, A. ; Eidelman, S. ; Epifanov, D. ; Fratina, S. ; Gabyshev, N. ; Gershon, T. ; Gokhroo, G. ; Golob, B. ; Gorišek, A. ; Ha, H. ; Hastings, N. C. ; Hayasaka, K. ; Hayashii, H. ; Hazumi, M. ; Heffernan, D. ; Hokuue, T. ; Hoshi, Y. ; Hou, S. ; Hou, W. S. ; Iijima, T. ; Ikado, K. ; Imoto, A. ; Inami, K. ; Ishikawa, A. ; Ishino, H. ; Itoh, R. ; Iwasaki, M. ; Iwasaki, Y. ; Jacoby, C. ; Kang, J. H. ; Katayama, N. ; Kawasaki, T. ; Khan, H. R. ; Kichimi, H. ; Kim, H. J. ; Kim, S. K. ; Kim, Y. J. ; Kinoshita, K. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kulasiri, R. ; Kumar, R. ; Kuo, C. C. ; Kuzmin, A. ; Kwon, Y. J. ; Lange, J. S. ; Lee, J. ; Lee, M. J. ; Lesiak, T. ; Limosani, A. ; Lin, S. W. ; Liu, Y. ; Liventsev, D. ; Matsumoto, T. ; Matyja, A. ; McOnie, S. ; Mitaroff, W. ; Miyake, H. ; Miyata, H. ; Miyazaki, Y. ; Mizuk, R. ; Mori, T. ; Nakano, E. ; Nakao, M. ; Natkaniec, Z. ; Nishida, S. ; Nitoh, O. ; Ogawa, S. ; Ohshima, T. ; Olsen, S. L. ; Onuki, Y. ; Pakhlov, P. ; Pakhlova, G. ; Palka, H. ; Park, C. W. ; Park, H. ; Peak, L. S. ; Pestotnik, R. ; Peters, M. ; Piilonen, L. E. ; Sahoo, H. ; Sakai, Y. ; Satoyama, N. ; Schietinger, T. ; Schneider, O. ; Schümann, J. ; Schwartz, A. J. ; Seidl, R. ; Senyo, K. ; Shapkin, M. ; Shibuya, H. ; Shwartz, B. ; Singh, J. B. ; Somov, A. ; Soni, N. ; Stanič, S. ; Starič, M. ; Stoeck, H. ; Sumiyoshi, T. ; Takasaki, F. ; Tanaka, M. ; Taylor, G. N. ; Teramoto, Y. ; Tian, X. C. ; Tikhomirov, I. ; Trabelsi, K. ; Tsuboyama, T. ; Tsukamoto, T. ; Uehara, S. ; Uglov, T. ; Ueno, K. ; Unno, Y. ; Uno, S. ; Varner, G. ; Villa, S. ; Wang, C. C. ; Wang, C. H. ; Wang, M. Z. ; Watanabe, Y. ; Wicht, J. ; Won, Eunil ; Xie, Q. L. ; Yabsley, B. D. ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Zhang, Z. P. ; Zhilich, V. ; Zupanc, A. / Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays. In: Physical Review Letters. 2007 ; Vol. 99, No. 13.
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title = "Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays",
abstract = "The neutral B meson pair produced at the Υ(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 B0 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 B0 and B̄0 with definite flavor, we find a decoherent fraction of 0.029±0.057, consistent with no decoherence.",
author = "A. Go and A. Bay and K. Abe and H. Aihara and D. Anipko and V. Aulchenko and T. Aushev and Bakich, {A. M.} and E. Barberio and K. Belous and U. Bitenc and I. Bizjak and S. Blyth and A. Bozek and M. Bračko and Browder, {T. E.} and P. Chang and Y. Chao and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and R. Chistov and Y. Choi and Choi, {Y. K.} and S. Cole and J. Dalseno and M. Danilov and M. Dash and A. Drutskoy and S. Eidelman and D. Epifanov and S. Fratina and N. Gabyshev and T. Gershon and G. Gokhroo and B. Golob and A. Gorišek and H. Ha and Hastings, {N. C.} and K. Hayasaka and H. Hayashii and M. Hazumi and D. Heffernan and T. Hokuue and Y. Hoshi and S. Hou and Hou, {W. S.} and T. Iijima and K. Ikado and A. Imoto and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and C. Jacoby and Kang, {J. H.} and N. Katayama and T. Kawasaki and Khan, {H. R.} and H. Kichimi and Kim, {H. J.} and Kim, {S. K.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Križan and P. Krokovny and R. Kulasiri and R. Kumar and Kuo, {C. C.} and A. Kuzmin and Kwon, {Y. J.} and Lange, {J. S.} and J. Lee and Lee, {M. J.} and T. Lesiak and A. Limosani and Lin, {S. W.} and Y. Liu and D. Liventsev and T. Matsumoto and A. Matyja and S. McOnie and W. Mitaroff and H. Miyake and H. Miyata and Y. Miyazaki and R. Mizuk and T. Mori and E. Nakano and M. Nakao and Z. Natkaniec and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and Olsen, {S. L.} and Y. Onuki and P. Pakhlov and G. Pakhlova and H. Palka and Park, {C. W.} and H. Park and Peak, {L. S.} and R. Pestotnik and M. Peters and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and N. Satoyama and T. Schietinger and O. Schneider and J. Sch{\"u}mann and Schwartz, {A. J.} and R. Seidl and K. Senyo and M. Shapkin and H. Shibuya and B. Shwartz and Singh, {J. B.} and A. Somov and N. Soni and S. Stanič and M. Starič and H. Stoeck and T. Sumiyoshi and F. Takasaki and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and Tian, {X. C.} and I. Tikhomirov and K. Trabelsi and T. Tsuboyama and T. Tsukamoto and S. Uehara and T. Uglov and K. Ueno and Y. Unno and S. Uno and G. Varner and S. Villa and Wang, {C. C.} and Wang, {C. H.} and Wang, {M. Z.} and Y. Watanabe and J. Wicht and Eunil Won and Xie, {Q. L.} and Yabsley, {B. D.} and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Zhang, {Z. P.} and V. Zhilich and A. Zupanc",
year = "2007",
month = "9",
day = "26",
doi = "10.1103/PhysRevLett.99.131802",
language = "English",
volume = "99",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
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TY - JOUR

T1 - Measurement of Einstein-Podolsky-Rosen-type flavor entanglement in Υ(4S)→B0B̄0 decays

AU - Go, A.

AU - Bay, A.

AU - Abe, K.

AU - Aihara, H.

AU - Anipko, D.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Belous, K.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Blyth, S.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, P.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Cole, S.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Gershon, T.

AU - Gokhroo, G.

AU - Golob, B.

AU - Gorišek, A.

AU - Ha, H.

AU - Hastings, N. C.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Iijima, T.

AU - Ikado, K.

AU - Imoto, A.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Jacoby, C.

AU - Kang, J. H.

AU - Katayama, N.

AU - Kawasaki, T.

AU - Khan, H. R.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, S. K.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kumar, R.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Lee, J.

AU - Lee, M. J.

AU - Lesiak, T.

AU - Limosani, A.

AU - Lin, S. W.

AU - Liu, Y.

AU - Liventsev, D.

AU - Matsumoto, T.

AU - Matyja, A.

AU - McOnie, S.

AU - Mitaroff, W.

AU - Miyake, H.

AU - Miyata, H.

AU - Miyazaki, Y.

AU - Mizuk, R.

AU - Mori, T.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Olsen, S. L.

AU - Onuki, Y.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Peters, M.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Satoyama, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schümann, J.

AU - Schwartz, A. J.

AU - Seidl, R.

AU - Senyo, K.

AU - Shapkin, M.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Somov, A.

AU - Soni, N.

AU - Stanič, S.

AU - Starič, M.

AU - Stoeck, H.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Tikhomirov, I.

AU - Trabelsi, K.

AU - Tsuboyama, T.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Uglov, T.

AU - Ueno, K.

AU - Unno, Y.

AU - Uno, S.

AU - Varner, G.

AU - Villa, S.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Watanabe, Y.

AU - Wicht, J.

AU - Won, Eunil

AU - Xie, Q. L.

AU - Yabsley, B. D.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2007/9/26

Y1 - 2007/9/26

N2 - The neutral B meson pair produced at the Υ(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 B0 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 B0 and B̄0 with definite flavor, we find a decoherent fraction of 0.029±0.057, consistent with no decoherence.

AB - The neutral B meson pair produced at the Υ(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 B0 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 B0 and B̄0 with definite flavor, we find a decoherent fraction of 0.029±0.057, consistent with no decoherence.

UR - http://www.scopus.com/inward/record.url?scp=34848855110&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34848855110&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.99.131802

DO - 10.1103/PhysRevLett.99.131802

M3 - Article

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 13

M1 - 131802

ER -

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