Kinematics of τ two-body decay near τ threshold at BESⅢ

MO Xiao-Hu

doi:10.1088/1674-1137/34/11/001

Chinese Physics C> 2010, Vol. 34> Issue(11) : 1671-1679 DOI: 10.1088/1674-1137/34/11/001

Kinematics of τ two-body decay near τ threshold at BESⅢ

MO Xiao-Hu

Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
The kinematic properties of two-body decay near τ threshold are studied according to the special capacity of the BEPCⅡ accelerator and the BESⅢ detector. Explicitly presented are the transformations of energy and momentum of hadronic particles between different reference frames, and the corresponding distributions. A brand new method is proposed to obtain the energy spread of the accelerator by fitting the energy distribution of hadron from τ semi-leptonic decays.

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MO Xiao-Hu. Kinematics of τ two-body decay near τ threshold at BESⅢ[J]. Chinese Physics C, 2010, 34(11): 1671-1679. doi: 10.1088/1674-1137/34/11/001

MO Xiao-Hu. Kinematics of τ two-body decay near τ threshold at BESⅢ[J]. Chinese Physics C, 2010, 34(11): 1671-1679. doi: 10.1088/1674-1137/34/11/001 shu

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Received: 2010-02-23
Revised: 2010-03-24

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沈阳化工大学材料科学与工程学院沈阳 110142

Kinematics of τ two-body decay near τ threshold at BESⅢ

MO Xiao-Hu

Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2010-02-23
Accepted Date: 2010-03-24
Available Online: 2010-11-05

Abstract:

The kinematic properties of two-body decay near τ threshold are studied according to the special capacity of the BEPCⅡ accelerator and the BESⅢ detector. Explicitly presented are the transformations of energy and momentum of hadronic particles between different reference frames, and the corresponding distributions. A brand new method is proposed to obtain the energy spread of the accelerator by fitting the energy distribution of hadron from τ semi-leptonic decays.