Evidence for B- -> tau- nu_tau-bar with a Hadronic Tagging Method Using the Full Data Sample of Belle
High Energy Physics - Experiment
2013-04-17 v3
Abstract
We measure the branching fraction of B- -> tau- nu_tau-bar using the full Upsilon(4S) data sample containing 772*10^6 BBbar pairs collected with the Belle detector at the KEKB asymmetric-energy e+e- collider. Events with BBbar pairs are tagged by reconstructing one of the B mesons decaying into hadronic final states, and B- -> tau- nu_tau-bar candidates are detected in the recoil. We find evidence for B- -> tau- nu_tau-bar with a significance of 3.0 standard deviations including systematic errors and measure a branching fraction B(B- -> tau- nu_tau-bar) = [0.72^{+0.27}_{-0.25}(stat) +/- 0.11(syst)] * 10^-4.
Keywords
Cite
@article{arxiv.1208.4678,
title = {Evidence for B- -> tau- nu_tau-bar with a Hadronic Tagging Method Using the Full Data Sample of Belle},
author = {Belle Collaboration and K. Hara and Y. Horii and T. Iijima and I. Adachi and H. Aihara and D. M. Asner and T. Aushev and T. Aziz and A. M. Bakich and M. Barrett and V. Bhardwaj and B. Bhuyan and A. Bondar and G. Bonvicini and A. Bozek and M. Bracko and T. E. Browder and V. Chekelian and A. Chen and P. Chen and B. G. Cheon and K. Chilikin and I. -S. Cho and K. Cho and Y. Choi and D. Cinabro and J. Dalseno and J. Dingfelder and Z. Dolezal and Z. Drásal 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 Y. M. Goh 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 J. H. Kang and T. Kawasaki and C. Kiesling and H. O. Kim and J. B. Kim and J. H. Kim and K. T. Kim and M. J. Kim and Y. J. Kim and K. Kinoshita and J. Klucar and B. R. Ko and P. Kodys and S. Korpar and R. T. Kouzes and P. Krizan and P. Krokovny and B. Kronenbitter and T. Kuhr and T. Kumita and A. Kuzmin and Y. -J. Kwon and J. S. Lange and S. -H. Lee and J. Li and Y. Li and J. Libby and C. Liu and Y. Liu and Z. Q. Liu and D. Liventsev and D. Matvienko and K. Miyabayashi and H. Miyata and R. Mizuk and G. B. Mohanty 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 N. K. Nisar and S. Nishida and K. Nishimura and O. Nitoh and T. Nozaki and T. Ohshima and S. Okuno and S. L. Olsen and C. Oswald and H. Ozaki and P. Pakhlov and G. Pakhlova and C. W. Park and H. K. Park and T. K. Pedlar and R. Pestotnik and M. Petric and L. E. Piilonen and M. Prim and M. Röhrken 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 A. J. Schwartz and K. Senyo and O. Seon and M. E. Sevior and M. Shapkin and C. P. Shen and T. -A. Shibata and J. -G. Shiu and B. Shwartz and A. Sibidanov and F. Simon and P. Smerkol and Y. -S. Sohn and A. Sokolov and E. Solovieva and M. Staric 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 C. Van Hulse and P. Vanhoefer and G. Varner and K. E. Varvell and V. Vorobyev and M. N. Wagner and C. H. Wang and M. -Z. Wang and P. Wang and M. Watanabe and Y. Watanabe and K. M. Williams and E. Won and B. D. Yabsley and H. Yamamoto and Y. Yamashita and Y. Yusa and Z. P. Zhang and V. Zhilich and V. Zhulanov and A. Zupanc},
journal= {arXiv preprint arXiv:1208.4678},
year = {2013}
}
Comments
6 pages, 2 figures, figure 1 replaced, version published in PRL