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Observation of B-0 -> D*-tau(+)nu(tau) decay at belleopen access

Authors
Matyja, A.Rozanska, M.Adachi, I.Aihara, H.Aulchenko, V.Aushev, T.Bahinipati, S.Bakich, A. M.Balagura, V.Barberio, E.Bedny, I.Bhardwaj, V.Bitenc, U.Bondar, A.Bozek, A.Bracko, M.Brodzicka, J.Browder, T. E.Chang, M. -C.Chang, P.Chen, A.Chen, K. -F.Cheon, Byung GuChistov, R.Cho, I. -S.Choi, Y.Choi, Y. K.Dalseno, J.Dash, M.Eidelman, S.Fratina, S.Gabyshev, N.Golob, B.Ha, H.Haba, J.Hara, T.Hayasaka, K.Hazumi, M.Heffernan, D.Hokuue, T.Hoshi, Y.Hou, W. -S.Hyun, H. J.Iijima, T.Ikado, K.Inami, K.Ishikawa, A.Ishino, H.Itoh, R.Iwasaki, Y.Kaji, H.Kajiwara, S.Kang, J. H.Katayama, N.Kawai, H.Kawasaki, T.Kichimi, H.Kim, Y. J.Kinoshita, K.Korpar, S.Kozakai, Y.Krizan, P.Krokovny, P.Kumar, R.Kuo, C. C.Kwon, Y. -J.Lee, J. S.Lee, S. E.Lesiak, T.Lin, S. -W.Liu, Y.Liventsev, D.Mandl, F.McOnie, S.Medvedeva, T.Miyabayashi, K.Miyake, H.Miyata, H.Miyazaki, Y.Mizuk, R.Mori, T.Nagasaka, Y.Nakamura, I.Nakao, M.Natkaniec, Z.Nishida, S.Nitoh, O.Nozaki, T.Ogawa, S.Ohshima, T.Okuno, S.Olsen, S. L.Ozaki, H.Pakhlov, P.Pakhlova, G.Palka, H.Park, H.Park, K. S.Pestotnik, R.Piilonen, L. E.Sakai, Y.Schneider, O.Schumann, J.Schwanda, C.Schwartz, A. J.Senyo, K.Sevior, M. E.Shapkin, M.Shen, C. P.Shibuya, H.Shinomiya, S.Shiu, J. -G.Singh, J. B.Sokolov, A.Somov, A.Stanic, S.Staric, M.Sumisawa, K.Sumiyoshi, T.Tajima, O.Takasaki, F.Tanaka, M.Taylor, G. N.Teramoto, Y.Uehara, K. Trabelsi S.Unno, Y.Uno, S.Urquijo, P.Ushiroda, Y.Varner, G.Varvell, K. E.Vervink, K.Villa, S.Wang, C. C.Wang, C. H.Wang, P.Watanabe, Y.Won, E.Yabsley, B. D.Yamaguchi, A.Yamashita, Y.Yamauchi, M.Zhang, Z. P.Zupanc, A.
Issue Date
Nov-2007
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.99, no.19
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW LETTERS
Volume
99
Number
19
URI
https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/179400
DOI
10.1103/PhysRevLett.99.191807
ISSN
0031-9007
Abstract
We report an observation of the decay B-0 -> D*-tau(+)nu(tau) in a data sample containing 535x10(6) B (B) over bar pairs collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. We find a signal with a significance of 5.2 sigma and measure the branching fraction B(B-0 -> D*-tau(+)nu(tau))=(2.02(-0.37)(+0.40)(stat)+/- 0.37(syst))%. This is the first observation of an exclusive B decay with a b -> c tau nu(tau) transition.
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