Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0

O. Tajima, M. Hazumi, I. Adachi, H. Aihara, V. Aulchenko, T. Aushev, A. M. Bakich, E. Barberio, A. Bay, I. Bedny, V. Bhardwaj, U. Bitenc, A. Bozek, M. Bračko, T. E. Browder, M. C. Chang, P. Chang, A. Chen, K. F. Chen, W. T. Chen & 139 others B. G. Cheon, C. C. Chiang, R. Chistov, I. S. Cho, Y. Choi, Y. K. Choi, J. Dalseno, M. Danilov, M. Dash, A. Drutskoy, S. Eidelman, D. Epifanov, A. Go, G. Gokhroo, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, D. Heffernan, T. Hokuue, Y. Hoshi, W. S. Hou, Y. B. Hsiung, H. J. Hyun, T. Iijima, K. Ikado, K. Inami, A. Ishikawa, H. Ishino, R. Itoh, M. Iwasaki, Y. Iwasaki, N. J. Joshi, D. H. Kah, H. Kaji, J. H. Kang, S. U. Kataoka, H. Kawai, T. Kawasaki, H. Kichimi, H. J. Kim, H. O. Kim, S. K. Kim, Y. J. Kim, K. Kinoshita, S. Korpar, P. Krian, P. Krokovny, R. Kumar, C. C. Kuo, Y. J. Kwon, J. S. Lange, J. S. Lee, M. J. Lee, S. E. Lee, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, F. Mandl, D. Marlow, S. McOnie, T. Medvedeva, W. Mitaroff, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, D. Mohapatra, Y. Nagasaka, E. Nakano, M. Nakao, S. Nishida, O. Nitoh, S. Noguchi, T. Nozaki, S. Ogawa, T. Ohshima, S. Okuno, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. Park, R. Pestotnik, L. E. Piilonen, H. Sahoo, Y. Sakai, O. Schneider, A. Sekiya, K. Senyo, M. E. Sevior, M. Shapkin, C. P. Shen, H. Shibuya, J. G. Shiu, B. Shwartz, J. B. Singh, A. Sokolov, A. Somov, S. Stanič, M. Starič, K. Sumisawa, T. Sumiyoshi, F. Takasaki, M. Tanaka, G. N. Taylor, Y. Teramoto, K. Trabelsi, S. Uehara, K. Ueno, T. Uglov, Y. Unno, S. Uno, P. Urquijo, Y. Usov, G. Varner, K. E. Varvell, K. Vervink, S. Villa, A. Vinokurova, C. C. Wang, C. H. Wang, M. Z. Wang, P. Wang, Y. Watanabe, R. Wedd, Eunil Won, B. D. Yabsley, A. Yamaguchi, Y. Yamashita, M. Yamauchi, C. Z. Yuan, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We report the first search for CP-violating decays of the Υ(4S) using a data sample that contains 535×106 Υ(4S) mesons with the Belle detector at the KEKB asymmetric-energy e+e- collider. A partial reconstruction technique is employed to enhance the signal sensitivity. No significant signals were observed. We obtain an upper limit of 4×10-7 at the 90% confidence level for the branching fractions of the CP violating modes, Υ(4S)→B0B̄0→J/ψKS0+J/ψ(ηc)KS0. Extrapolating the result, we find that an observation with 5σ significance is expected with a 30ab-1 data sample, which is within the reach of a future super B factory.

Original languageEnglish
Article number211601
JournalPhysical Review Letters
Volume99
Issue number21
DOIs
Publication statusPublished - 2007 Nov 20

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Tajima, O., Hazumi, M., Adachi, I., Aihara, H., Aulchenko, V., Aushev, T., ... Zupanc, A. (2007). Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0. Physical Review Letters, 99(21), [211601]. https://doi.org/10.1103/PhysRevLett.99.211601

Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0. / Tajima, O.; Hazumi, M.; Adachi, I.; Aihara, H.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Barberio, E.; Bay, A.; Bedny, I.; Bhardwaj, V.; Bitenc, U.; Bozek, A.; Bračko, M.; Browder, T. E.; Chang, M. C.; Chang, P.; Chen, A.; Chen, K. F.; Chen, W. T.; Cheon, B. G.; Chiang, C. C.; Chistov, R.; Cho, I. S.; Choi, Y.; Choi, Y. K.; Dalseno, J.; Danilov, M.; Dash, M.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Go, A.; Gokhroo, G.; Golob, B.; Haba, J.; Hayasaka, K.; Hayashii, H.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hyun, H. J.; Iijima, T.; Ikado, K.; Inami, K.; Ishikawa, A.; Ishino, H.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Joshi, N. J.; Kah, D. H.; Kaji, H.; Kang, J. H.; Kataoka, S. U.; Kawai, H.; Kawasaki, T.; Kichimi, H.; Kim, H. J.; Kim, H. O.; Kim, S. K.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Krian, P.; Krokovny, P.; Kumar, R.; Kuo, C. C.; Kwon, Y. J.; Lange, J. S.; Lee, J. S.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Li, J.; Lin, S. W.; Liventsev, D.; Mandl, F.; Marlow, D.; McOnie, S.; Medvedeva, T.; Mitaroff, W.; Miyabayashi, K.; Miyake, H.; Miyata, H.; Mizuk, R.; Mohapatra, D.; Nagasaka, Y.; Nakano, E.; Nakao, M.; Nishida, S.; Nitoh, O.; Noguchi, S.; Nozaki, T.; Ogawa, S.; Ohshima, T.; Okuno, S.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, C. W.; Park, H.; Pestotnik, R.; Piilonen, L. E.; Sahoo, H.; Sakai, Y.; Schneider, O.; Sekiya, A.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shen, C. P.; Shibuya, H.; Shiu, J. G.; Shwartz, B.; Singh, J. B.; Sokolov, A.; Somov, A.; Stanič, S.; Starič, M.; Sumisawa, K.; Sumiyoshi, T.; Takasaki, F.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Trabelsi, K.; Uehara, S.; Ueno, K.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Vervink, K.; Villa, S.; Vinokurova, A.; Wang, C. C.; Wang, C. H.; Wang, M. Z.; Wang, P.; Watanabe, Y.; Wedd, R.; Won, Eunil; Yabsley, B. D.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Yuan, C. Z.; Yusa, Y.; Zhang, C. C.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

In: Physical Review Letters, Vol. 99, No. 21, 211601, 20.11.2007.

Research output: Contribution to journalArticle

Tajima, O, Hazumi, M, Adachi, I, Aihara, H, Aulchenko, V, Aushev, T, Bakich, AM, Barberio, E, Bay, A, Bedny, I, Bhardwaj, V, Bitenc, U, Bozek, A, Bračko, M, Browder, TE, Chang, MC, Chang, P, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chiang, CC, Chistov, R, Cho, IS, Choi, Y, Choi, YK, Dalseno, J, Danilov, M, Dash, M, Drutskoy, A, Eidelman, S, Epifanov, D, Go, A, Gokhroo, G, Golob, B, Haba, J, Hayasaka, K, Hayashii, H, Heffernan, D, Hokuue, T, Hoshi, Y, Hou, WS, Hsiung, YB, Hyun, HJ, Iijima, T, Ikado, K, Inami, K, Ishikawa, A, Ishino, H, Itoh, R, Iwasaki, M, Iwasaki, Y, Joshi, NJ, Kah, DH, Kaji, H, Kang, JH, Kataoka, SU, Kawai, H, Kawasaki, T, Kichimi, H, Kim, HJ, Kim, HO, Kim, SK, Kim, YJ, Kinoshita, K, Korpar, S, Krian, P, Krokovny, P, Kumar, R, Kuo, CC, Kwon, YJ, Lange, JS, Lee, JS, Lee, MJ, Lee, SE, Lesiak, T, Li, J, Lin, SW, Liventsev, D, Mandl, F, Marlow, D, McOnie, S, Medvedeva, T, Mitaroff, W, Miyabayashi, K, Miyake, H, Miyata, H, Mizuk, R, Mohapatra, D, Nagasaka, Y, Nakano, E, Nakao, M, Nishida, S, Nitoh, O, Noguchi, S, Nozaki, T, Ogawa, S, Ohshima, T, Okuno, S, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, H, Pestotnik, R, Piilonen, LE, Sahoo, H, Sakai, Y, Schneider, O, Sekiya, A, Senyo, K, Sevior, ME, Shapkin, M, Shen, CP, Shibuya, H, Shiu, JG, Shwartz, B, Singh, JB, Sokolov, A, Somov, A, Stanič, S, Starič, M, Sumisawa, K, Sumiyoshi, T, Takasaki, F, Tanaka, M, Taylor, GN, Teramoto, Y, Trabelsi, K, Uehara, S, Ueno, K, Uglov, T, Unno, Y, Uno, S, Urquijo, P, Usov, Y, Varner, G, Varvell, KE, Vervink, K, Villa, S, Vinokurova, A, Wang, CC, Wang, CH, Wang, MZ, Wang, P, Watanabe, Y, Wedd, R, Won, E, Yabsley, BD, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Yuan, CZ, Yusa, Y, Zhang, CC, Zhang, ZP, Zhilich, V, Zhulanov, V & Zupanc, A 2007, 'Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0', Physical Review Letters, vol. 99, no. 21, 211601. https://doi.org/10.1103/PhysRevLett.99.211601
Tajima O, Hazumi M, Adachi I, Aihara H, Aulchenko V, Aushev T et al. Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0. Physical Review Letters. 2007 Nov 20;99(21). 211601. https://doi.org/10.1103/PhysRevLett.99.211601
Tajima, O. ; Hazumi, M. ; Adachi, I. ; Aihara, H. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. M. ; Barberio, E. ; Bay, A. ; Bedny, I. ; Bhardwaj, V. ; Bitenc, U. ; Bozek, A. ; Bračko, M. ; Browder, T. E. ; Chang, M. C. ; Chang, P. ; Chen, A. ; Chen, K. F. ; Chen, W. T. ; Cheon, B. G. ; Chiang, C. C. ; Chistov, R. ; Cho, I. S. ; Choi, Y. ; Choi, Y. K. ; Dalseno, J. ; Danilov, M. ; Dash, M. ; Drutskoy, A. ; Eidelman, S. ; Epifanov, D. ; Go, A. ; Gokhroo, G. ; Golob, B. ; Haba, J. ; Hayasaka, K. ; Hayashii, H. ; Heffernan, D. ; Hokuue, T. ; Hoshi, Y. ; Hou, W. S. ; Hsiung, Y. B. ; Hyun, H. J. ; Iijima, T. ; Ikado, K. ; Inami, K. ; Ishikawa, A. ; Ishino, H. ; Itoh, R. ; Iwasaki, M. ; Iwasaki, Y. ; Joshi, N. J. ; Kah, D. H. ; Kaji, H. ; Kang, J. H. ; Kataoka, S. U. ; Kawai, H. ; Kawasaki, T. ; Kichimi, H. ; Kim, H. J. ; Kim, H. O. ; Kim, S. K. ; Kim, Y. J. ; Kinoshita, K. ; Korpar, S. ; Krian, P. ; Krokovny, P. ; Kumar, R. ; Kuo, C. C. ; Kwon, Y. J. ; Lange, J. S. ; Lee, J. S. ; Lee, M. J. ; Lee, S. E. ; Lesiak, T. ; Li, J. ; Lin, S. W. ; Liventsev, D. ; Mandl, F. ; Marlow, D. ; McOnie, S. ; Medvedeva, T. ; Mitaroff, W. ; Miyabayashi, K. ; Miyake, H. ; Miyata, H. ; Mizuk, R. ; Mohapatra, D. ; Nagasaka, Y. ; Nakano, E. ; Nakao, M. ; Nishida, S. ; Nitoh, O. ; Noguchi, S. ; Nozaki, T. ; Ogawa, S. ; Ohshima, T. ; Okuno, S. ; Ozaki, H. ; Pakhlov, P. ; Pakhlova, G. ; Park, C. W. ; Park, H. ; Pestotnik, R. ; Piilonen, L. E. ; Sahoo, H. ; Sakai, Y. ; Schneider, O. ; Sekiya, A. ; Senyo, K. ; Sevior, M. E. ; Shapkin, M. ; Shen, C. P. ; Shibuya, H. ; Shiu, J. G. ; Shwartz, B. ; Singh, J. B. ; Sokolov, A. ; Somov, A. ; Stanič, S. ; Starič, M. ; Sumisawa, K. ; Sumiyoshi, T. ; Takasaki, F. ; Tanaka, M. ; Taylor, G. N. ; Teramoto, Y. ; Trabelsi, K. ; Uehara, S. ; Ueno, K. ; Uglov, T. ; Unno, Y. ; Uno, S. ; Urquijo, P. ; Usov, Y. ; Varner, G. ; Varvell, K. E. ; Vervink, K. ; Villa, S. ; Vinokurova, A. ; Wang, C. C. ; Wang, C. H. ; Wang, M. Z. ; Wang, P. ; Watanabe, Y. ; Wedd, R. ; Won, Eunil ; Yabsley, B. D. ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Yuan, C. Z. ; Yusa, Y. ; Zhang, C. C. ; Zhang, Z. P. ; Zhilich, V. ; Zhulanov, V. ; Zupanc, A. / Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0. In: Physical Review Letters. 2007 ; Vol. 99, No. 21.
@article{1a66c4ae843246ba9330276de3c89b0d,
title = "Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0",
abstract = "We report the first search for CP-violating decays of the Υ(4S) using a data sample that contains 535×106 Υ(4S) mesons with the Belle detector at the KEKB asymmetric-energy e+e- collider. A partial reconstruction technique is employed to enhance the signal sensitivity. No significant signals were observed. We obtain an upper limit of 4×10-7 at the 90{\%} confidence level for the branching fractions of the CP violating modes, Υ(4S)→B0B̄0→J/ψKS0+J/ψ(ηc)KS0. Extrapolating the result, we find that an observation with 5σ significance is expected with a 30ab-1 data sample, which is within the reach of a future super B factory.",
author = "O. Tajima and M. Hazumi and I. Adachi and H. Aihara and V. Aulchenko and T. Aushev and Bakich, {A. M.} and E. Barberio and A. Bay and I. Bedny and V. Bhardwaj and U. Bitenc and A. Bozek and M. Bračko and Browder, {T. E.} and Chang, {M. C.} and P. Chang and A. Chen and Chen, {K. F.} and Chen, {W. T.} and Cheon, {B. G.} and Chiang, {C. C.} and R. Chistov and Cho, {I. S.} and Y. Choi and Choi, {Y. K.} and J. Dalseno and M. Danilov and M. Dash and A. Drutskoy and S. Eidelman and D. Epifanov and A. Go and G. Gokhroo and B. Golob and J. Haba and K. Hayasaka and H. Hayashii and D. Heffernan and T. Hokuue and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hyun, {H. J.} and T. Iijima and K. Ikado and K. Inami and A. Ishikawa and H. Ishino and R. Itoh and M. Iwasaki and Y. Iwasaki and Joshi, {N. J.} and Kah, {D. H.} and H. Kaji and Kang, {J. H.} and Kataoka, {S. U.} and H. Kawai and T. Kawasaki and H. Kichimi and Kim, {H. J.} and Kim, {H. O.} and Kim, {S. K.} and Kim, {Y. J.} and K. Kinoshita and S. Korpar and P. Krian and P. Krokovny and R. Kumar and Kuo, {C. C.} and Kwon, {Y. J.} and Lange, {J. S.} and Lee, {J. S.} and Lee, {M. J.} and Lee, {S. E.} and T. Lesiak and J. Li and Lin, {S. W.} and D. Liventsev and F. Mandl and D. Marlow and S. McOnie and T. Medvedeva and W. Mitaroff and K. Miyabayashi and H. Miyake and H. Miyata and R. Mizuk and D. Mohapatra and Y. Nagasaka and E. Nakano and M. Nakao and S. Nishida and O. Nitoh and S. Noguchi and T. Nozaki and S. Ogawa and T. Ohshima and S. Okuno and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, {C. W.} and H. Park and R. Pestotnik and Piilonen, {L. E.} and H. Sahoo and Y. Sakai and O. Schneider and A. Sekiya and K. Senyo and Sevior, {M. E.} and M. Shapkin and Shen, {C. P.} and H. Shibuya and Shiu, {J. G.} and B. Shwartz and Singh, {J. B.} and A. Sokolov and A. Somov and S. Stanič and M. Starič and K. Sumisawa and T. Sumiyoshi and F. Takasaki and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and K. Trabelsi and S. Uehara and K. Ueno and T. Uglov and Y. Unno and S. Uno and P. Urquijo and Y. Usov and G. Varner and Varvell, {K. E.} and K. Vervink and S. Villa and A. Vinokurova and Wang, {C. C.} and Wang, {C. H.} and Wang, {M. Z.} and P. Wang and Y. Watanabe and R. Wedd and Eunil Won and Yabsley, {B. D.} and A. Yamaguchi and Y. Yamashita and M. Yamauchi and Yuan, {C. Z.} and Y. Yusa and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and V. Zhulanov and A. Zupanc",
year = "2007",
month = "11",
day = "20",
doi = "10.1103/PhysRevLett.99.211601",
language = "English",
volume = "99",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

TY - JOUR

T1 - Search for the CP-violating decays Υ(4S)→B0B̄0→J/ ψKS0+J/ψ(ηc)KS0

AU - Tajima, O.

AU - Hazumi, M.

AU - Adachi, I.

AU - Aihara, H.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Barberio, E.

AU - Bay, A.

AU - Bedny, I.

AU - Bhardwaj, V.

AU - Bitenc, U.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chang, M. C.

AU - Chang, P.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chiang, C. C.

AU - Chistov, R.

AU - Cho, I. S.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Go, A.

AU - Gokhroo, G.

AU - Golob, B.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Heffernan, D.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Ikado, K.

AU - Inami, K.

AU - Ishikawa, A.

AU - Ishino, H.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Joshi, N. J.

AU - Kah, D. H.

AU - Kaji, H.

AU - Kang, J. H.

AU - Kataoka, S. U.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, H. O.

AU - Kim, S. K.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Krian, P.

AU - Krokovny, P.

AU - Kumar, R.

AU - Kuo, C. C.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Lee, J. S.

AU - Lee, M. J.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Li, J.

AU - Lin, S. W.

AU - Liventsev, D.

AU - Mandl, F.

AU - Marlow, D.

AU - McOnie, S.

AU - Medvedeva, T.

AU - Mitaroff, W.

AU - Miyabayashi, K.

AU - Miyake, H.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohapatra, D.

AU - Nagasaka, Y.

AU - Nakano, E.

AU - Nakao, M.

AU - Nishida, S.

AU - Nitoh, O.

AU - Noguchi, S.

AU - Nozaki, T.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okuno, S.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Sahoo, H.

AU - Sakai, Y.

AU - Schneider, O.

AU - Sekiya, A.

AU - Senyo, K.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shibuya, H.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Sokolov, A.

AU - Somov, A.

AU - Stanič, S.

AU - Starič, M.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Takasaki, F.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Uehara, S.

AU - Ueno, K.

AU - Uglov, T.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Usov, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vervink, K.

AU - Villa, S.

AU - Vinokurova, A.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, Y.

AU - Wedd, R.

AU - Won, Eunil

AU - Yabsley, B. D.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yuan, C. Z.

AU - Yusa, Y.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2007/11/20

Y1 - 2007/11/20

N2 - We report the first search for CP-violating decays of the Υ(4S) using a data sample that contains 535×106 Υ(4S) mesons with the Belle detector at the KEKB asymmetric-energy e+e- collider. A partial reconstruction technique is employed to enhance the signal sensitivity. No significant signals were observed. We obtain an upper limit of 4×10-7 at the 90% confidence level for the branching fractions of the CP violating modes, Υ(4S)→B0B̄0→J/ψKS0+J/ψ(ηc)KS0. Extrapolating the result, we find that an observation with 5σ significance is expected with a 30ab-1 data sample, which is within the reach of a future super B factory.

AB - We report the first search for CP-violating decays of the Υ(4S) using a data sample that contains 535×106 Υ(4S) mesons with the Belle detector at the KEKB asymmetric-energy e+e- collider. A partial reconstruction technique is employed to enhance the signal sensitivity. No significant signals were observed. We obtain an upper limit of 4×10-7 at the 90% confidence level for the branching fractions of the CP violating modes, Υ(4S)→B0B̄0→J/ψKS0+J/ψ(ηc)KS0. Extrapolating the result, we find that an observation with 5σ significance is expected with a 30ab-1 data sample, which is within the reach of a future super B factory.

UR - http://www.scopus.com/inward/record.url?scp=36248948119&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36248948119&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.99.211601

DO - 10.1103/PhysRevLett.99.211601

M3 - Article

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

M1 - 211601

ER -