{"paper":{"title":"Measurement of the branching ratio of $\\bar{B}^0 \\rightarrow D^{*+} \\tau^- \\bar{\\nu}_{\\tau}$ relative to $\\bar{B}^0 \\rightarrow D^{*+} \\ell^- \\bar{\\nu}_{\\ell}$ decays with a semileptonic tagging method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Bozek, A. Chen, A. Garmash, A. Ishikawa, A. J. Schwartz, A. M. Bakich, A. Moll, A. Rostomyan, A. Vinokurova, A. Zupanc, B. Bhuyan, B. G. Cheon, B. G. Fulsom, B. Golob, B. Pal, B. Shwartz, C. H. Li, C. H. Wang, C. P. Shen, C. Schwanda, C.-S. Park, C. Van Hulse, C. Z. Yuan, D. Cinabro, D. Epifanov, D. Greenwald, D. Joffe, D. Kotchetkov, D. Liventsev, D. M. Asner, D. Matvienko, D. Y. Kim, E. Nakano, E. Solovieva, E. Won, F. Simon, F. Tenchini, G. B. Mohanty, G. Bonvicini, G. Pakhlova, G. Schnell, G. Varner, H. Aihara, H. Atmacan, H. B. Jeon, H. Farhat, H. Hayashii, H. K. Moon, H. Miyata, H. Yamamoto, I. Badhrees, I. Jaegle, J. Biswal, J. B. Kim, J. E. Fast, J.-G. Shiu, J. Hasenbusch, J. Libby, J. Rauch, J. S. Lange, J. Yamaoka, J. Yelton, K. Adamczyk, K. Chilikin, K. Cho, K. Hara, K. Hayasaka, K. H. Kang, K. Inami, K. J. Nath, K. Kinoshita, K. Miyabayashi, K. M. Williams, K. Negishi, K. R. Nakamura, K. Senyo, K. T. Kim, K. Trabelsi, L. Li, L. Li Gioi, L. PesR. Pestotnik, L. Santelj, M. BraD. P. Chang, M. Danilov, M. E. Sevior, M. J. Kim, M. Masuda, M. Nakao, M. Nayak, M. PetriL. E. Piilonen, M. Rozanska, M. Takizawa, M. Uchida, M. V. Purohit, M.-Z. Wang, N. Dash, N. Gabyshev, N. K. Nisar, O. Seon, P. Behera, P. Goldenzweig, P. Katrenko, P. KodyS. Korpar, P. Krokovny, P. Pakhlov, P. Urquijo, P. Wang, R. Ayad, R. Chistov, R. Itoh, R. Kumar, R. Mizuk, S. Di Carlo, S. Eidelman, S. Hirose, S. H. Kim, S. L. Olsen, S. Nishida, S. Ogawa, S. Okuno, S. Paul, S. Sandilya, S. StaniM. StariJ. F. Strube, S. Uno, T.-A. Shibata, T. Aushev, T. Aziz, T. Ferber, T. Hara, (The Belle collaboration), T. Horiguchi, T. Iijima, T. Julius, T. Kawasaki, T. K. Pedlar, T. Kuhr, T. Luo, T. Matsuda, T. Nanut, T. SchlO. Schneider, T. Sumiyoshi, U. Tamponi, V. Babu, V. Bansal, V. Bhardwaj, V. Chekelian, V. Chobanova, V. Gaur, V. Savinov, V. Shebalin, V. Vorobyev, V. Zhilich, V. Zhukova, V. Zhulanov, W.-S. Hou, Y. Choi, Y. Iwasaki, Y. J. Kim, Y.-J. Kwon, Y. Kato, Y. Li, Y. Onuki, Y. Sakai, Y. Sato, Y. Seino, Y. Ushiroda, Y. Usov, Y. Watanabe, Y. Yamashita, Y. Yook, Y. Yusa, Z. DoleD. Dutta, Z. Natkaniec, Z. P. Zhang","submitted_at":"2016-07-27T00:38:22Z","abstract_excerpt":"We report a measurement of the ratio ${\\cal R}(D^*) = {\\cal B}(\\bar{B}^0 \\rightarrow D^{*+} \\tau^- \\bar{\\nu}_{\\tau})/{\\cal B}(\\bar{B}^0 \\rightarrow D^{*+} \\ell^- \\bar{\\nu}_{\\ell})$, where $\\ell$ denotes an electron or a muon. The results are based on a data sample containing $772\\times10^6$ $B\\bar{B}$ pairs recorded at the $\\Upsilon(4S)$ resonance with the Belle detector at the KEKB $e^+ e^-$ collider. We select a sample of $B^0 \\bar{B}^0$ pairs by reconstructing both $B$ mesons in semileptonic decays to $D^{*\\mp} \\ell^{\\pm}$. We measure ${\\cal R}(D^*)= 0.302 \\pm 0.030({\\rm stat)} \\pm 0.011({\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.07923","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}