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. Bondar; A. 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; E. 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

doi:10.1016/S0370-2693(02)02389-4

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, E. 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

Department of Physics

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

We present measurements of CP-violating parameters in B⁰(B⁰) → η′ K_S⁰ 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′ K_S⁰ 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 S_η′ K_S⁰ = 0.28 ± 0.55(stat)_-0.08^+0.07(syst), and A_η′ K_S⁰ = 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 A_η′ K^± = (-1.5 ± 7.0(stat) ± 0.9(syst))%.

Original language	English
Pages (from-to)	196-205
Number of pages	10
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	546
Issue number	3-4
DOIs	https://doi.org/10.1016/S0370-2693(02)02389-4
Publication status	Published - 2002 Oct 24

Keywords

B decays
CP violations

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/S0370-2693(02)02389-4

Cite this

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., ... Žontar, D. (2002). Measurement of CP-violating parameters in B → η′ K decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 546(3-4), 196-205. https://doi.org/10.1016/S0370-2693(02)02389-4

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

@article{f3f448357b1542baa28bbaddd7f23e31,

title = "Measurement of CP-violating parameters in B → η′ K decays",

abstract = "We present measurements of CP-violating parameters in B0(B0) → η′ KS0 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′ KS0 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′ KS0 = 0.28 ± 0.55(stat)-0.08+0.07(syst), and Aη′ KS0 = 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))%.",

keywords = "B decays, CP violations",

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. Bra{\v c}ko 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. Kri{\v z}an 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. Stari{\v c} 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 E. 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. {\v Z}ontar",

note = "Funding Information: We wish to thank the KEKB accelerator group for the excellent operation of the KEKB accelerator. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Industry, Science and Resources; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 17017; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.",

year = "2002",

month = oct,

day = "24",

doi = "10.1016/S0370-2693(02)02389-4",

language = "English",

volume = "546",

pages = "196--205",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

number = "3-4",

}

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, 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.

AU - Nishida, S.

AU - Nitoh, O.

AU - Noguchi, S.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okabe, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Onuki, Y.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Palka, H.

AU - Park, C. W.

AU - Park, H.

AU - Peak, L. S.

AU - Perroud, J. P.

AU - Peters, M.

AU - Piilonen, L. E.

AU - Root, N.

AU - Rozanska, M.

AU - Rybicki, K.

AU - Sagawa, H.

AU - Saitoh, S.

AU - Sakai, Y.

AU - Sakamoto, H.

AU - Satapathy, M.

AU - Satpathy, A.

AU - Schneider, O.

AU - Schrenk, S.

AU - Schwanda, C.

AU - Semenov, S.

AU - Senyo, K.

AU - Seuster, R.

AU - Sevior, M. E.

AU - Shibuya, H.

AU - Shwartz, B.

AU - Singh, J. B.

AU - Soni, N.

AU - Stanic, S.

AU - Starič, M.

AU - Sugi, A.

AU - Sugiyama, A.

AU - Sumisawa, K.

AU - Sumiyoshi, T.

AU - Suzuki, S.

AU - Suzuki, S. Y.

AU - Takahashi, T.

AU - Takasaki, F.

AU - Tamura, N.

AU - Tanaka, J.

AU - Tanaka, M.

AU - Taylor, G. N.

AU - Teramoto, Y.

AU - Tokuda, S.

AU - Tomoto, M.

AU - Tomura, T.

AU - Trabelsi, K.

AU - Trischuk, W.

AU - Tsuboyama, T.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Ueno, K.

AU - Unno, Y.

AU - Uno, S.

AU - Ushiroda, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, J. G.

AU - Wang, M. Z.

AU - Watanabe, Y.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamada, Y.

AU - Yamaguchi, A.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yanai, H.

AU - Yeh, P.

AU - Yokoyama, M.

AU - Yuan, Y.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Žontar, D.

N1 - Funding Information: We wish to thank the KEKB accelerator group for the excellent operation of the KEKB accelerator. We acknowledge support from the Ministry of Education, Culture, Sports, Science, and Technology of Japan and the Japan Society for the Promotion of Science; the Australian Research Council and the Australian Department of Industry, Science and Resources; the National Science Foundation of China under contract No. 10175071; the Department of Science and Technology of India; the BK21 program of the Ministry of Education of Korea and the CHEP SRC program of the Korea Science and Engineering Foundation; the Polish State Committee for Scientific Research under contract No. 2P03B 17017; the Ministry of Science and Technology of the Russian Federation; the Ministry of Education, Science and Sport of the Republic of Slovenia; the National Science Council and the Ministry of Education of Taiwan; and the US Department of Energy.

PY - 2002/10/24

Y1 - 2002/10/24

N2 - We present measurements of CP-violating parameters in B0(B0) → η′ KS0 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′ KS0 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′ KS0 = 0.28 ± 0.55(stat)-0.08+0.07(syst), and Aη′ KS0 = 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′ KS0 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′ KS0 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′ KS0 = 0.28 ± 0.55(stat)-0.08+0.07(syst), and Aη′ KS0 = 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

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

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

M3 - Article

AN - SCOPUS:0037167799

SN - 0370-2693

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

IS - 3-4

ER -

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

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