Evidence for B-→τ-ν̄τ with a hadronic tagging method using the full data sample of belle

K. Hara; Y. Horii; T. Iijima; I. Adachi; H. Aihara; D. M. Asner; T. Aushev; T. Aziz; A. M. Bakich; M. Barrett; V. Bhardwaj; B. Bhuyan; A. Bondar; G. Bonvicini; A. Bozek; M. Bračko; T. E. Browder; V. Chekelian; A. Chen; P. Chen; B. G. Cheon; K. Chilikin; I. S. Cho; K. Cho; Y. Choi; D. Cinabro; J. Dalseno; J. Dingfelder; Z. Doležal; Z. Drásal; A. Drutskoy; D. Dutta; S. Eidelman; D. Epifanov; S. Esen; H. Farhat; A. Frey; V. Gaur; N. Gabyshev; S. Ganguly; R. Gillard; Y. M. Goh; B. Golob; J. Haba; T. Hara; K. Hayasaka; H. Hayashii; T. Higuchi; Y. Hoshi; K. Inami; A. Ishikawa; R. Itoh; Y. Iwasaki; T. Iwashita; T. Julius; J. H. Kang; T. Kawasaki; C. Kiesling; H. O. Kim; J. B. Kim; J. H. Kim; K. T. Kim; M. J. Kim; Y. J. Kim; K. Kinoshita; J. Klucar; B. R. Ko; P. Kodyš; S. Korpar; R. T. Kouzes; P. Križan; P. Krokovny; B. Kronenbitter; T. Kuhr; T. Kumita; A. Kuzmin; Y. J. Kwon; J. S. Lange; S. H. Lee; J. Li; Y. Li; J. Libby; C. Liu; Y. Liu; Z. Q. Liu; D. Liventsev; D. Matvienko; K. Miyabayashi; H. Miyata; R. Mizuk; G. B. Mohanty; A. Moll; T. Mori; N. Muramatsu; E. Nakano; M. Nakao; H. Nakazawa; Z. Natkaniec; M. Nayak; C. Ng; N. K. Nisar; S. Nishida; K. Nishimura; O. Nitoh; T. Nozaki; T. Ohshima; S. Okuno; S. L. Olsen; C. Oswald; H. Ozaki; P. Pakhlov; G. Pakhlova; C. W. Park; H. K. Park; T. K. Pedlar; R. Pestotnik; M. Petrič; L. E. Piilonen; M. Prim; M. Röhrken; S. Ryu; H. Sahoo; K. Sakai; Y. Sakai; S. Sandilya; D. Santel; T. Sanuki; Y. Sato; O. Schneider; G. Schnell; C. Schwanda; A. J. Schwartz; K. Senyo; O. Seon; M. E. Sevior; M. Shapkin; C. P. Shen; T. A. Shibata; J. G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; P. Smerkol; Y. S. Sohn; A. Sokolov; E. Solovieva; M. Starič; M. Sumihama; T. Sumiyoshi; G. Tatishvili; Y. Teramoto; K. Trabelsi; T. Tsuboyama; M. Uchida; S. Uehara; Y. Unno; S. Uno; P. Urquijo; Y. Ushiroda; Y. Usov; C. Van Hulse; P. Vanhoefer; G. Varner; K. E. Varvell; V. Vorobyev; M. N. Wagner; C. H. Wang; M. Z. Wang; P. Wang; M. Watanabe; Y. Watanabe; K. M. Williams; E. Won; B. D. Yabsley; H. Yamamoto; Y. Yamashita; Y. Yusa; Z. P. Zhang; V. Zhilich; V. Zhulanov; A. Zupanc

doi:10.1103/PhysRevLett.110.131801

Evidence for B-→τ-ν_̄τ with a hadronic tagging method using the full data sample of belle

K. Hara
, Y. Horii
, T. Iijima
, I. Adachi
, H. Aihara
, D. M. Asner
, T. Aushev
, T. Aziz
, A. M. Bakich
, M. Barrett
, V. Bhardwaj
, B. Bhuyan
, A. Bondar
, G. Bonvicini
, A. Bozek
, M. Bračko
, T. E. Browder
, V. Chekelian
, A. Chen
, P. Chen

B. G. Cheon, K. Chilikin, I. S. Cho, K. Cho, Y. Choi, D. Cinabro, J. Dalseno, J. Dingfelder, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, H. Farhat, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, T. Higuchi, Y. Hoshi, K. Inami, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Iwashita, T. Julius, J. H. Kang, T. Kawasaki, C. Kiesling, H. O. Kim, J. B. Kim, J. H. Kim, K. T. Kim, M. J. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, R. T. Kouzes, P. Križan, P. Krokovny, B. Kronenbitter, T. Kuhr, T. Kumita, A. Kuzmin, Y. J. Kwon, J. S. Lange, S. H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, D. Matvienko, K. Miyabayashi, H. Miyata, R. Mizuk, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, E. Nakano, M. Nakao, H. Nakazawa, Z. Natkaniec, M. Nayak, C. Ng, N. K. Nisar, S. Nishida, K. Nishimura, O. Nitoh, T. Nozaki, T. Ohshima, S. Okuno, S. L. Olsen, C. Oswald, H. Ozaki, P. Pakhlov, G. Pakhlova, C. W. Park, H. K. Park, T. K. Pedlar, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Prim, M. Röhrken, S. Ryu, H. Sahoo, K. Sakai, Y. Sakai, S. Sandilya, D. Santel, T. Sanuki, Y. Sato, O. Schneider, G. Schnell, C. Schwanda, A. J. Schwartz, K. Senyo, O. Seon, M. E. Sevior, M. Shapkin, C. P. Shen, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. S. Sohn, A. Sokolov, E. Solovieva, M. Starič, M. Sumihama, T. Sumiyoshi, G. Tatishvili, Y. Teramoto, K. Trabelsi, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Ushiroda, Y. Usov, C. Van Hulse, P. Vanhoefer, G. Varner, K. E. Varvell, V. Vorobyev, M. N. Wagner, C. H. Wang, M. Z. Wang, P. Wang, M. Watanabe, Y. Watanabe, K. M. Williams, E. Won, B. D. Yabsley, H. Yamamoto, Y. Yamashita, Y. Yusa, Z. P. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

School of Earth System Sciences

High Energy Accelerator Research Organization, Tsukuba
Nagoya University
The University of Tokyo
Pacific Northwest National Laboratory
Alikhanov Institute for Theoretical and Experimental Physics
Tata Institute of Fundamental Research
The University of Sydney
University of Hawai'i at Mānoa
Nara Women's University
Indian Institute of Technology Guwahati
Novosibirsk State University
Wayne State University
H. Niewodniczanski Institute of Nuclear Physics
Jožef Stefan Institute
University of Maribor
Max Planck Institute for Physics (Werner Heisenberg Institute)
National Central University
National Taiwan University
Hanyang University
Yonsei University
Korea Institute of Science and Technology Information
Sungkyunkwan University
Technische Universität München
University of Bonn
Charles University
Moscow Engineering Physics Institute
University of Cincinnati
University of Göttingen
University of Ljubljana
Tohoku Gakuin University
Tohoku University
University of Melbourne
Niigata University
Kyungpook National University
Korea University
Karlsruhe Institute of Technology
Tokyo Metropolitan University
Justus Liebig University Giessen
Seoul National University
Virginia Polytechnic Institute and State University
Indian Institute of Technology Madras
University of Science and Technology of China
CAS - Institute of High Energy Physics
Osaka Metropolitan University
Tokyo University of Agriculture and Technology
Kanagawa University
Luther College, Decorah
Swiss Federal Institute of Technology Lausanne
University of the Basque Country
Ikerbasque Basque Foundation for Science
Austrian Academy of Sciences
Yamagata University
Institute for High Energy Physics
Institute of Science Tokyo
Gifu University
National United University Taiwan
Nippon Dental University

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

138 Scopus citations

Abstract

We measure the branching fraction of B^-→τ ^-ν_̄τ using the full Υ(4S) data sample containing 772×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e⁺e^- collider. Events with BB̄ pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B^-→τ ^-ν_̄τ candidates are detected in the recoil. We find evidence for B^-→τ ^-ν_̄τ with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B ^-→τ^-ν_̄τ)=[0.72-0.25+0. 27(stat)±0.11(syst)]×10^-4.

Original language	English
Article number	131801
Journal	Physical Review Letters
Volume	110
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.110.131801
State	Published - 25 Mar 2013

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10.1103/PhysRevLett.110.131801

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Hara, K., Horii, Y., Iijima, T., Adachi, I., Aihara, H., Asner, D. M., Aushev, T., Aziz, T., Bakich, A. M., Barrett, M., Bhardwaj, V., Bhuyan, B., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Browder, T. E., Chekelian, V., Chen, A., ... Zupanc, A. (2013). Evidence for B-→τ-ν_̄τ with a hadronic tagging method using the full data sample of belle. Physical Review Letters, 110(13), Article 131801. https://doi.org/10.1103/PhysRevLett.110.131801

@article{29d009b5f83a4abe9c3190468064ef3c,

title = "Evidence for B-→τ-{\=ν}τ with a hadronic tagging method using the full data sample of belle",

abstract = "We measure the branching fraction of B-→τ -{\=ν}τ using the full Υ(4S) data sample containing 772{\texttimes}106 B{\=B} pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events with B{\=B} pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B-→τ -{\=ν}τ candidates are detected in the recoil. We find evidence for B-→τ -{\=ν}τ with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B -→τ-{\=ν}τ)=[0.72-0.25+0. 27(stat)±0.11(syst)]{\texttimes}10-4.",

author = "K. Hara and Y. Horii and T. Iijima and I. Adachi and H. Aihara and Asner, \{D. M.\} and T. Aushev and T. Aziz and Bakich, \{A. M.\} and M. Barrett and V. Bhardwaj and B. Bhuyan and A. Bondar and G. Bonvicini and A. Bozek and M. Bra{\v c}ko and Browder, \{T. E.\} and V. Chekelian and A. Chen and P. Chen and Cheon, \{B. G.\} and K. Chilikin and Cho, \{I. S.\} and K. Cho and Y. Choi and D. Cinabro and J. Dalseno and J. Dingfelder and Z. Dole{\v z}al and Z. Dr{\'a}sal and A. Drutskoy and D. Dutta and S. Eidelman and D. Epifanov and S. Esen and H. Farhat and A. Frey and V. Gaur and N. Gabyshev and S. Ganguly and R. Gillard and Goh, \{Y. M.\} and B. Golob and J. Haba and T. Hara and K. Hayasaka and H. Hayashii and T. Higuchi and Y. Hoshi and K. Inami and A. Ishikawa and R. Itoh and Y. Iwasaki and T. Iwashita and T. Julius and Kang, \{J. H.\} and T. Kawasaki and C. Kiesling and Kim, \{H. O.\} and Kim, \{J. B.\} and Kim, \{J. H.\} and Kim, \{K. T.\} and Kim, \{M. J.\} and Kim, \{Y. J.\} and K. Kinoshita and J. Klucar and Ko, \{B. R.\} and P. Kody{\v s} and S. Korpar and Kouzes, \{R. T.\} and P. Kri{\v z}an and P. Krokovny and B. Kronenbitter and T. Kuhr and T. Kumita and A. Kuzmin and Kwon, \{Y. J.\} and Lange, \{J. S.\} and Lee, \{S. H.\} and J. Li and Y. Li and J. Libby and C. Liu and Y. Liu and Liu, \{Z. Q.\} and D. Liventsev and D. Matvienko and K. Miyabayashi and H. Miyata and R. Mizuk and Mohanty, \{G. B.\} and A. Moll and T. Mori and N. Muramatsu and E. Nakano and M. Nakao and H. Nakazawa and Z. Natkaniec and M. Nayak and C. Ng and Nisar, \{N. K.\} and S. Nishida and K. Nishimura and O. Nitoh and T. Nozaki and T. Ohshima and S. Okuno and Olsen, \{S. L.\} and C. Oswald and H. Ozaki and P. Pakhlov and G. Pakhlova and Park, \{C. W.\} and Park, \{H. K.\} and Pedlar, \{T. K.\} and R. Pestotnik and M. Petri{\v c} and Piilonen, \{L. E.\} and M. Prim and M. R{\"o}hrken and S. Ryu and H. Sahoo and K. Sakai and Y. Sakai and S. Sandilya and D. Santel and T. Sanuki and Y. Sato and O. Schneider and G. Schnell and C. Schwanda and Schwartz, \{A. J.\} and K. Senyo and O. Seon and Sevior, \{M. E.\} and M. Shapkin and Shen, \{C. P.\} and Shibata, \{T. A.\} and Shiu, \{J. G.\} and B. Shwartz and A. Sibidanov and F. Simon and P. Smerkol and Sohn, \{Y. S.\} and A. Sokolov and E. Solovieva and M. Stari{\v c} and M. Sumihama and T. Sumiyoshi and G. Tatishvili and Y. Teramoto and K. Trabelsi and T. Tsuboyama and M. Uchida and S. Uehara and Y. Unno and S. Uno and P. Urquijo and Y. Ushiroda and Y. Usov and \{Van Hulse\}, C. and P. Vanhoefer and G. Varner and Varvell, \{K. E.\} and V. Vorobyev and Wagner, \{M. N.\} and Wang, \{C. H.\} and Wang, \{M. Z.\} and P. Wang and M. Watanabe and Y. Watanabe and Williams, \{K. M.\} and E. Won and Yabsley, \{B. D.\} and H. Yamamoto and Y. Yamashita and Y. Yusa and Zhang, \{Z. P.\} and V. Zhilich and V. Zhulanov and A. Zupanc",

year = "2013",

month = mar,

day = "25",

doi = "10.1103/PhysRevLett.110.131801",

language = "English",

volume = "110",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "13",

}

Hara, K, Horii, Y, Iijima, T, Adachi, I, Aihara, H, Asner, DM, Aushev, T, Aziz, T, Bakich, AM, Barrett, M, Bhardwaj, V, Bhuyan, B, Bondar, A, Bonvicini, G, Bozek, A, Bračko, M, Browder, TE, Chekelian, V, Chen, A, Chen, P, Cheon, BG, Chilikin, K, Cho, IS, Cho, K, Choi, Y, Cinabro, D, Dalseno, J, Dingfelder, J, Doležal, Z, Drásal, Z, Drutskoy, A, Dutta, D, Eidelman, S, Epifanov, D, Esen, S, Farhat, H, Frey, A, Gaur, V, Gabyshev, N, Ganguly, S, Gillard, R, Goh, YM, Golob, B, Haba, J, Hara, T, Hayasaka, K, Hayashii, H, Higuchi, T, Hoshi, Y, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, Y, Iwashita, T, Julius, T, Kang, JH, Kawasaki, T, Kiesling, C, Kim, HO, Kim, JB, Kim, JH, Kim, KT, Kim, MJ, Kim, YJ, Kinoshita, K, Klucar, J, Ko, BR, Kodyš, P, Korpar, S, Kouzes, RT, Križan, P, Krokovny, P, Kronenbitter, B, Kuhr, T, Kumita, T, Kuzmin, A, Kwon, YJ, Lange, JS, Lee, SH, Li, J, Li, Y, Libby, J, Liu, C, Liu, Y, Liu, ZQ, Liventsev, D, Matvienko, D, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, GB, Moll, A, Mori, T, Muramatsu, N, Nakano, E, Nakao, M, Nakazawa, H, Natkaniec, Z, Nayak, M, Ng, C, Nisar, NK, Nishida, S, Nishimura, K, Nitoh, O, Nozaki, T, Ohshima, T, Okuno, S, Olsen, SL, Oswald, C, Ozaki, H, Pakhlov, P, Pakhlova, G, Park, CW, Park, HK, Pedlar, TK, Pestotnik, R, Petrič, M, Piilonen, LE, Prim, M, Röhrken, M, Ryu, S, Sahoo, H, Sakai, K, Sakai, Y, Sandilya, S, Santel, D, Sanuki, T, Sato, Y, Schneider, O, Schnell, G, Schwanda, C, Schwartz, AJ, Senyo, K, Seon, O, Sevior, ME, Shapkin, M, Shen, CP, Shibata, TA, Shiu, JG, Shwartz, B, Sibidanov, A, Simon, F, Smerkol, P, Sohn, YS, Sokolov, A, Solovieva, E, Starič, M, Sumihama, M, Sumiyoshi, T, Tatishvili, G, Teramoto, Y, Trabelsi, K, Tsuboyama, T, Uchida, M, Uehara, S, Unno, Y, Uno, S, Urquijo, P, Ushiroda, Y, Usov, Y, Van Hulse, C, Vanhoefer, P, Varner, G, Varvell, KE, Vorobyev, V, Wagner, MN, Wang, CH, Wang, MZ, Wang, P, Watanabe, M, Watanabe, Y, Williams, KM, Won, E, Yabsley, BD, Yamamoto, H, Yamashita, Y, Yusa, Y, Zhang, ZP, Zhilich, V, Zhulanov, V & Zupanc, A 2013, 'Evidence for B-→τ-ν_̄τ with a hadronic tagging method using the full data sample of belle', Physical Review Letters, vol. 110, no. 13, 131801. https://doi.org/10.1103/PhysRevLett.110.131801

TY - JOUR

T1 - Evidence for B-→τ-ν̄τ with a hadronic tagging method using the full data sample of belle

AU - Hara, K.

AU - Horii, Y.

AU - Iijima, T.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aushev, T.

AU - Aziz, T.

AU - Bakich, A. M.

AU - Barrett, M.

AU - Bhardwaj, V.

AU - Bhuyan, B.

AU - Bondar, A.

AU - Bonvicini, G.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chekelian, V.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, I. S.

AU - Cho, K.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Dingfelder, J.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, D.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Esen, S.

AU - Farhat, H.

AU - Frey, A.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

AU - Gillard, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Higuchi, T.

AU - Hoshi, Y.

AU - Inami, K.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, Y.

AU - Iwashita, T.

AU - Julius, T.

AU - Kang, J. H.

AU - Kawasaki, T.

AU - Kiesling, C.

AU - Kim, H. O.

AU - Kim, J. B.

AU - Kim, J. H.

AU - Kim, K. T.

AU - Kim, M. J.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Klucar, J.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Kouzes, R. T.

AU - Križan, P.

AU - Krokovny, P.

AU - Kronenbitter, B.

AU - Kuhr, T.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lange, J. S.

AU - Lee, S. H.

AU - Li, J.

AU - Li, Y.

AU - Libby, J.

AU - Liu, C.

AU - Liu, Y.

AU - Liu, Z. Q.

AU - Liventsev, D.

AU - Matvienko, D.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Mizuk, R.

AU - Mohanty, G. B.

AU - Moll, A.

AU - Mori, T.

AU - Muramatsu, N.

AU - Nakano, E.

AU - Nakao, M.

AU - Nakazawa, H.

AU - Natkaniec, Z.

AU - Nayak, M.

AU - Ng, C.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Nishimura, K.

AU - Nitoh, O.

AU - Nozaki, T.

AU - Ohshima, T.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Oswald, C.

AU - Ozaki, H.

AU - Pakhlov, P.

AU - Pakhlova, G.

AU - Park, C. W.

AU - Park, H. K.

AU - Pedlar, T. K.

AU - Pestotnik, R.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Prim, M.

AU - Röhrken, M.

AU - Ryu, S.

AU - Sahoo, H.

AU - Sakai, K.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Santel, D.

AU - Sanuki, T.

AU - Sato, Y.

AU - Schneider, O.

AU - Schnell, G.

AU - Schwanda, C.

AU - Schwartz, A. J.

AU - Senyo, K.

AU - Seon, O.

AU - Sevior, M. E.

AU - Shapkin, M.

AU - Shen, C. P.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Sibidanov, A.

AU - Simon, F.

AU - Smerkol, P.

AU - Sohn, Y. S.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Starič, M.

AU - Sumihama, M.

AU - Sumiyoshi, T.

AU - Tatishvili, G.

AU - Teramoto, Y.

AU - Trabelsi, K.

AU - Tsuboyama, T.

AU - Uchida, M.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Ushiroda, Y.

AU - Usov, Y.

AU - Van Hulse, C.

AU - Vanhoefer, P.

AU - Varner, G.

AU - Varvell, K. E.

AU - Vorobyev, V.

AU - Wagner, M. N.

AU - Wang, C. H.

AU - Wang, M. Z.

AU - Wang, P.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Williams, K. M.

AU - Won, E.

AU - Yabsley, B. D.

AU - Yamamoto, H.

AU - Yamashita, Y.

AU - Yusa, Y.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zhulanov, V.

AU - Zupanc, A.

PY - 2013/3/25

Y1 - 2013/3/25

N2 - We measure the branching fraction of B-→τ -ν̄τ using the full Υ(4S) data sample containing 772×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events with BB̄ pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B-→τ -ν̄τ candidates are detected in the recoil. We find evidence for B-→τ -ν̄τ with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B -→τ-ν̄τ)=[0.72-0.25+0. 27(stat)±0.11(syst)]×10-4.

AB - We measure the branching fraction of B-→τ -ν̄τ using the full Υ(4S) data sample containing 772×106 BB̄ pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events with BB̄ pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B-→τ -ν̄τ candidates are detected in the recoil. We find evidence for B-→τ -ν̄τ with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B -→τ-ν̄τ)=[0.72-0.25+0. 27(stat)±0.11(syst)]×10-4.

UR - https://www.scopus.com/pages/publications/84875424935

U2 - 10.1103/PhysRevLett.110.131801

DO - 10.1103/PhysRevLett.110.131801

M3 - Article

C2 - 23581309

AN - SCOPUS:84875424935

SN - 0031-9007

VL - 110

JO - Physical Review Letters

JF - Physical Review Letters

IS - 13

M1 - 131801

ER -

Evidence for B-→τ-ν_̄τ with a hadronic tagging method using the full data sample of belle

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