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Measurement of the branching fraction of B+ -> tau(+)nu(tau) decays with the semileptonic tagging method

Authors
Kronenbitter, B.Heck, M.Goldenzweig, P.Kuhr, T.Abdesselam, A.Adachi, I.Aihara, H.Al Said, S.Arinstein, K.Asner, D. M.Aushev, T.Ayad, R.Aziz, T.Bakich, A. M.Bansal, V.Barberio, E.Bhardwaj, V.Bondar, A.Bonvicini, G.Bozek, A.Bracko, M.Browder, T. E.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Chistov, R.Cho, K.Chobanova, V.Choi, Y.Cinabro, D.Dalseno, J.Danilov, M.Dingfelder, J.Dolezal, Z.Drasal, Z.Drutskoy, A.Dutta, D.Eidelman, S.Epifanov, D.Farhat, H.Fast, J. E.Ferber, T.Frost, O.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Getzkow, D.Gillard, R.Glattauer, R.Golob, B.Grygier, J.Hayasaka, K.Hayashii, H.He, X. H.Heider, M.Heller, A.Horiguchi, T.Huschle, M.Iijima, T.Inami, K.Ishikawa, A.Itoh, R.Iwasaki, Y.Jaegle, I.Joo, K. K.Julius, T.Kang, K. H.Kato, E.Kim, D. Y.Kim, H. J.Kim, J. B.Kim, J. H.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Ko, B. R.Kodys, P.Krizan, P.Krokovny, P.Kuzmin, A.Kwon, Y. -J.Lange, J. S.Lee, D. H.Lee, I. S.Lewis, P.Gioi, L. LiLibby, J.Liventsev, D.Lukin, P.Matvienko, D.Miyata, H.Mizuk, R.Mohanty, G. B.Mohanty, S.Moll, A.Moon, H. K.Mussa, R.Nakano, E.Nakao, M.Nanut, T.Natkaniec, Z.Nayak, M.Nisar, N. K.Nishida, S.Okuno, S.Olsen, S. L.Ostrowicz, W.Oswald, C.Pakhlov, P.Pakhlova, G.Park, H.Pedlar, T. K.Pesantez, L.Pestotnik, R.Petric, M.Piilonen, L. E.Pulvermacher, C.Ribezl, E.Ritter, M.Rostomyan, A.Ryu, S.Sakai, Y.Santelj, L.Sanuki, T.Sato, Y.Savinov, V.Schneider, O.Schnell, G.Schram, M.Schwanda, C.Schwartz, A. J.Senyo, K.Seon, O.Sevior, M. E.Shebalin, V.Shibata, T. -A.Shiu, J. -G.Shwartz, B.Sibidanov, A.Simon, F.Sohn, Y. -S.Sokolov, A.Solovieva, E.Stanic, S.Staric, M.Steder, M.Sumiyoshi, T.Tamponi, U.Teramoto, Y.Trabelsi, K.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Van Hulse, C.Vanhoefer, P.Varner, G.Vinokurova, A.Vossen, A.Wagner, M. N.Wang, C. H.Wang, M. -ZWang, P.Watanabe, M.Watanabe, Y.Williams, K. M.Won, E.Yamamoto, H.Yashchenko, S.Yook, Y.Zhang, Z. P.Zhilich, V.Zhulanov, V.Ziegler, M.Zupanc, A.
Issue Date
17-9월-2015
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.92, no.5
Indexed
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
92
Number
5
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/92461
DOI
10.1103/PhysRevD.92.051102
ISSN
2470-0010
Abstract
We report a measurement of the branching fraction of B+ -> tau(+) nu(tau) decays using a data sample of 772 x 10(6) B (B) over bar pairs, collected at the Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We reconstruct the accompanying B meson in a semileptonic decay and detect the recoiling B candidate in the decay channel B+ -> tau(+) nu(tau). We obtain a branching fraction of B(B+ -> tau(+) nu(tau)) = [1.25 +/- 0.28(stat.) +/- 0.27(syst.)] x 10-(4). This result is in good agreement with previous measurements and the expectation from the calculation based on the Standard Model.
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