Study of the suppressed decays B - → [K +π -] DK - and B - → [K +π -] Dπ -

M. Saigo; K. Abe; H. Aihara; M. Akatsu; Y. Asano; V. Aulchenko; T. Aushev; S. Bahinipati; A. M. Bakich; Y. Ban; S. Banerjee; I. Bedny; U. Bitenc; I. Bizjak; S. Blyth; A. Bondar; A. Bozek; M. Bračko; J. Brodzicka; T. E. Browder; Y. Chao; A. Chen; K. F. Chen; W. T. Chen; B. G. Cheon; R. Chistov; S. K. Choi; Y. Choi; Y. K. Choi; A. Chuvikov; S. Cole; J. Dalseno; M. Danilov; M. Dash; L. Y. Dong; A. Drutskoy; S. Eidelman; V. Eiges; Y. Enari; S. Fratina; N. Gabyshev; A. Garmash; T. Gershon; G. Gokhroo; B. Golob; J. Haba; K. Hayasaka; H. Hayashii; M. Hazumi; T. Higuchi; L. Hinz; T. Hokuue; Y. Hoshi; S. Hou; W. S. Hou; Y. B. Hsiung; T. Iijima; A. Imoto; K. Inami; A. Ishikawa; R. Itoh; M. Iwasaki; Y. Iwasaki; J. H. Kang; J. S. Kang; P. Kapusta; N. Katayama; H. Kawai; T. Kawasaki; N. Kent; H. R. Khan; H. Kichimi; H. J. Kim; S. K. Kim; S. M. Kim; K. Kinoshita; P. Koppenburg; S. Korpar; P. Križan; P. Krokovny; R. Kulasiri; C. C. Kuo; A. Kuzmin; Y. J. Kwon; G. Leder; S. E. Lee; T. Lesiak; J. Li; S. W. Lin; D. Liventsev; J. MacNaughton; G. Majumder; F. Mandl; D. Marlow; T. Matsumoto; A. Matyja; Y. Mikami; W. Mitaroff; H. Miyake; R. Mizuk; D. Mohapatra; T. Mori; Y. Nagasaka; E. Nakano; M. Nakao; Z. Natkaniec; S. Nishida; O. Nitoh; S. Ogawa; T. Ohshima; T. Okabe; S. Okuno; S. L. Olsen; W. Ostrowicz; H. Ozaki; P. Pakhlov; H. Palka; H. Park; K. S. Park; N. Parslow; L. S. Peak; R. Pestotnik; L. E. Piilonen; A. Poluektov; F. J. Ronga; H. Sagawa; Y. Sakai; N. Sato; T. Schietinger; O. Schneider; P. Schönmeier; J. Schümann; A. J. Schwartz; S. Semenov; R. Seuster; M. E. Sevior; H. Shibuya; J. B. Singh; A. Somov; N. Soni; R. Stamen; S. Stanič; M. Starič; T. Sumiyoshi; S. Suzuki; S. Y. Suzuki; O. Tajima; F. Takasaki; K. Tamai; N. Tamura; M. Tanaka; Y. Teramoto; X. C. Tian; K. Trabelsi; T. Tsukamoto; S. Uehara; T. Uglov; S. Uno; Y. Ushiroda; G. Varner; K. E. Varvell; S. Villa; C. C. Wang; C. H. Wang; M. Z. Wang; M. Watanabe; Y. Watanabe; A. Yamaguchi; H. Yamamoto; Y. Yamashita; M. Yamauchi; Y. Yusa; L. M. Zhang; Z. P. Zhang; V. Zhilich; D. Žontar; D. Zürcher

doi:10.1103/PhysRevLett.94.091601

Study of the suppressed decays B ^- → [K ⁺π ^-] _DK ^- and B ^- → [K ⁺π ^-] _Dπ ^-

M. Saigo
, K. Abe
, H. Aihara
, M. Akatsu
, Y. Asano
, V. Aulchenko
, T. Aushev
, S. Bahinipati
, A. M. Bakich
, Y. Ban
, S. Banerjee
, I. Bedny
, U. Bitenc
, I. Bizjak
, S. Blyth
, A. Bondar
, A. Bozek
, M. Bračko
, J. Brodzicka
, T. E. Browder

Y. Chao, A. Chen, K. F. Chen, W. T. Chen, B. G. Cheon, R. Chistov, S. K. Choi, Y. Choi, Y. K. Choi, A. Chuvikov, S. Cole, J. Dalseno, M. Danilov, M. Dash, L. Y. Dong, A. Drutskoy, S. Eidelman, V. Eiges, Y. Enari, S. Fratina, N. Gabyshev, A. Garmash, T. Gershon, G. Gokhroo, B. Golob, J. Haba, K. Hayasaka, H. Hayashii, M. Hazumi, T. Higuchi, L. Hinz, T. Hokuue, Y. Hoshi, S. Hou, W. S. Hou, Y. B. Hsiung, T. Iijima, A. Imoto, K. Inami, A. Ishikawa, R. Itoh, M. Iwasaki, Y. Iwasaki, J. H. Kang, J. S. Kang, P. Kapusta, N. Katayama, H. Kawai, T. Kawasaki, N. Kent, H. R. Khan, H. Kichimi, H. J. Kim, S. K. Kim, S. M. Kim, K. Kinoshita, P. Koppenburg, S. Korpar, P. Križan, P. Krokovny, R. Kulasiri, C. C. Kuo, A. Kuzmin, Y. J. Kwon, G. Leder, S. E. Lee, T. Lesiak, J. Li, S. W. Lin, D. Liventsev, J. MacNaughton, G. Majumder, F. Mandl, D. Marlow, T. Matsumoto, A. Matyja, Y. Mikami, W. Mitaroff, H. Miyake, R. Mizuk, D. Mohapatra, T. Mori, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, S. Nishida, O. Nitoh, S. Ogawa, T. Ohshima, T. Okabe, S. Okuno, S. L. Olsen, W. Ostrowicz, H. Ozaki, P. Pakhlov, H. Palka, H. Park, K. S. Park, N. Parslow, L. S. Peak, R. Pestotnik, L. E. Piilonen, A. Poluektov, F. J. Ronga, H. Sagawa, Y. Sakai, N. Sato, T. Schietinger, O. Schneider, P. Schönmeier, J. Schümann, A. J. Schwartz, S. Semenov, R. Seuster, M. E. Sevior, H. Shibuya, J. B. Singh, A. Somov, N. Soni, R. Stamen, S. Stanič, M. Starič, T. Sumiyoshi, S. Suzuki, S. Y. Suzuki, O. Tajima, F. Takasaki, K. Tamai, N. Tamura, M. Tanaka, Y. Teramoto, X. C. Tian, K. Trabelsi, T. Tsukamoto, S. Uehara, T. Uglov, S. Uno, Y. Ushiroda, G. Varner, K. E. Varvell, S. Villa, C. C. Wang, C. H. Wang, M. Z. Wang, M. Watanabe, Y. Watanabe, A. Yamaguchi, H. Yamamoto, Y. Yamashita, M. Yamauchi, Y. Yusa, L. M. Zhang, Z. P. Zhang, V. Zhilich, D. Žontar, D. Zürcher

Tohoku University
High Energy Accelerator Research Organization, Tsukuba
Tohoku Gakuin University
The University of Tokyo
Nagoya University
University of Tsukuba
RAS - Budker Institute of Nuclear Physics
Alikhanov Institute for Theoretical and Experimental Physics
University of Cincinnati
The University of Sydney
Peking University
Tata Institute of Fundamental Research
Jožef Stefan Institute
National Taiwan University
H. Niewodniczanski Institute of Nuclear Physics
University of Maribor
University of Hawai'i at Mānoa
National Central University
Chonnam National University
Gyeongsang National University
Sungkyunkwan University
Princeton University
University of Melbourne
Virginia Polytechnic Institute and State University
CAS - Institute of High Energy Physics
University of Ljubljana
Nara Women's University
Swiss Federal Institute of Technology Lausanne
Yonsei University
Korea University
Chiba University
Niigata University
Institute of Science Tokyo
Seoul National University
Austrian Academy of Sciences
University of Science and Technology of China
Tokyo Metropolitan University
The University of Osaka
Hiroshima Institute of Technology
Osaka Metropolitan University
Tokyo University of Agriculture and Technology
Toho University
Kanagawa University
Kyungpook National University
Panjab University
Saga University
National United University Taiwan
Nihon Dental College

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

15 Scopus citations

Abstract

We report a study of the suppressed decays B ^- → [K ⁺π ^-] _DK ^- and B ^- → [K ⁺π ^-] _Dπ ^-, where [K ⁺π ^-] _D indicates that the K ⁺π ^- pair originates from a neutral D meson. These decay modes are sensitive to the unitarity triangle angle φ ₃. We use a data sample containing 275 × 10 ⁶ BB̄ pairs recorded at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e ⁺e ^- storage ring. The signal for B ^- → [K ⁺π ^-] _DK ^- is not statistically significant, and we set a limit r _B < 0.27 at 90% confidence level, where r _B is the magnitude of the ratio of amplitudes |A(B ^- → D̄ ⁰K ^-)/A(B ^- → D ⁰K ^-)|. We observe a signal with 6.4σ statistical significance in the related mode, B ^- → [K ⁺π ^-] _Dπ ^-.

Original language	English
Article number	091601
Journal	Physical Review Letters
Volume	94
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.94.091601
State	Published - 11 Mar 2005

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10.1103/PhysRevLett.94.091601

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Saigo, M., Abe, K., Aihara, H., Akatsu, M., Asano, Y., Aulchenko, V., Aushev, T., Bahinipati, S., Bakich, A. M., Ban, Y., Banerjee, S., Bedny, I., Bitenc, U., Bizjak, I., Blyth, S., Bondar, A., Bozek, A., Bračko, M., Brodzicka, J., ... Zürcher, D. (2005). Study of the suppressed decays B ^- → [K ⁺π ^-] _DK ^- and B ^- → [K ⁺π ^-] _Dπ ^- Physical Review Letters, 94(9), Article 091601. https://doi.org/10.1103/PhysRevLett.94.091601

@article{993ad2e8a166439ab001954a54ff2182,

title = "Study of the suppressed decays B - → [K +π -] DK - and B - → [K +π -] Dπ - ",

abstract = "We report a study of the suppressed decays B - → [K +π -] DK - and B - → [K +π -] Dπ -, where [K +π -] D indicates that the K +π - pair originates from a neutral D meson. These decay modes are sensitive to the unitarity triangle angle φ 3. We use a data sample containing 275 {\texttimes} 10 6 B{\=B} pairs recorded at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e +e - storage ring. The signal for B - → [K +π -] DK - is not statistically significant, and we set a limit r B < 0.27 at 90\% confidence level, where r B is the magnitude of the ratio of amplitudes |A(B - → {\=D} 0K -)/A(B - → D 0K -)|. We observe a signal with 6.4σ statistical significance in the related mode, B - → [K +π -] Dπ -.",

author = "M. Saigo and K. Abe and H. Aihara and M. Akatsu and Y. Asano and V. Aulchenko and T. Aushev and S. Bahinipati and Bakich, \{A. M.\} and Y. Ban and S. Banerjee and I. Bedny and U. Bitenc and I. Bizjak and S. Blyth and A. Bondar and A. Bozek and M. Bra{\v c}ko and J. Brodzicka and Browder, \{T. E.\} and Y. Chao and A. Chen and Chen, \{K. F.\} and Chen, \{W. T.\} and Cheon, \{B. G.\} and R. Chistov and Choi, \{S. K.\} and Y. Choi and Choi, \{Y. K.\} and A. Chuvikov and S. Cole and J. Dalseno and M. Danilov and M. Dash and Dong, \{L. Y.\} and A. Drutskoy and S. Eidelman and V. Eiges and Y. Enari and S. Fratina and N. Gabyshev and A. Garmash and T. Gershon and G. Gokhroo and B. Golob and J. Haba and K. Hayasaka and H. Hayashii and M. Hazumi and T. Higuchi and L. Hinz and T. Hokuue and Y. Hoshi and S. Hou and Hou, \{W. S.\} and Hsiung, \{Y. B.\} and T. Iijima and A. Imoto and K. Inami and A. Ishikawa and R. Itoh and M. Iwasaki and Y. Iwasaki and Kang, \{J. H.\} and Kang, \{J. S.\} and P. Kapusta and N. Katayama and H. Kawai and T. Kawasaki and N. Kent and Khan, \{H. R.\} and H. Kichimi and Kim, \{H. J.\} and Kim, \{S. K.\} and Kim, \{S. M.\} and K. Kinoshita and P. Koppenburg and S. Korpar and P. Kri{\v z}an and P. Krokovny and R. Kulasiri and Kuo, \{C. C.\} and A. Kuzmin and Kwon, \{Y. J.\} and G. Leder and Lee, \{S. E.\} and T. Lesiak and J. Li and Lin, \{S. W.\} and D. Liventsev and J. MacNaughton and G. Majumder and F. Mandl and D. Marlow and T. Matsumoto and A. Matyja and Y. Mikami and W. Mitaroff and H. Miyake and R. Mizuk and D. Mohapatra and T. Mori and Y. Nagasaka and E. Nakano and M. Nakao and Z. Natkaniec and S. Nishida and O. Nitoh and S. Ogawa and T. Ohshima and T. Okabe and S. Okuno and Olsen, \{S. L.\} and W. Ostrowicz and H. Ozaki and P. Pakhlov and H. Palka and H. Park and Park, \{K. S.\} and N. Parslow and Peak, \{L. S.\} and R. Pestotnik and Piilonen, \{L. E.\} and A. Poluektov and Ronga, \{F. J.\} and H. Sagawa and Y. Sakai and N. Sato and T. Schietinger and O. Schneider and P. Sch{\"o}nmeier and J. Sch{\"u}mann and Schwartz, \{A. J.\} and S. Semenov and R. Seuster and Sevior, \{M. E.\} and H. Shibuya and Singh, \{J. B.\} and A. Somov and N. Soni and R. Stamen and S. Stani{\v c} and M. Stari{\v c} and T. Sumiyoshi and S. Suzuki and Suzuki, \{S. Y.\} and O. Tajima and F. Takasaki and K. Tamai and N. Tamura and M. Tanaka and Y. Teramoto and Tian, \{X. C.\} and K. Trabelsi and T. Tsukamoto and S. Uehara and T. Uglov and S. Uno and Y. Ushiroda and G. Varner and Varvell, \{K. E.\} and S. Villa and Wang, \{C. C.\} and Wang, \{C. H.\} and Wang, \{M. Z.\} and M. Watanabe and Y. Watanabe and A. Yamaguchi and H. Yamamoto and Y. Yamashita and M. Yamauchi and Y. Yusa and Zhang, \{L. M.\} and Zhang, \{Z. P.\} and V. Zhilich and D. {\v Z}ontar and D. Z{\"u}rcher",

year = "2005",

month = mar,

day = "11",

doi = "10.1103/PhysRevLett.94.091601",

language = "English",

volume = "94",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "9",

}

Saigo, M, Abe, K, Aihara, H, Akatsu, M, Asano, Y, Aulchenko, V, Aushev, T, Bahinipati, S, Bakich, AM, Ban, Y, Banerjee, S, Bedny, I, Bitenc, U, Bizjak, I, Blyth, S, Bondar, A, Bozek, A, Bračko, M, Brodzicka, J, Browder, TE, Chao, Y, Chen, A, Chen, KF, Chen, WT, Cheon, BG, Chistov, R, Choi, SK, Choi, Y, Choi, YK, Chuvikov, A, Cole, S, Dalseno, J, Danilov, M, Dash, M, Dong, LY, Drutskoy, A, Eidelman, S, Eiges, V, Enari, Y, Fratina, S, Gabyshev, N, Garmash, A, Gershon, T, Gokhroo, G, Golob, B, Haba, J, Hayasaka, K, Hayashii, H, Hazumi, M, Higuchi, T, Hinz, L, Hokuue, T, Hoshi, Y, Hou, S, Hou, WS, Hsiung, YB, Iijima, T, Imoto, A, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Iwasaki, Y, Kang, JH, Kang, JS, Kapusta, P, Katayama, N, Kawai, H, Kawasaki, T, Kent, N, Khan, HR, Kichimi, H, Kim, HJ, Kim, SK, Kim, SM, Kinoshita, K, Koppenburg, P, Korpar, S, Križan, P, Krokovny, P, Kulasiri, R, Kuo, CC, Kuzmin, A, Kwon, YJ, Leder, G, Lee, SE, Lesiak, T, Li, J, Lin, SW, Liventsev, D, MacNaughton, J, Majumder, G, Mandl, F, Marlow, D, Matsumoto, T, Matyja, A, Mikami, Y, Mitaroff, W, Miyake, H, Mizuk, R, Mohapatra, D, Mori, T, Nagasaka, Y, Nakano, E, Nakao, M, Natkaniec, Z, Nishida, S, Nitoh, O, Ogawa, S, Ohshima, T, Okabe, T, Okuno, S, Olsen, SL, Ostrowicz, W, Ozaki, H, Pakhlov, P, Palka, H, Park, H, Park, KS, Parslow, N, Peak, LS, Pestotnik, R, Piilonen, LE, Poluektov, A, Ronga, FJ, Sagawa, H, Sakai, Y, Sato, N, Schietinger, T, Schneider, O, Schönmeier, P, Schümann, J, Schwartz, AJ, Semenov, S, Seuster, R, Sevior, ME, Shibuya, H, Singh, JB, Somov, A, Soni, N, Stamen, R, Stanič, S, Starič, M, Sumiyoshi, T, Suzuki, S, Suzuki, SY, Tajima, O, Takasaki, F, Tamai, K, Tamura, N, Tanaka, M, Teramoto, Y, Tian, XC, Trabelsi, K, Tsukamoto, T, Uehara, S, Uglov, T, Uno, S, Ushiroda, Y, Varner, G, Varvell, KE, Villa, S, Wang, CC, Wang, CH, Wang, MZ, Watanabe, M, Watanabe, Y, Yamaguchi, A, Yamamoto, H, Yamashita, Y, Yamauchi, M, Yusa, Y, Zhang, LM, Zhang, ZP, Zhilich, V, Žontar, D & Zürcher, D 2005, 'Study of the suppressed decays B ^- → [K ⁺π ^-] _DK ^- and B ^- → [K ⁺π ^-] _Dπ ^- ', Physical Review Letters, vol. 94, no. 9, 091601. https://doi.org/10.1103/PhysRevLett.94.091601

TY - JOUR

T1 - Study of the suppressed decays B - → [K +π -] DK - and B - → [K +π -] Dπ -

AU - Saigo, M.

AU - Abe, K.

AU - Aihara, H.

AU - Akatsu, M.

AU - Asano, Y.

AU - Aulchenko, V.

AU - Aushev, T.

AU - Bahinipati, S.

AU - Bakich, A. M.

AU - Ban, Y.

AU - Banerjee, S.

AU - Bedny, I.

AU - Bitenc, U.

AU - Bizjak, I.

AU - Blyth, S.

AU - Bondar, A.

AU - Bozek, A.

AU - Bračko, M.

AU - Brodzicka, J.

AU - Browder, T. E.

AU - Chao, Y.

AU - Chen, A.

AU - Chen, K. F.

AU - Chen, W. T.

AU - Cheon, B. G.

AU - Chistov, R.

AU - Choi, S. K.

AU - Choi, Y.

AU - Choi, Y. K.

AU - Chuvikov, A.

AU - Cole, S.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dash, M.

AU - Dong, L. Y.

AU - Drutskoy, A.

AU - Eidelman, S.

AU - Eiges, V.

AU - Enari, Y.

AU - Fratina, S.

AU - Gabyshev, N.

AU - Garmash, A.

AU - Gershon, T.

AU - Gokhroo, G.

AU - Golob, B.

AU - Haba, J.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hazumi, M.

AU - Higuchi, T.

AU - Hinz, L.

AU - Hokuue, T.

AU - Hoshi, Y.

AU - Hou, S.

AU - Hou, W. S.

AU - Hsiung, Y. B.

AU - Iijima, T.

AU - Imoto, A.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, M.

AU - Iwasaki, Y.

AU - Kang, J. H.

AU - Kang, J. S.

AU - Kapusta, P.

AU - Katayama, N.

AU - Kawai, H.

AU - Kawasaki, T.

AU - Kent, N.

AU - Khan, H. R.

AU - Kichimi, H.

AU - Kim, H. J.

AU - Kim, S. K.

AU - Kim, S. M.

AU - Kinoshita, K.

AU - Koppenburg, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kulasiri, R.

AU - Kuo, C. C.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Leder, G.

AU - Lee, S. E.

AU - Lesiak, T.

AU - Li, J.

AU - Lin, S. W.

AU - Liventsev, D.

AU - MacNaughton, J.

AU - Majumder, G.

AU - Mandl, F.

AU - Marlow, D.

AU - Matsumoto, T.

AU - Matyja, A.

AU - Mikami, Y.

AU - Mitaroff, W.

AU - Miyake, H.

AU - Mizuk, R.

AU - Mohapatra, D.

AU - Mori, T.

AU - Nagasaka, Y.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Ohshima, T.

AU - Okabe, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Ostrowicz, W.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Palka, H.

AU - Park, H.

AU - Park, K. S.

AU - Parslow, N.

AU - Peak, L. S.

AU - Pestotnik, R.

AU - Piilonen, L. E.

AU - Poluektov, A.

AU - Ronga, F. J.

AU - Sagawa, H.

AU - Sakai, Y.

AU - Sato, N.

AU - Schietinger, T.

AU - Schneider, O.

AU - Schönmeier, P.

AU - Schümann, J.

AU - Schwartz, A. J.

AU - Semenov, S.

AU - Seuster, R.

AU - Sevior, M. E.

AU - Shibuya, H.

AU - Singh, J. B.

AU - Somov, A.

AU - Soni, N.

AU - Stamen, R.

AU - Stanič, S.

AU - Starič, M.

AU - Sumiyoshi, T.

AU - Suzuki, S.

AU - Suzuki, S. Y.

AU - Tajima, O.

AU - Takasaki, F.

AU - Tamai, K.

AU - Tamura, N.

AU - Tanaka, M.

AU - Teramoto, Y.

AU - Tian, X. C.

AU - Trabelsi, K.

AU - Tsukamoto, T.

AU - Uehara, S.

AU - Uglov, T.

AU - Uno, S.

AU - Ushiroda, Y.

AU - Varner, G.

AU - Varvell, K. E.

AU - Villa, S.

AU - Wang, C. C.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Yamaguchi, A.

AU - Yamamoto, H.

AU - Yamashita, Y.

AU - Yamauchi, M.

AU - Yusa, Y.

AU - Zhang, L. M.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Žontar, D.

AU - Zürcher, D.

PY - 2005/3/11

Y1 - 2005/3/11

N2 - We report a study of the suppressed decays B - → [K +π -] DK - and B - → [K +π -] Dπ -, where [K +π -] D indicates that the K +π - pair originates from a neutral D meson. These decay modes are sensitive to the unitarity triangle angle φ 3. We use a data sample containing 275 × 10 6 BB̄ pairs recorded at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e +e - storage ring. The signal for B - → [K +π -] DK - is not statistically significant, and we set a limit r B < 0.27 at 90% confidence level, where r B is the magnitude of the ratio of amplitudes |A(B - → D̄ 0K -)/A(B - → D 0K -)|. We observe a signal with 6.4σ statistical significance in the related mode, B - → [K +π -] Dπ -.

AB - We report a study of the suppressed decays B - → [K +π -] DK - and B - → [K +π -] Dπ -, where [K +π -] D indicates that the K +π - pair originates from a neutral D meson. These decay modes are sensitive to the unitarity triangle angle φ 3. We use a data sample containing 275 × 10 6 BB̄ pairs recorded at the Y(4S) resonance with the Belle detector at the KEKB asymmetric e +e - storage ring. The signal for B - → [K +π -] DK - is not statistically significant, and we set a limit r B < 0.27 at 90% confidence level, where r B is the magnitude of the ratio of amplitudes |A(B - → D̄ 0K -)/A(B - → D 0K -)|. We observe a signal with 6.4σ statistical significance in the related mode, B - → [K +π -] Dπ -.

UR - https://www.scopus.com/pages/publications/18144374565

U2 - 10.1103/PhysRevLett.94.091601

DO - 10.1103/PhysRevLett.94.091601

M3 - Article

AN - SCOPUS:18144374565

SN - 0031-9007

VL - 94

JO - Physical Review Letters

JF - Physical Review Letters

IS - 9

M1 - 091601

ER -

Study of the suppressed decays B ^- → [K ⁺π ^-] _DK ^- and B ^- → [K ⁺π ^-] _Dπ ^-

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