MONTE-CARLO CALCULATION ON ACHIEVABLE ACCURACY OF TAU LIFETIME MEASUREMENT BY USING TEC TYPE VERTEX CHAMBER IN e+e－ INTERACTION AT CENTER OF MASS ENERGY √s =40GeV

ZHU Yong-Sheng

Chinese Physics C> 1984, Vol. 8> Issue(5) : 513-522

MONTE-CARLO CALCULATION ON ACHIEVABLE ACCURACY OF TAU LIFETIME MEASUREMENT BY USING TEC TYPE VERTEX CHAMBER IN e⁺e^－ INTERACTION AT CENTER OF MASS ENERGY √s =40GeV

ZHU Yong-Sheng ^,

Institute of High Energy Physics, Academia Sinica

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Abstract：
The most accurate tau lifetime measurement in e⁺e^－ experiments by now is reported by MARK Ⅱ with the value (3.20±0.41±0.35)×10^－13 sec. wherein the second and the third terms are statistical and systematic errors respectively. By using TEC (Time Expansion Chamber) type vertex chamber with position resolution 40μ in r-φ plane at similar experimental condition (∫Ldt=40pb^－1), MONTE-CARLO calculation shows: at center of mass energy √s =40GeV the statistical error of tau lifetime can be decreased to 0.13×10^－13 sec. and the systematic error is in a comparable value.

References

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ZHU Yong-Sheng. MONTE-CARLO CALCULATION ON ACHIEVABLE ACCURACY OF TAU LIFETIME MEASUREMENT BY USING TEC TYPE VERTEX CHAMBER IN e⁺e^－ INTERACTION AT CENTER OF MASS ENERGY √s =40GeV[J]. Chinese Physics C, 1984, 8(5): 513-522.

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Received: 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

MONTE-CARLO CALCULATION ON ACHIEVABLE ACCURACY OF TAU LIFETIME MEASUREMENT BY USING TEC TYPE VERTEX CHAMBER IN e⁺e^－ INTERACTION AT CENTER OF MASS ENERGY √s =40GeV

ZHU Yong-Sheng ^,

Corresponding author: ZHU Yong-Sheng,

Institute of High Energy Physics, Academia Sinica

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1984-10-05

Abstract: The most accurate tau lifetime measurement in e⁺e^－ experiments by now is reported by MARK Ⅱ with the value (3.20±0.41±0.35)×10^－13 sec. wherein the second and the third terms are statistical and systematic errors respectively. By using TEC (Time Expansion Chamber) type vertex chamber with position resolution 40μ in r-φ plane at similar experimental condition (∫Ldt=40pb^－1), MONTE-CARLO calculation shows: at center of mass energy √s =40GeV the statistical error of tau lifetime can be decreased to 0.13×10^－13 sec. and the systematic error is in a comparable value.