Observation of B(0)-->D(*-)tau(+)nu(tau) decay at Belle.
We report an observation of the decay B{0}-->D{*-}tau{+}nu{tau} in a data sample containing 535x10{6} BB pairs collected with the Belle detector at the KEKB asymmetric-energy e{+}e{-} collider. We find a signal with a significance of 5.2sigma 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-->ctaunu{tau} transition.
Matyja
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H Niewodniczanski Institute of Nuclear Physics, Krakow.
Rozanska
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Adachi
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Aihara
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Aulchenko
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Aushev
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Bahinipati
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Bakich
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Balagura
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Barberio
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Bedny
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Bhardwaj
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Bitenc
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Bondar
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Bozek
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Bracko
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Brodzicka
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Browder
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Chang
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Chang
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Chen
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Chen
K-F
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Cheon
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Chistov
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Cho
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Choi
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Choi
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Dalseno
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Dash
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Eidelman
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Fratina
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Gabyshev
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Golob
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Ha
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Haba
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Hara
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Hayasaka
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Hazumi
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Heffernan
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Hokuue
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Hoshi
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Hou
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Hyun
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Iijima
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Ikado
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Inami
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Ishikawa
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Ishino
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Itoh
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Iwasaki
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Kaji
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Kajiwara
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Kang
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Katayama
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Kawai
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Kawasaki
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Kichimi
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Kim
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Kinoshita
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Korpar
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Kozakai
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Krizan
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Krokovny
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Kumar
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Kuo
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Kwon
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Lee
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Lee
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Lesiak
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Lin
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Liu
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Liventsev
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Mandl
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McOnie
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Medvedeva
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Miyabayashi
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Miyake
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Miyata
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Miyazaki
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Mizuk
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Mori
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Nagasaka
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Nakamura
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Nakao
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Natkaniec
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Nishida
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Nitoh
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Nozaki
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Ogawa
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Ohshima
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Okuno
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Olsen
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Ozaki
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Pakhlov
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Pakhlova
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Palka
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Park
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Park
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Pestotnik
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Piilonen
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Sakai
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Schneider
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Schümann
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Schwanda
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Schwartz
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Senyo
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Sevior
M E
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Shapkin
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Shen
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Shibuya
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Shinomiya
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Shiu
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Singh
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Sokolov
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Somov
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Stanic
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Staric
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Sumisawa
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Sumiyoshi
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Tajima
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Takasaki
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Tanaka
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Taylor
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Teramoto
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Trabelsi
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Uehara
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Unno
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Uno
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Urquijo
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Ushiroda
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Varner
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Varvell
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Vervink
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Villa
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Wang
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Wang
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Wang
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Watanabe
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Won
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Yabsley
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Yamaguchi
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Yamashita
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Yamauchi
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Zhang
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Zupanc
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