Search for B 0 → π − τ + ν τ with hadronic tagging at Belle

/ Authors

B. Hamer, A. Frey, A. Abdesselam, I. Adachi, H. Aihara, S. Said, K. Arinstein, D. Asner, T. Aushev, R. Ayad

and 173 more authors

V. Babu, I. Badhrees, A. Bakich, E. Barberio, B. Bhuyan, J. Biswal, A. Bozek, M. Bravcko, T. Browder, D. vCervenkov, V. Chekelian, A. Chen, B. Cheon, K. Chilikin, K. Cho, V. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, I. Dankó, N. Dash, J. Dingfelder, Z. Dolevzal, Z. Dr'asal, A. Drutskoy, D. Dutta, S. Eidelman, H. Farhat, J. Fast, T. Ferber, B. Fulsom, V. Gaur, N. Gabyshev, A. Garmash, D. Getzkow, R. Gillard, R. Glattauer, Y. Goh, P. Goldenzweig, B. Golob, D. Greenwald, J. Haba, T. Hara, J. Hasenbusch, K. Hayasaka, H. Hayashii, W. Hou, T. Iijima, K. Inami, G. Inguglia, A. Ishikawa, R. Itoh, Y. Iwasaki, I. Jaegle, H. Jeon, D. Joffe, K. Joo, T. Julius, K. Kang, E. Kato, T. Kawasaki, C. Kiesling, D. Kim, J. Kim, Jae Hyun Kim, K. Kim, M. Kim, S. Kim, Y. Kim, K. Kinoshita, P. Kodyvs, S. Korpar, P. Krivzan, P. Krokovny, T. Kuhr, A. Kuzmin, Y. Kwon, J. Lange, D. H. Lee, I. Lee, H. Li, L. Li, Y. Li, J. Libby, Y. Liu, D. Liventsev, P. Lukin, M. Masuda, D. Matvienko, K. Miyabayashi, H. Miyake, H. Miyata, R. Mizuk, G. Mohanty, S. Mohanty, A. Moll, H. Moon, R. Mussa, E. Nakano, M. Nakao, T. Nanut, Z. Natkaniec, M. Nayak, N. Nisar, S. Nishida, S. Ogawa, S. Okuno, C. Oswald, P. Pakhlov, G. Pakhlova, B. Pal, H. Park, T. Pedlar, L. Pes'antez, R. Pestotnik, M. Petrivc, L. Piilonen, C. Pulvermacher, J. Rauch, E. Ribevzl, M. Ritter, A. Rostomyan, H. Sahoo, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, Y. Seino, K. Senyo, M. Shapkin, V. Shebalin, T. Shibata, J. Shiu, A. Sibidanov, F. Simon, Y. Sohn, A. Sokolov, E. Solovieva, M. Starivc, J. Stypuła, T. Sumiyoshi, Y. Teramoto, K. Trabelsi, V. Trusov, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, Y. Usov, C. Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, A. Vossen, C. Wang, M. Wang, P. Wang, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, S. Yashchenko, Y. Yook, Z. Zhang, V. Zhilich, V. Zhulanov, A. Zupanc

/ Abstract

We search for the process B-0 -> pi(-) tau(+)nu(tau) using the full Belle data set of 711 fb(-1), corresponding to 772 x 10(6)B (B) over bar pairs, collected at the gamma (4S) 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 -> pi(-)tau(+)nu(tau) process in the remainder of the event. No significant signal is observed and an upper limit of B(B-0 -> pi(-) tau(+)nu(tau)) < 2.5 x 10(-4) is obtained at the 90% confidence level.

Journal: Physical Review D

DOI: 10.1103/PhysRevD.93.032007