Belle Collaboration
Belle Collaboration
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发表时间:
2001
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通讯作者:
N. Satoyama;K. Abe;I. Adachi;H. Aihara;D. Anipko;A. Bakich;E. Barberio;I. Bedny;K. Belous-K.-Belou
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作者:
N. Satoyama;K. Abe;I. Adachi;H. Aihara;D. Anipko;A. Bakich;E. Barberio;I. Bedny;K. Belous-K.-Belou
We present the first observation of τ lepton decays to hadronic final states with a φ-meson. This analysis is based on 401 fb −1 of data accumulated at the Belle experiment. The branching fraction obtained is B(τ − → φK − ν τ) = (4.05 ± 0.25 ± 0.26) × 10 −5 .