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Abe K, Abe K, Abe R, et al. Observation of the decay B --> Kl+l-. Phys Rev Lett. 2001;88(2):021801doi: 10.1103/PhysRevLett.88.021801.
Abe, K., Abe, K., Abe, R., Adachi, I., Ahn, B. S., Aihara, H., Akatsu, M., Asano, Y., Aso, T., Aulchenko, V., Aushev, T., Bakich, A. M., Banas, E., Behari, S., Behera, P. K., Bondar, A., Bozek, A., Browder, T. E., Casey, B. C., Chang, P., Chao, Y., Cheon, B. G., Chistov, R., Choi, S. K., Choi, Y., Dong, L. Y., Drutskoy, A., Eidelman, S., Enari, Y., Fang, F., Fujii, H., Fukunaga, C., Fukushima, M., Gabyshev, N., Garmash, A., Gershon, T., Gordon, A., Gotow, K., Guo, R., Haba, J., Hamasaki, H., Hanagaki, K., Handa, F., Hara, K., Hara, T., Hastings, N. C., Hayashii, H., Hazumi, M., Heenan, E. M., Higuchi, I., Higuchi, T., Hirano, H., Hojo, T., Hokuue, T., Hoshi, Y., Hoshina, K., Hou, S. R., Hou, W. S., Hsu, S. C., Huang, H. C., Igarashi, Y., Iijima, T., Ikeda, H., Inami, K., Ishikawa, A., Ishino, H., Itoh, R., Iwasaki, H., Iwasaki, Y., Jackson, D. J., Jang, H. K., Kakuno, H., Kaneko, J., Kang, J. H., Kang, J. S., Kapusta, P., Katayama, N., Kawai, H., Kawai, H., Kawamura, N., Kawasaki, T., Kichimi, H., Kim, D. W., Kim, H., Kim, H. J., Kim, H. O., Kim, H., Kim, S. K., Kinoshita, K., Kobayashi, S., Konishi, H., Krokovny, P., Kulasiri, R., Kumar, S., Kuzmin, A., Kwon, Y. J., Lange, J. S., Leder, G., Lee, S. H., Liventsev, D., Lu, R. S., MacNaughton, J., Matsubara, T., Matsumoto, S., Matsumoto, T., Mikami, Y., Miyabayashi, K., Miyake, H., Miyata, H., Moloney, G. R., Moorhead, G. F., Mori, S., Mori, T., Murakami, A., Nagamine, T., Nagasaka, Y., Nagashima, Y., Nakadaira, T., Nakano, E., Nakao, M., Nam, J. W., Natkaniec, Z., Neichi, K., Nishida, S., Nitoh, O., Noguchi, S., Nozaki, T., Ogawa, S., Ohshima, T., Okabe, T., Okuno, S., Olsen, S. L., Ostrowicz, W., Ozaki, H., Pakhlov, P., Palka, H., Park, C. S., Park, C. W., Park, H., Park, K. S., Peak, L. S., Peters, M., Piilonen, L. E., Rodriguez, J. L., Root, N., Rozanska, M., Rybicki, K., Ryuko, J., Sagawa, H., Sakai, Y., Sakamoto, H., Satpathy, A., Schrenk, S., Semenov, S., Senyo, K., Sevior, M. E., Shibuya, H., Schwartz, B., Stanic, S., Sugi, A., Sugiyama, A., Sumisawa, K., Sumiyoshi, T., Suzuki, K., Suzuki, S., Suzuki, S. Y., Swain, S. K., Tajima, H., Takahashi, T., Takasaki, F., Takita, M., Tamai, K., Tamura, N., Tanaka, J., Tanaka, M., Tanaka, Y., Taylor, G. N., Teramoto, Y., Tomoto, M., Tomura, T., Tovey, S. N., Trabelsi, K., Tsuboyama, T., Tsukamoto, T., Uehara, S., Ueno, K., Unno, Y., Uno, S., Ushiroda, Y., Varvell, K. E., Wang, C. C., Wang, C. H., Wang, J. G., Wang, M. Z., Watanabe, Y., Won, E., Yabsley, B. D., Yamada, Y., Yamaga, M., Yamaguchi, A., Yamamoto, H., Yamashita, Y., Yamauchi, M., Yashima, J., Yokoyama, M., Yoshida, K., Yusa, Y., Yuta, H., Zhang, C. C., Zhang, J., Zhao, H. W., Zheng, Y., Zhilich, V., Zontar, D. (2002). Observation of the decay B --> Kl+l-. Physical review letters, 88(2), 021801. https://doi.org/10.1103/PhysRevLett.88.021801
Abe, K, et al. "Observation of the decay B --> Kl+l-." Physical review letters vol. 88,2 (2002): 021801. doi: https://doi.org/10.1103/PhysRevLett.88.021801
Abe K, Abe K, Abe R, Adachi I, Ahn BS, Aihara H, Akatsu M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich AM, Banas E, Behari S, Behera PK, Bondar A, Bozek A, Browder TE, Casey BC, Chang P, Chao Y, Cheon BG, Chistov R, Choi SK, Choi Y, Dong LY, Drutskoy A, Eidelman S, Enari Y, Fang F, Fujii H, Fukunaga C, Fukushima M, Gabyshev N, Garmash A, Gershon T, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Hanagaki K, Handa F, Hara K, Hara T, Hastings NC, Hayashii H, Hazumi M, Heenan EM, Higuchi I, Higuchi T, Hirano H, Hojo T, Hokuue T, Hoshi Y, Hoshina K, Hou SR, Hou WS, Hsu SC, Huang HC, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki Y, Jackson DJ, Jang HK, Kakuno H, Kaneko J, Kang JH, Kang JS, Kapusta P, Katayama N, Kawai H, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim DW, Kim H, Kim HJ, Kim HO, Kim H, Kim SK, Kinoshita K, Kobayashi S, Konishi H, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon YJ, Lange JS, Leder G, Lee SH, Liventsev D, Lu RS, MacNaughton J, Matsubara T, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney GR, Moorhead GF, Mori S, Mori T, Murakami A, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakano E, Nakao M, Nam JW, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohshima T, Okabe T, Okuno S, Olsen SL, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park CS, Park CW, Park H, Park KS, Peak LS, Peters M, Piilonen LE, Rodriguez JL, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satpathy A, Schrenk S, Semenov S, Senyo K, Sevior ME, Shibuya H, Schwartz B, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Suzuki SY, Swain SK, Tajima H, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Tanaka Y, Taylor GN, Teramoto Y, Tomoto M, Tomura T, Tovey SN, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Varvell KE, Wang CC, Wang CH, Wang JG, Wang MZ, Watanabe Y, Won E, Yabsley BD, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yashima J, Yokoyama M, Yoshida K, Yusa Y, Yuta H, Zhang CC, Zhang J, Zhao HW, Zheng Y, Zhilich V, Zontar D. Observation of the decay B --> Kl+l-. Phys Rev Lett. 2002 Jan 14;88(2):021801. doi: 10.1103/PhysRevLett.88.021801. Epub 2001 Dec 27. PMID: 11801003.
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Phys Rev Lett. 2002 Jan 14;88(2):021801. doi: 10.1103/PhysRevLett.88.021801. Epub 2001 Dec 27.

Observation of the decay B --> Kl+l-.

Physical review letters

K Abe, K Abe, R Abe, I Adachi, Byoung Sup Ahn, H Aihara, M Akatsu, Y Asano, T Aso, V Aulchenko, T Aushev, A M Bakich, E Banas, S Behari, P K Behera, A Bondar, A Bozek, T E Browder, B C K Casey, P Chang, Y Chao, B G Cheon, R Chistov, S-K Choi, Y Choi, L Y Dong, A Drutskoy, S Eidelman, Y Enari, F Fang, H Fujii, C Fukunaga, M Fukushima, N Gabyshev, A Garmash, T Gershon, A Gordon, K Gotow, R Guo, J Haba, H Hamasaki, K Hanagaki, F Handa, K Hara, T Hara, N C Hastings, H Hayashii, M Hazumi, E M Heenan, I Higuchi, T Higuchi, H Hirano, T Hojo, T Hokuue, Y Hoshi, K Hoshina, S R Hou, W-S Hou, S-C Hsu, H-C Huang, Y Igarashi, T Iijima, H Ikeda, K Inami, A Ishikawa, H Ishino, R Itoh, H Iwasaki, Y Iwasaki, D J Jackson, H K Jang, H Kakuno, J Kaneko, J H Kang, J S Kang, P Kapusta, N Katayama, H Kawai, H Kawai, N Kawamura, T Kawasaki, H Kichimi, D W Kim, Heejong Kim, H J Kim, H O Kim, Hyunwoo Kim, S K Kim, K Kinoshita, S Kobayashi, H Konishi, P Krokovny, R Kulasiri, S Kumar, A Kuzmin, Y-J Kwon, J S Lange, G Leder, S H Lee, D Liventsev, R-S Lu, J MacNaughton, T Matsubara, S Matsumoto, T Matsumoto, Y Mikami, K Miyabayashi, H Miyake, H Miyata, G R Moloney, G F Moorhead, S Mori, T Mori, A Murakami, T Nagamine, Y Nagasaka, Y Nagashima, T Nakadaira, E Nakano, M Nakao, J W Nam, Z Natkaniec, K Neichi, S Nishida, O Nitoh, S Noguchi, T Nozaki, S Ogawa, T Ohshima, T Okabe, S Okuno, S L Olsen, W Ostrowicz, H Ozaki, P Pakhlov, H Palka, C S Park, C W Park, H Park, K S Park, L S Peak, M Peters, L E Piilonen, J L Rodriguez, N Root, M Rozanska, K Rybicki, J Ryuko, H Sagawa, Y Sakai, H Sakamoto, A Satpathy, S Schrenk, S Semenov, K Senyo, M E Sevior, H Shibuya, B Schwartz, S Stanic, A Sugi, A Sugiyama, K Sumisawa, T Sumiyoshi, K Suzuki, S Suzuki, S Y Suzuki, S K Swain, H Tajima, T Takahashi, F Takasaki, M Takita, K Tamai, N Tamura, J Tanaka, M Tanaka, Y Tanaka, G N Taylor, Y Teramoto, M Tomoto, T Tomura, S N Tovey, K Trabelsi, T Tsuboyama, T Tsukamoto, S Uehara, K Ueno, Y Unno, S Uno, Y Ushiroda, K E Varvell, C C Wang, C H Wang, J G Wang, M-Z Wang, Y Watanabe, E Won, B D Yabsley, Y Yamada, M Yamaga, A Yamaguchi, H Yamamoto, Y Yamashita, M Yamauchi, J Yashima, M Yokoyama, K Yoshida, Y Yusa, H Yuta, C C Zhang, J Zhang, H W Zhao, Y Zheng, V Zhilich, D Zontar,

Affiliations

  1. High Energy Accelerator Research Organization (KEK), Tsukuba.

PMID: 11801003 DOI: 10.1103/PhysRevLett.88.021801

Abstract

We report a search for the flavor-changing neutral current decay B-->K(*)l+l- using a 29.1 fb(-1) data sample accumulated at the Upsilon(4S) resonance with the Belle detector at the KEKB e+e- storage ring. We observe the decay process B-->Kl+l-(l = e, mu), for the first time, with a branching fraction of B(B-->Kl+l-) = (0.75(+0.25)(-0.21)+/-0.09)x10(-6).

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