Chinese Physics C > 1997, Vol. 21 > Issue(3): 193-200

Measurement of the Branching Ratios of τ^±→π^±+nπ⁰+ν_τ(n=0,1,2) decays

BES Collaboration

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039

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Abstract：
Using the data sample accumulated with the Beijing Spectrometer at the center-of-mass energy of 4.03GeV,we have analysed τ ^±τ ^±→e ^±+π ^±+nπ ⁰+ν's(n=0,1,2)events.The branching ratios are given as Br(τ ^±→π ^±ν _τ)=(11.64±0.49 ^+0.76 _－0.73%,Br(τ ^±→π ^±π ⁰ν _τ)=(24.00±1.34 ^+1.36 _－1.30%,Br(τ ^±→π ^±2π ⁰ν _τ)=(9.39±1.68 ^+1.69 _－1.66%.

References

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BES Collaboration. Measurement of the Branching Ratios of τ ^±→π ^±+nπ ⁰+ν _τ(n=0,1,2) decays[J]. Chinese Physics C, 1997, 21(3): 193-200.

BES Collaboration. Measurement of the Branching Ratios of τ ^±→π ^±+nπ ⁰+ν _τ(n=0,1,2) decays[J]. Chinese Physics C, 1997, 21(3): 193-200. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Measurement of the Branching Ratios of τ^±→π^±+nπ⁰+ν_τ(n=0,1,2) decays

BES Collaboration

Institute of High Energy Physics,The Chinese Academy of Sciences,Beijing 100039

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1997-03-05

Abstract:Using the data sample accumulated with the Beijing Spectrometer at the center-of-mass energy of 4.03GeV,we have analysed τ^±τ^±→e^±+π^±+nπ⁰+ν's(n=0,1,2)events.The branching ratios are given as Br(τ^±→π^±ν_τ)=(11.64±0.49^+0.76_－0.73%,Br(τ^±→π^±π⁰ν_τ)=(24.00±1.34^+1.36_－1.30%,Br(τ^±→π^±2π⁰ν_τ)=(9.39±1.68^+1.69_－1.66%.