Measurement of CP-violating parameters in B → η′ K decays

K. F. Chen, K. Hara, K. Abe, K. Abe, T. Abe, I. Adachi, S. A. Byoung, H. Aihara, M. Akatsu, Y. Asano, T. Aso, V. Aulchenko, T. Aushev, A. M. Bakich, Y. Ban, A. Bay, I. Bedny, P. K. Behera, I. Bizjak, A. BondarA. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, B. C K Casey, P. Chang, Y. Chao, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, Y. K. Choi, M. Danilov, L. Y. Dong, J. Dragic, S. Eidelman, V. Eiges, Y. Enari, F. Fang, C. Fukunaga, N. Gabyshev, A. Garmash, T. Gershon, B. Golob, A. Gordon, R. Guo, J. Haba, K. Hanagaki, F. Handa, T. Hara, N. C. Hastings, H. Hayashii, M. Hazumi, E. M. Heenan, I. Higuchi, T. Higuchi, L. Hinz, Y. Hoshi, W. S. Hou, Y. B. Hsiung, S. C. Hsu, H. C. Huang, T. Igaki, Y. Igarashi, T. Iijima, K. Inami, A. Ishikawa, R. Itoh, H. Iwasaki, Y. Iwasaki, H. K. Jang, J. H. Kang, J. S. Kang, N. Katayama, H. Kawai, Y. Kawakami, N. Kawamura, H. Kichimi, D. W. Kim, K. Heejong, H. J. Kim, K. Hyunwoo, T. H. Kim, K. Kinoshita, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, S. Kumar, A. Kuzmin, Y. J. Kwon, J. S. Lange, G. Leder, S. H. Lee, J. Li, R. S. Lu, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsuishi, S. Matsumoto, T. Matsumoto, K. Miyabayashi, Y. Miyabayashi, H. Miyata, G. R. Moloney, T. Mori, A. Murakami, T. Nagamine, Y. Nagasaka, T. Nakadaira, E. Nakano, M. Nakao, J. W. Nam, Z. Natkaniec, S. Nishida, O. Nitoh, S. Noguchi, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, Y. Onuki, W. Ostrowicz, H. Ozaki, H. Palka, C. W. Park, H. Park, L. S. Peak, J. P. Perroud, M. Peters, L. E. Piilonen, N. Root, M. Rozanska, K. Rybicki, H. Sagawa, S. Saitoh, Y. Sakai, H. Sakamoto, M. Satapathy, A. Satpathy, O. Schneider, S. Schrenk, C. Schwanda, S. Semenov, K. Senyo, R. Seuster, M. E. Sevior, H. Shibuya, B. Shwartz, J. B. Singh, N. Soni, S. Stanic, M. Starič, A. Sugi, A. Sugiyama, K. Sumisawa, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, T. Takahashi, F. Takasaki, N. Tamura, J. Tanaka, M. Tanaka, G. N. Taylor, Y. Teramoto, S. Tokuda, M. Tomoto, T. Tomura, K. Trabelsi, W. Trischuk, T. Tsuboyama, T. Tsukamoto, S. Uehara, K. Ueno, Y. Unno, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, C. C. Wang, C. H. Wang, J. G. Wang, M. Z. Wang, Y. Watanabe, Eunil Won, B. D. Yabsley, Y. Yamada, A. Yamaguchi, Y. Yamashita, M. Yamauchi, H. Yanai, P. Yeh, M. Yokoyama, Y. Yuan, Y. Yusa, Z. P. Zhang, V. Zhilich, D. Žontar

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

We present measurements of CP-violating parameters in B0(B0) → η′ KS 0 and B± → η′ K± decays based on a 41.8 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We fully reconstruct one neutral B meson as a B0(B0) → η′ KS 0 CP eigenstate and identify the flavor of the accompanying B from its decay products. From the distribution of proper time intervals between pairs of B meson decay points, we obtain the CP-violating asymmetry parameters Sη′ KS 0 = 0.28 ± 0.55(stat)-0.08 +0.07(syst), and Aη′ KS 0 = 0.13 ± 0.32(stat)-0.06 +0.09(syst). We also reconstruct charged B± → η′ K± decays and determine a direct-CP-violating asymmetry value of Aη′ K± = (-1.5 ± 7.0(stat) ± 0.9(syst))%.

Original languageEnglish
Pages (from-to)196-205
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume546
Issue number3-4
DOIs
Publication statusPublished - 2002 Oct 24

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decay
mesons
asymmetry
eigenvectors
intervals
detectors
products
energy

Keywords

  • B decays
  • CP violations

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Measurement of CP-violating parameters in B → η′ K decays. / Chen, K. F.; Hara, K.; Abe, K.; Abe, K.; Abe, T.; Adachi, I.; Byoung, S. A.; Aihara, H.; Akatsu, M.; Asano, Y.; Aso, T.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Ban, Y.; Bay, A.; Bedny, I.; Behera, P. K.; Bizjak, I.; Bondar, A.; Bozek, A.; Bračko, M.; Brodzicka, J.; Browder, T. E.; Casey, B. C K; Chang, P.; Chao, Y.; Cheon, B. G.; Chistov, R.; Choi, S. K.; Choi, Y.; Choi, Y. K.; Danilov, M.; Dong, L. Y.; Dragic, J.; Eidelman, S.; Eiges, V.; Enari, Y.; Fang, F.; Fukunaga, C.; Gabyshev, N.; Garmash, A.; Gershon, T.; Golob, B.; Gordon, A.; Guo, R.; Haba, J.; Hanagaki, K.; Handa, F.; Hara, T.; Hastings, N. C.; Hayashii, H.; Hazumi, M.; Heenan, E. M.; Higuchi, I.; Higuchi, T.; Hinz, L.; Hoshi, Y.; Hou, W. S.; Hsiung, Y. B.; Hsu, S. C.; Huang, H. C.; Igaki, T.; Igarashi, Y.; Iijima, T.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, H.; Iwasaki, Y.; Jang, H. K.; Kang, J. H.; Kang, J. S.; Katayama, N.; Kawai, H.; Kawakami, Y.; Kawamura, N.; Kichimi, H.; Kim, D. W.; Heejong, K.; Kim, H. J.; Hyunwoo, K.; Kim, T. H.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kulasiri, R.; Kumar, S.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Leder, G.; Lee, S. H.; Li, J.; Lu, R. S.; MacNaughton, J.; Majumder, G.; Mandl, F.; Marlow, D.; Matsuishi, T.; Matsumoto, S.; Matsumoto, T.; Miyabayashi, K.; Miyabayashi, Y.; Miyata, H.; Moloney, G. R.; Mori, T.; Murakami, A.; Nagamine, T.; Nagasaka, Y.; Nakadaira, T.; Nakano, E.; Nakao, M.; Nam, J. W.; Natkaniec, Z.; Nishida, S.; Nitoh, O.; Noguchi, S.; Ogawa, S.; Ohshima, T.; Okabe, T.; Okuno, S.; Olsen, S. L.; Onuki, Y.; Ostrowicz, W.; Ozaki, H.; Palka, H.; Park, C. W.; Park, H.; Peak, L. S.; Perroud, J. P.; Peters, M.; Piilonen, L. E.; Root, N.; Rozanska, M.; Rybicki, K.; Sagawa, H.; Saitoh, S.; Sakai, Y.; Sakamoto, H.; Satapathy, M.; Satpathy, A.; Schneider, O.; Schrenk, S.; Schwanda, C.; Semenov, S.; Senyo, K.; Seuster, R.; Sevior, M. E.; Shibuya, H.; Shwartz, B.; Singh, J. B.; Soni, N.; Stanic, S.; Starič, M.; Sugi, A.; Sugiyama, A.; Sumisawa, K.; Sumiyoshi, T.; Suzuki, S.; Suzuki, S. Y.; Takahashi, T.; Takasaki, F.; Tamura, N.; Tanaka, J.; Tanaka, M.; Taylor, G. N.; Teramoto, Y.; Tokuda, S.; Tomoto, M.; Tomura, T.; Trabelsi, K.; Trischuk, W.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Ueno, K.; Unno, Y.; Uno, S.; Ushiroda, Y.; Varner, G.; Varvell, K. E.; Wang, C. C.; Wang, C. H.; Wang, J. G.; Wang, M. Z.; Watanabe, Y.; Won, Eunil; Yabsley, B. D.; Yamada, Y.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Yanai, H.; Yeh, P.; Yokoyama, M.; Yuan, Y.; Yusa, Y.; Zhang, Z. P.; Zhilich, V.; Žontar, D.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 546, No. 3-4, 24.10.2002, p. 196-205.

Research output: Contribution to journalArticle

Chen, KF, Hara, K, Abe, K, Abe, K, Abe, T, Adachi, I, Byoung, SA, Aihara, H, Akatsu, M, Asano, Y, Aso, T, Aulchenko, V, Aushev, T, Bakich, AM, Ban, Y, Bay, A, Bedny, I, Behera, PK, Bizjak, I, Bondar, A, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Casey, BCK, Chang, P, Chao, Y, Cheon, BG, Chistov, R, Choi, SK, Choi, Y, Choi, YK, Danilov, M, Dong, LY, Dragic, J, Eidelman, S, Eiges, V, Enari, Y, Fang, F, Fukunaga, C, Gabyshev, N, Garmash, A, Gershon, T, Golob, B, Gordon, A, Guo, R, Haba, J, Hanagaki, K, Handa, F, Hara, T, Hastings, NC, Hayashii, H, Hazumi, M, Heenan, EM, Higuchi, I, Higuchi, T, Hinz, L, Hoshi, Y, Hou, WS, Hsiung, YB, Hsu, SC, Huang, HC, Igaki, T, Igarashi, Y, Iijima, T, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, H, Iwasaki, Y, Jang, HK, Kang, JH, Kang, JS, Katayama, N, Kawai, H, Kawakami, Y, Kawamura, N, Kichimi, H, Kim, DW, Heejong, K, Kim, HJ, Hyunwoo, K, Kim, TH, Kinoshita, K, Korpar, S, Križan, P, Krokovny, P, Kulasiri, R, Kumar, S, Kuzmin, A, Kwon, YJ, Lange, JS, Leder, G, Lee, SH, Li, J, Lu, RS, MacNaughton, J, Majumder, G, Mandl, F, Marlow, D, Matsuishi, T, Matsumoto, S, Matsumoto, T, Miyabayashi, K, Miyabayashi, Y, Miyata, H, Moloney, GR, Mori, T, Murakami, A, Nagamine, T, Nagasaka, Y, Nakadaira, T, Nakano, E, Nakao, M, Nam, JW, Natkaniec, Z, Nishida, S, Nitoh, O, Noguchi, S, Ogawa, S, Ohshima, T, Okabe, T, Okuno, S, Olsen, SL, Onuki, Y, Ostrowicz, W, Ozaki, H, Palka, H, Park, CW, Park, H, Peak, LS, Perroud, JP, Peters, M, Piilonen, LE, Root, N, Rozanska, M, Rybicki, K, Sagawa, H, Saitoh, S, Sakai, Y, Sakamoto, H, Satapathy, M, Satpathy, A, Schneider, O, Schrenk, S, Schwanda, C, Semenov, S, Senyo, K, Seuster, R, Sevior, ME, Shibuya, H, Shwartz, B, Singh, JB, Soni, N, Stanic, S, Starič, M, Sugi, A, Sugiyama, A, Sumisawa, K, Sumiyoshi, T, Suzuki, S, Suzuki, SY, Takahashi, T, Takasaki, F, Tamura, N, Tanaka, J, Tanaka, M, Taylor, GN, Teramoto, Y, Tokuda, S, Tomoto, M, Tomura, T, Trabelsi, K, Trischuk, W, Tsuboyama, T, Tsukamoto, T, Uehara, S, Ueno, K, Unno, Y, Uno, S, Ushiroda, Y, Varner, G, Varvell, KE, Wang, CC, Wang, CH, Wang, JG, Wang, MZ, Watanabe, Y, Won, E, Yabsley, BD, Yamada, Y, Yamaguchi, A, Yamashita, Y, Yamauchi, M, Yanai, H, Yeh, P, Yokoyama, M, Yuan, Y, Yusa, Y, Zhang, ZP, Zhilich, V & Žontar, D 2002, 'Measurement of CP-violating parameters in B → η′ K decays', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 546, no. 3-4, pp. 196-205. https://doi.org/10.1016/S0370-2693(02)02389-4
Chen, K. F. ; Hara, K. ; Abe, K. ; Abe, K. ; Abe, T. ; Adachi, I. ; Byoung, S. A. ; Aihara, H. ; Akatsu, M. ; Asano, Y. ; Aso, T. ; Aulchenko, V. ; Aushev, T. ; Bakich, A. M. ; Ban, Y. ; Bay, A. ; Bedny, I. ; Behera, P. K. ; Bizjak, I. ; Bondar, A. ; Bozek, A. ; Bračko, M. ; Brodzicka, J. ; Browder, T. E. ; Casey, B. C K ; Chang, P. ; Chao, Y. ; Cheon, B. G. ; Chistov, R. ; Choi, S. K. ; Choi, Y. ; Choi, Y. K. ; Danilov, M. ; Dong, L. Y. ; Dragic, J. ; Eidelman, S. ; Eiges, V. ; Enari, Y. ; Fang, F. ; Fukunaga, C. ; Gabyshev, N. ; Garmash, A. ; Gershon, T. ; Golob, B. ; Gordon, A. ; Guo, R. ; Haba, J. ; Hanagaki, K. ; Handa, F. ; Hara, T. ; Hastings, N. C. ; Hayashii, H. ; Hazumi, M. ; Heenan, E. M. ; Higuchi, I. ; Higuchi, T. ; Hinz, L. ; Hoshi, Y. ; Hou, W. S. ; Hsiung, Y. B. ; Hsu, S. C. ; Huang, H. C. ; Igaki, T. ; Igarashi, Y. ; Iijima, T. ; Inami, K. ; Ishikawa, A. ; Itoh, R. ; Iwasaki, H. ; Iwasaki, Y. ; Jang, H. K. ; Kang, J. H. ; Kang, J. S. ; Katayama, N. ; Kawai, H. ; Kawakami, Y. ; Kawamura, N. ; Kichimi, H. ; Kim, D. W. ; Heejong, K. ; Kim, H. J. ; Hyunwoo, K. ; Kim, T. H. ; Kinoshita, K. ; Korpar, S. ; Križan, P. ; Krokovny, P. ; Kulasiri, R. ; Kumar, S. ; Kuzmin, A. ; Kwon, Y. J. ; Lange, J. S. ; Leder, G. ; Lee, S. H. ; Li, J. ; Lu, R. S. ; MacNaughton, J. ; Majumder, G. ; Mandl, F. ; Marlow, D. ; Matsuishi, T. ; Matsumoto, S. ; Matsumoto, T. ; Miyabayashi, K. ; Miyabayashi, Y. ; Miyata, H. ; Moloney, G. R. ; Mori, T. ; Murakami, A. ; Nagamine, T. ; Nagasaka, Y. ; Nakadaira, T. ; Nakano, E. ; Nakao, M. ; Nam, J. W. ; Natkaniec, Z. ; Nishida, S. ; Nitoh, O. ; Noguchi, S. ; Ogawa, S. ; Ohshima, T. ; Okabe, T. ; Okuno, S. ; Olsen, S. L. ; Onuki, Y. ; Ostrowicz, W. ; Ozaki, H. ; Palka, H. ; Park, C. W. ; Park, H. ; Peak, L. S. ; Perroud, J. P. ; Peters, M. ; Piilonen, L. E. ; Root, N. ; Rozanska, M. ; Rybicki, K. ; Sagawa, H. ; Saitoh, S. ; Sakai, Y. ; Sakamoto, H. ; Satapathy, M. ; Satpathy, A. ; Schneider, O. ; Schrenk, S. ; Schwanda, C. ; Semenov, S. ; Senyo, K. ; Seuster, R. ; Sevior, M. E. ; Shibuya, H. ; Shwartz, B. ; Singh, J. B. ; Soni, N. ; Stanic, S. ; Starič, M. ; Sugi, A. ; Sugiyama, A. ; Sumisawa, K. ; Sumiyoshi, T. ; Suzuki, S. ; Suzuki, S. Y. ; Takahashi, T. ; Takasaki, F. ; Tamura, N. ; Tanaka, J. ; Tanaka, M. ; Taylor, G. N. ; Teramoto, Y. ; Tokuda, S. ; Tomoto, M. ; Tomura, T. ; Trabelsi, K. ; Trischuk, W. ; Tsuboyama, T. ; Tsukamoto, T. ; Uehara, S. ; Ueno, K. ; Unno, Y. ; Uno, S. ; Ushiroda, Y. ; Varner, G. ; Varvell, K. E. ; Wang, C. C. ; Wang, C. H. ; Wang, J. G. ; Wang, M. Z. ; Watanabe, Y. ; Won, Eunil ; Yabsley, B. D. ; Yamada, Y. ; Yamaguchi, A. ; Yamashita, Y. ; Yamauchi, M. ; Yanai, H. ; Yeh, P. ; Yokoyama, M. ; Yuan, Y. ; Yusa, Y. ; Zhang, Z. P. ; Zhilich, V. ; Žontar, D. / Measurement of CP-violating parameters in B → η′ K decays. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2002 ; Vol. 546, No. 3-4. pp. 196-205.
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title = "Measurement of CP-violating parameters in B → η′ K decays",
abstract = "We present measurements of CP-violating parameters in B0(B0) → η′ KS 0 and B± → η′ K± decays based on a 41.8 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We fully reconstruct one neutral B meson as a B0(B0) → η′ KS 0 CP eigenstate and identify the flavor of the accompanying B from its decay products. From the distribution of proper time intervals between pairs of B meson decay points, we obtain the CP-violating asymmetry parameters Sη′ KS 0 = 0.28 ± 0.55(stat)-0.08 +0.07(syst), and Aη′ KS 0 = 0.13 ± 0.32(stat)-0.06 +0.09(syst). We also reconstruct charged B± → η′ K± decays and determine a direct-CP-violating asymmetry value of Aη′ K± = (-1.5 ± 7.0(stat) ± 0.9(syst)){\%}.",
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author = "Chen, {K. F.} and K. Hara and K. Abe and K. Abe and T. Abe and I. Adachi and Byoung, {S. A.} and H. Aihara and M. Akatsu and Y. Asano and T. Aso and V. Aulchenko and T. Aushev and Bakich, {A. M.} and Y. Ban and A. Bay and I. Bedny and Behera, {P. K.} and I. Bizjak and A. Bondar and A. Bozek and M. Bračko and J. Brodzicka and Browder, {T. E.} and Casey, {B. C K} and P. Chang and Y. Chao and Cheon, {B. G.} and R. Chistov and Choi, {S. K.} and Y. Choi and Choi, {Y. K.} and M. Danilov and Dong, {L. Y.} and J. Dragic and S. Eidelman and V. Eiges and Y. Enari and F. Fang and C. Fukunaga and N. Gabyshev and A. Garmash and T. Gershon and B. Golob and A. Gordon and R. Guo and J. Haba and K. Hanagaki and F. Handa and T. Hara and Hastings, {N. C.} and H. Hayashii and M. Hazumi and Heenan, {E. M.} and I. Higuchi and T. Higuchi and L. Hinz and Y. Hoshi and Hou, {W. S.} and Hsiung, {Y. B.} and Hsu, {S. C.} and Huang, {H. C.} and T. Igaki and Y. Igarashi and T. Iijima and K. Inami and A. Ishikawa and R. Itoh and H. Iwasaki and Y. Iwasaki and Jang, {H. K.} and Kang, {J. H.} and Kang, {J. S.} and N. Katayama and H. Kawai and Y. Kawakami and N. Kawamura and H. Kichimi and Kim, {D. W.} and K. Heejong and Kim, {H. J.} and K. Hyunwoo and Kim, {T. H.} and K. Kinoshita and S. Korpar and P. Križan and P. Krokovny and R. Kulasiri and S. Kumar and A. Kuzmin and Kwon, {Y. J.} and Lange, {J. S.} and G. Leder and Lee, {S. H.} and J. Li and Lu, {R. S.} and J. MacNaughton and G. Majumder and F. Mandl and D. Marlow and T. Matsuishi and S. Matsumoto and T. Matsumoto and K. Miyabayashi and Y. Miyabayashi and H. Miyata and Moloney, {G. R.} and T. Mori and A. Murakami and T. Nagamine and Y. Nagasaka and T. Nakadaira and E. Nakano and M. Nakao and Nam, {J. W.} and Z. Natkaniec and S. Nishida and O. Nitoh and S. Noguchi and S. Ogawa and T. Ohshima and T. Okabe and S. Okuno and Olsen, {S. L.} and Y. Onuki and W. Ostrowicz and H. Ozaki and H. Palka and Park, {C. W.} and H. Park and Peak, {L. S.} and Perroud, {J. P.} and M. Peters and Piilonen, {L. E.} and N. Root and M. Rozanska and K. Rybicki and H. Sagawa and S. Saitoh and Y. Sakai and H. Sakamoto and M. Satapathy and A. Satpathy and O. Schneider and S. Schrenk and C. Schwanda and S. Semenov and K. Senyo and R. Seuster and Sevior, {M. E.} and H. Shibuya and B. Shwartz and Singh, {J. B.} and N. Soni and S. Stanic and M. Starič and A. Sugi and A. Sugiyama and K. Sumisawa and T. Sumiyoshi and S. Suzuki and Suzuki, {S. Y.} and T. Takahashi and F. Takasaki and N. Tamura and J. Tanaka and M. Tanaka and Taylor, {G. N.} and Y. Teramoto and S. Tokuda and M. Tomoto and T. Tomura and K. Trabelsi and W. Trischuk and T. Tsuboyama and T. Tsukamoto and S. Uehara and K. Ueno and Y. Unno and S. Uno and Y. Ushiroda and G. Varner and Varvell, {K. E.} and Wang, {C. C.} and Wang, {C. H.} and Wang, {J. G.} and Wang, {M. Z.} and Y. Watanabe and Eunil Won and Yabsley, {B. D.} and Y. Yamada and A. Yamaguchi and Y. Yamashita and M. Yamauchi and H. Yanai and P. Yeh and M. Yokoyama and Y. Yuan and Y. Yusa and Zhang, {Z. P.} and V. Zhilich and D. Žontar",
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TY - JOUR

T1 - Measurement of CP-violating parameters in B → η′ K decays

AU - Chen, K. F.

AU - Hara, K.

AU - Abe, K.

AU - Abe, K.

AU - Abe, T.

AU - Adachi, I.

AU - Byoung, S. A.

AU - Aihara, H.

AU - Akatsu, M.

AU - Asano, Y.

AU - Aso, T.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bakich, A. M.

AU - Ban, Y.

AU - Bay, A.

AU - Bedny, I.

AU - Behera, P. K.

AU - Bizjak, I.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Casey, B. C K

AU - Chang, P.

AU - Chao, Y.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Danilov, M.

AU - Dong, L. Y.

AU - Dragic, J.

AU - Eidelman, S.

AU - Eiges, V.

AU - Enari, Y.

AU - Fang, F.

AU - Fukunaga, C.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Gershon, T.

AU - Golob, B.

AU - Gordon, A.

AU - Guo, R.

AU - Haba, J.

AU - Hanagaki, K.

AU - Handa, F.

AU - Hara, T.

AU - Hastings, N. C.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Heenan, E. M.

AU - Higuchi, I.

AU - Higuchi, T.

AU - Hinz, L.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Hsu, S. C.

AU - Huang, H. C.

AU - Igaki, T.

AU - Igarashi, Y.

AU - Iijima, T.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, H.

AU - Iwasaki, Y.

AU - Jang, H. K.

AU - Kang, J. H.

AU - Kang, J. S.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawakami, Y.

AU - Kawamura, N.

AU - Kichimi, H.

AU - Kim, D. W.

AU - Heejong, K.

AU - Kim, H. J.

AU - Hyunwoo, K.

AU - Kim, T. H.

AU - Kinoshita, K.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kumar, S.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Leder, G.

AU - Lee, S. H.

AU - Li, J.

AU - Lu, R. S.

AU - MacNaughton, J.

AU - Majumder, G.

AU - Mandl, F.

AU - Marlow, D.

AU - Matsuishi, T.

AU - Matsumoto, S.

AU - Matsumoto, T.

AU - Miyabayashi, K.

AU - Miyabayashi, Y.

AU - Miyata, H.

AU - Moloney, G. R.

AU - Mori, T.

AU - Murakami, A.

AU - Nagamine, T.

AU - Nagasaka, Y.

AU - Nakadaira, T.

AU - Nakano, E.

AU - Nakao, M.

AU - Nam, J. W.

AU - Natkaniec, Z.

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AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Žontar, D.

PY - 2002/10/24

Y1 - 2002/10/24

N2 - We present measurements of CP-violating parameters in B0(B0) → η′ KS 0 and B± → η′ K± decays based on a 41.8 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We fully reconstruct one neutral B meson as a B0(B0) → η′ KS 0 CP eigenstate and identify the flavor of the accompanying B from its decay products. From the distribution of proper time intervals between pairs of B meson decay points, we obtain the CP-violating asymmetry parameters Sη′ KS 0 = 0.28 ± 0.55(stat)-0.08 +0.07(syst), and Aη′ KS 0 = 0.13 ± 0.32(stat)-0.06 +0.09(syst). We also reconstruct charged B± → η′ K± decays and determine a direct-CP-violating asymmetry value of Aη′ K± = (-1.5 ± 7.0(stat) ± 0.9(syst))%.

AB - We present measurements of CP-violating parameters in B0(B0) → η′ KS 0 and B± → η′ K± decays based on a 41.8 fb-1 data sample collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. We fully reconstruct one neutral B meson as a B0(B0) → η′ KS 0 CP eigenstate and identify the flavor of the accompanying B from its decay products. From the distribution of proper time intervals between pairs of B meson decay points, we obtain the CP-violating asymmetry parameters Sη′ KS 0 = 0.28 ± 0.55(stat)-0.08 +0.07(syst), and Aη′ KS 0 = 0.13 ± 0.32(stat)-0.06 +0.09(syst). We also reconstruct charged B± → η′ K± decays and determine a direct-CP-violating asymmetry value of Aη′ K± = (-1.5 ± 7.0(stat) ± 0.9(syst))%.

KW - B decays

KW - CP violations

UR - http://www.scopus.com/inward/record.url?scp=0037167799&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037167799&partnerID=8YFLogxK

U2 - 10.1016/S0370-2693(02)02389-4

DO - 10.1016/S0370-2693(02)02389-4

M3 - Article

AN - SCOPUS:0037167799

VL - 546

SP - 196

EP - 205

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 3-4

ER -