Application of Neural Network in τ→ρV<SUB>τ</SUB> Polarization Analysis

Zhang Ziping; Wang Yifang

近期发现有不法分子冒充我刊与作者联系，借此进行欺诈等不法行为，请广大作者加以鉴别，如遇诈骗行为，请第一时间与我刊编辑部联系确认（《中国物理C》（英文）编辑部电话：010-88235947,010-88236950），并作报警处理。

本刊再次郑重声明：

（1）本刊官方网址为cpc.ihep.ac.cn和https://iopscience.iop.org/journal/1674-1137

（2）本刊采编系统作者中心是投稿的唯一路径，该系统为ScholarOne远程稿件采编系统，仅在本刊投稿网网址（https://mc03.manuscriptcentral.com/cpc）设有登录入口。本刊不接受其他方式的投稿，如打印稿投稿、E-mail信箱投稿等，若以此种方式接收投稿均为假冒。

（3）所有投稿均需经过严格的同行评议、编辑加工后方可发表，本刊不存在所谓的“编辑部内部征稿”。如果有人以“编辑部内部人员”名义帮助作者发稿，并收取发表费用，均为假冒。

《中国物理C》（英文）编辑部

2024年10月30日

Chinese Physics C> 1994, Vol. 18> Issue(9) : 769-777

Application of Neural Network in τ→ρV_τ Polarization Analysis

Zhang Ziping ^, ,
Wang Yifang

Uni. of Science cud Technology of China, Hefei 2300262 Lab.for Nuclear Science, MIT, USA3 CERN and INFN-Sezione di Napoli, Italy

Abstract
HTML
Reference
Related

PDF

Abstract：
An artificial neural network was built to select events in the τ→ρV_τ polarization analysis at LEP/L3, much better selection efficiency has been achieved.Detailed studies show that no systematic errors or bias have been introduced by the application of neural network. A polarization of P_τ=－0.129±0.050±0.050 for this channel was obtained by using a sample of 8977 τ⁺τ^－ pairs collected near the peak of Z⁰ resonance. The neural network training method and some details are described.

References

[1]

A.Rouge,Tau decays as polarization analysis,Talk at the Workshop on Tau Physics,Orsay,France,Sep.24-27,1990.[2]K.Hagiwara et al.,Phys.Lett.B235（1990）198.[3]Foran Introduction,see,for example,P.Wasserman,Neural Computing:Theory and Practice（VanNostr and Reinhold,N.Y,1989）.[4]L.Lonnbladetal,LUTP90-8 and Nucl.Phys,B349（1991）675[5]L.Bellantoni et al.,Using Neura lNetwork with Jet Shape to Identify b Jets In e+e-Interactions,CERN-PPE/91-80.[6]Procedings of the Inter.Conf.on Computingin High Energy Physics'92,Annecy,France,CERN92-07,P639-677,and References There.[7]L3 Collaboration,B.Adeva et al.Nucl.Instr.and Meth,A289（1990）35.[8]O.Adrianietal,NuclI nstr.and Meth,A302（1991）53.[9]L3 Collaboration,B.Adeva et al,Z.Phys,C51（1991）179.[10]L3 Collaboration,B.Adeva et al,Phys.Lett.,B294（1992）466.[11]S.Jadachetal,CERN Report CERN-89-08,Vol.III,（1989）69.[12]V.Innocente,Y.F.Wang and Z.P.Zhang,Nucl.Instr.and Meth,A323（1992）647.

[1]	LONG Xia-Feng , LIU Yong-Gui . Investigation of Marx-PFN. Chinese Physics C, 2008, 32(S1): 274-276.
[2]	, , . Particle Identification using Artificial Neural Networks at BESIII. Chinese Physics C, 2008, 32(1): 1-8. doi: 10.1088/1674-1137/32/1/001
[3]	Selyuzhenkov . Λ-Hyperon Global Polarization in Au+Au Collisions at RHIC. Chinese Physics C, 2007, 31(12): 1185-1188.
[4]	GAO Jian-Hua . Global Quark Polarization in QGP in Non-central AA Collisions. Chinese Physics C, 2007, 31(12): 1181-1184.
[5]	ZHANG Kun-Shi , LIU Lian-Shou . On the Identification of Quark and Gluon Jets Using Artificial Neural Network Method. Chinese Physics C, 2004, 28(11): 1141-1145.
[6]	WANG Shun-Jin , GUO Yuan-Jun . Complementary Chaos and Spin Polarization Stability in Cyclotrons Studied from the Nonautonomous SU(2)Dynamical System. Chinese Physics C, 2003, 27(12): 1123-1127.
[7]	LIU Chun-Xiu , LIANG Zuo-Tang . Spin Transfer in High-Energy Hadronization Processes and Polarization of Hyperon in the Lepton-Induced Reactions. Chinese Physics C, 2001, 25(6): 476-486.
[8]	WANG Lan-FA , ZHANG Chuang . Study of Microwave Element and Accelerating StructureUsing Finite Element Method. Chinese Physics C, 2001, 25(12): 1219-1224.
[9]	Ma Weixing . Quark Polarization in Nucleon. Chinese Physics C, 1997, 21(10): 946-952.
[10]	Liang Hualou , Xie Wei , Ren Jingru , Wang Taijie , Dai Guiliang . Distinguishing Primary Cosmic-Ray Composition with Artificial Neural Networks. Chinese Physics C, 1997, 21(3): 205-210.
[11]	Zhang Ziping , Chen Hongfang , Ye Shuwei , Zhao Jiawei . Identification of e,μ,π by Neural Network in BES. Chinese Physics C, 1997, 21(4): 297-303.
[12]	Chen Guoming , Chen Gang . Identifying Tau Hadronic Decay with Neural Network. Chinese Physics C, 1995, 19(8): 692-702.
[13]	Huo Lei , Zhang Weining , Wang Shan , Liu Yiming . Absorption Correlation in Pion Interferometry Analyses. Chinese Physics C, 1994, 18(7): 630-636.
[14]	FENG Da-Chun , LIU Wen-Qin , MA Zhong-Yu . Analyses of Relativistic Optical Potential for Medium Energy Proton. Chinese Physics C, 1993, 17(4): 372-378.
[15]	LIU Chun , XING Zhi-Zhong . Hadronic Matrix Elements in the Cornell Potential Model. Chinese Physics C, 1991, 15(11): 997-1000.
[16]	CHEN Qi-Zhou , LI Zhi-Bing , HE Bao-Peng , LUO Xiang-Qian , GUO Shuo-Hong . THE WEAK INTERACTION MATRIX ELEMENTS OF │ΔS│=2 ON LATTICE. Chinese Physics C, 1988, 12(4): 459-464.
[17]	PEI Guo-Xi , ZHANG Wu , TIAN Bao-Ying , XU Jian-Ming . THE FINITE ELEMENT ANALYSIS OF EDDY-CURRENT FIELDS OF A C-TYPE SOLID YOKE BENDING MAGNET. Chinese Physics C, 1988, 12(1): 80-84.
[18]	JIA Qi-Ka , TANG Xiao-Wei , YANG Bao-Zhong , LI Yao-Qing , YE Jing-Bo . A MEASUREMENT OF THE LINEAR POLARIZATION OF PHOTONS EMITTED FROM THREE PHOTON ANNIHILATION OF POSITRONS & ELECTRONS. Chinese Physics C, 1987, 11(3): 293-299.
[19]	XU ZAI-XIN , JIANG YUAN-FANG . POLARIZATION EFFECTS IN LARGE-pr PROMPT PHOTON PRODUCTION. Chinese Physics C, 1983, 7(6): 694-701.
[20]	WU DAN-DI , WU JING-YUAN , LI XIAO-YUAN . AN ANALYSIS OF FOUR-ELEMENT MODELS OF LEPTONS AND NON-DIAGONAL NEUTRAL CURRENTS. Chinese Physics C, 1978, 2(1): 42-48.

Access

Get Citation

Zhang Ziping and Wang Yifang. Application of Neural Network in τ→ρV_τ Polarization Analysis[J]. Chinese Physics C, 1994, 18(9): 769-777.

Zhang Ziping and Wang Yifang. Application of Neural Network in τ→ρV_τ Polarization Analysis[J]. Chinese Physics C, 1994, 18(9): 769-777. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

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

Article Metric

Article Views(3878)
PDF Downloads(459)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Application of Neural Network in τ→ρV_τ Polarization Analysis

Zhang Ziping ^,
Wang Yifang

Corresponding author: Zhang Ziping,

Uni. of Science cud Technology of China, Hefei 2300262 Lab.for Nuclear Science, MIT, USA3 CERN and INFN-Sezione di Napoli, Italy

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1994-09-05

Abstract: An artificial neural network was built to select events in the τ→ρV_τ polarization analysis at LEP/L3, much better selection efficiency has been achieved.Detailed studies show that no systematic errors or bias have been introduced by the application of neural network. A polarization of P_τ=－0.129±0.050±0.050 for this channel was obtained by using a sample of 8977 τ⁺τ^－ pairs collected near the peak of Z⁰ resonance. The neural network training method and some details are described.