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Search for $B^{0} \to π^{-} τ^{+} ν_{τ}$ with hadronic tagging at Belle

P. Hamer⁹, A. Frey⁹, A. Abdesselam⁵⁷, I. Adachi^13,10, H. Aihara⁶⁴, S. Al Said^57,28, K. Arinstein^3,49, D. M. Asner⁵¹, T. Aushev⁴⁰ et al. (Belle Collaboration)

T. Aushev⁴⁰, R. Ayad⁵⁷, V. Babu⁵⁸, I. Badhrees^57,27, A. M. Bakich⁵⁶, E. Barberio³⁸, B. Bhuyan¹⁶, J. Biswal²³, A. Bozek⁴⁷, M. Bračko^36,23, T. E. Browder¹², D. Červenkov⁴, V. Chekelian³⁷, A. Chen⁴⁴, B. G. Cheon¹¹, K. Chilikin³⁹, K. Cho²⁹, V. Chobanova³⁷, Y. Choi⁵⁵, D. Cinabro⁶⁹, J. Dalseno^37,59, M. Danilov³⁹, I. Danko⁵², N. Dash¹⁵, J. Dingfelder², Z. Doležal⁴, Z. Drásal⁴, A. Drutskoy³⁹, D. Dutta⁵⁸, S. Eidelman^3,49, H. Farhat⁶⁹, J. E. Fast⁵¹, T. Ferber⁷, B. G. Fulsom⁵¹, V. Gaur⁵⁸, N. Gabyshev^3,49, A. Garmash^3,49, D. Getzkow⁸, R. Gillard⁶⁹, R. Glattauer²⁰, Y. M. Goh¹¹, P. Goldenzweig²⁵, B. Golob^33,23, D. Greenwald⁶⁰, J. Haba^13,10, T. Hara^13,10, J. Hasenbusch², K. Hayasaka⁴², H. Hayashii⁴³, W.-S. Hou⁴⁶, T. Iijima^42,41, K. Inami⁴¹, G. Inguglia⁷, A. Ishikawa⁶², R. Itoh^13,10, Y. Iwasaki¹³, I. Jaegle¹², H. B. Jeon³¹, D. Joffe²⁶, K. K. Joo⁵, T. Julius³⁸, K. H. Kang³¹, E. Kato⁶², T. Kawasaki⁴⁸, C. Kiesling³⁷, D. Y. Kim⁵⁴, J. B. Kim³⁰, J. H. Kim²⁹, K. T. Kim³⁰, M. J. Kim³¹, S. H. Kim¹¹, Y. J. Kim²⁹, K. Kinoshita⁶, P. Kodyš⁴, S. Korpar^36,23, P. Križan^33,23, P. Krokovny^3,49, T. Kuhr³⁴, A. Kuzmin^3,49, Y.-J. Kwon⁷¹, J. S. Lange⁸, D. H. Lee³⁰, I. S. Lee¹¹, H. Li¹⁸, L. Li⁵³, Y. Li⁶⁸, J. Libby¹⁷, Y. Liu⁶, D. Liventsev^68,13, P. Lukin^3,49, M. Masuda⁶³, D. Matvienko^3,49, K. Miyabayashi⁴³, H. Miyake^13,10, H. Miyata⁴⁸, R. Mizuk^39,40, G. B. Mohanty⁵⁸, S. Mohanty^58,67, A. Moll^37,59, H. K. Moon³⁰, R. Mussa²², E. Nakano⁵⁰, M. Nakao^13,10, T. Nanut²³, Z. Natkaniec⁴⁷, M. Nayak¹⁷, N. K. Nisar⁵⁸, S. Nishida^13,10, S. Ogawa⁶¹, S. Okuno²⁴, C. Oswald², P. Pakhlov³⁹, G. Pakhlova⁴⁰, B. Pal⁶, H. Park³¹, T. K. Pedlar³⁵, L. Pesántez², R. Pestotnik²³, M. Petrič²³, L. E. Piilonen⁶⁸, C. Pulvermacher²⁵, J. Rauch⁶⁰, E. Ribežl²³, M. Ritter³⁴, A. Rostomyan⁷, H. Sahoo¹², Y. Sakai^13,10, S. Sandilya⁵⁸, L. Santelj¹³, T. Sanuki⁶², V. Savinov⁵², O. Schneider³², G. Schnell^1,14, C. Schwanda²⁰, Y. Seino⁴⁸, K. Senyo⁷⁰, M. Shapkin²¹, V. Shebalin^3,49, T.-A. Shibata⁶⁵, J.-G. Shiu⁴⁶, A. Sibidanov⁵⁶, F. Simon^37,59, Y.-S. Sohn⁷¹, A. Sokolov²¹, E. Solovieva⁴⁰, M. Starič²³, J. Stypula⁴⁷, T. Sumiyoshi⁶⁶, Y. Teramoto⁵⁰, K. Trabelsi^13,10, V. Trusov²⁵, M. Uchida⁶⁵, S. Uehara^13,10, Y. Unno¹¹, S. Uno^13,10, P. Urquijo³⁸, Y. Usov^3,49, C. Van Hulse¹, P. Vanhoefer³⁷, G. Varner¹², V. Vorobyev^3,49, A. Vossen¹⁸, C. H. Wang⁴⁵, M.-Z. Wang⁴⁶, P. Wang¹⁹, Y. Watanabe²⁴, E. Won³⁰, H. Yamamoto⁶², J. Yamaoka⁵¹, S. Yashchenko⁷, Y. Yook⁷¹, Z. P. Zhang⁵³, V. Zhilich^3,49, V. Zhulanov^3,49, and A. Zupanc²³ (Belle Collaboration)

¹University of the Basque Country UPV/EHU, 48080 Bilbao
²University of Bonn, 53115 Bonn
³Budker Institute of Nuclear Physics SB RAS, Novosibirsk 630090
⁴Faculty of Mathematics and Physics, Charles University, 121 16 Prague
⁵Chonnam National University, Kwangju 660-701
⁶University of Cincinnati, Cincinnati, Ohio 45221
⁷Deutsches Elektronen–Synchrotron, 22607 Hamburg
⁸Justus-Liebig-Universität Gießen, 35392 Gießen
⁹II. Physikalisches Institut, Georg-August-Universität Göttingen, 37073 Göttingen
¹⁰SOKENDAI (The Graduate University for Advanced Studies), Hayama 240-0193
¹¹Hanyang University, Seoul 133-791
¹²University of Hawaii, Honolulu, Hawaii 96822
¹³High Energy Accelerator Research Organization (KEK), Tsukuba 305-0801
¹⁴IKERBASQUE, Basque Foundation for Science, 48013 Bilbao
¹⁵Indian Institute of Technology Bhubaneswar, Satya Nagar 751007
¹⁶Indian Institute of Technology Guwahati, Assam 781039
¹⁷Indian Institute of Technology Madras, Chennai 600036
¹⁸Indiana University, Bloomington, Indiana 47408
¹⁹Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049
²⁰Institute of High Energy Physics, Vienna 1050
²¹Institute for High Energy Physics, Protvino 142281
²²INFN - Sezione di Torino, 10125 Torino
²³J. Stefan Institute, 1000 Ljubljana
²⁴Kanagawa University, Yokohama 221-8686
²⁵Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe
²⁶Kennesaw State University, Kennesaw GA 30144
²⁷King Abdulaziz City for Science and Technology, Riyadh 11442
²⁸Department of Physics, Faculty of Science, King Abdulaziz University, Jeddah 21589
²⁹Korea Institute of Science and Technology Information, Daejeon 305-806
³⁰Korea University, Seoul 136-713
³¹Kyungpook National University, Daegu 702-701
³²École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015
³³Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana
³⁴Ludwig Maximilians University, 80539 Munich
³⁵Luther College, Decorah, Iowa 52101
³⁶University of Maribor, 2000 Maribor
³⁷Max-Planck-Institut für Physik, 80805 München
³⁸School of Physics, University of Melbourne, Victoria 3010
³⁹Moscow Physical Engineering Institute, Moscow 115409
⁴⁰Moscow Institute of Physics and Technology, Moscow Region 141700
⁴¹Graduate School of Science, Nagoya University, Nagoya 464-8602
⁴²Kobayashi-Maskawa Institute, Nagoya University, Nagoya 464-8602
⁴³Nara Women’s University, Nara 630-8506
⁴⁴National Central University, Chung-li 32054
⁴⁵National United University, Miao Li 36003
⁴⁶Department of Physics, National Taiwan University, Taipei 10617
⁴⁷H. Niewodniczanski Institute of Nuclear Physics, Krakow 31-342
⁴⁸Niigata University, Niigata 950-2181
⁴⁹Novosibirsk State University, Novosibirsk 630090
⁵⁰Osaka City University, Osaka 558-8585
⁵¹Pacific Northwest National Laboratory, Richland, Washington 99352
⁵²University of Pittsburgh, Pittsburgh, Pennsylvania 15260
⁵³University of Science and Technology of China, Hefei 230026
⁵⁴Soongsil University, Seoul 156-743
⁵⁵Sungkyunkwan University, Suwon 440-746
⁵⁶School of Physics, University of Sydney, NSW 2006
⁵⁷Department of Physics, Faculty of Science, University of Tabuk, Tabuk 71451
⁵⁸Tata Institute of Fundamental Research, Mumbai 400005
⁵⁹Excellence Cluster Universe, Technische Universität München, 85748 Garching
⁶⁰Department of Physics, Technische Universität München, 85748 Garching
⁶¹Toho University, Funabashi 274-8510
⁶²Tohoku University, Sendai 980-8578
⁶³Earthquake Research Institute, University of Tokyo, Tokyo 113-0032
⁶⁴Department of Physics, University of Tokyo, Tokyo 113-0033
⁶⁵Tokyo Institute of Technology, Tokyo 152-8550
⁶⁶Tokyo Metropolitan University, Tokyo 192-0397
⁶⁷Utkal University, Bhubaneswar 751004
⁶⁸CNP, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061
⁶⁹Wayne State University, Detroit, Michigan 48202
⁷⁰Yamagata University, Yamagata 990-8560
⁷¹Yonsei University, Seoul 120-749

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Phys. Rev. D 93, 032007 – Published 22 February, 2016

DOI: https://doi.org/10.1103/PhysRevD.93.032007

Abstract

We search for the process $B^{0} \to π^{-} τ^{+} ν_{τ}$ using the full Belle data set of $711 {fb}^{- 1}$ , corresponding to $772 \times 10^{6} B \bar{B}$ pairs, collected at the $ϒ (4 S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider. We reconstruct one $B$ meson in a hadronic decay and search for the $B^{0} \to π^{-} τ^{+} ν_{τ}$ process in the remainder of the event. No significant signal is observed and an upper limit of $B (B^{0} \to π^{-} τ^{+} ν_{τ}) < 2.5 \times 10^{- 4}$ is obtained at the 90% confidence level.

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References (43)

Throughout this paper, the inclusion of the charge-conjugate mode process is implied unless otherwise stated.
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Search for $B^{0} \to π^{-} τ^{+} ν_{τ}$ with hadronic tagging at Belle

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Search for B0→π−τ+ντ with hadronic tagging at Belle

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Search for $B^{0} \to π^{-} τ^{+} ν_{τ}$ with hadronic tagging at Belle