A SENSITIVE METHOD TO DISTINGUISH THE SPIN OF THE HEAVY LEPTON <EM>τ </EM>FROM ITS TWO BODY DECAY ENERGY SPECTRA

WU JING-YUAN; CHEN ZHONG-MO; ZHANG ZI-XIAN

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> 1979, Vol. 3> Issue(1) : 67-74

A SENSITIVE METHOD TO DISTINGUISH THE SPIN OF THE HEAVY LEPTON τ FROM ITS TWO BODY DECAY ENERGY SPECTRA

Abstract
HTML
Reference
Related

PDF

Abstract：
We point out that in e⁺+e^-→τ⁺+τ^- for spin 3/2 τ^±the different helicity statesof τ^{^±}will possess different weights.When the beam energy is much larger than themass of τ,we argue that,in some renormalizable models,τ may even have only ±1/2 helieity states.Therefore,the two body d cay energy spectra will show a significantdifference from that of τ with spin 1/2.This provides us with a very sensitivemethod to distinguish the spin of τ.

References

[1]

J. Kirkby, Invited talk presented at the 1977 International Symposium on Lepton and Photon Interactions at High Energies, Hamburg, SLAG-PUB-2040.[2] K.Fujikawa and N. Nawamoto, Phys, Rev. Letters, 35 (1975), 1560.[3] 伍经无、李小源、陈中祺，高能物理与核物理，2 (1978), 286.[4] D. Lurie, "Particles and Fields ", Interecience, 1968.[5] T. D. Lee and C. N. Yang, Phys. Rev., 128 (1962), 885.[6] G.J. Komen. Phys. Letters. 68B (1977). 275.[7] T. D. Lee and G. C. Wick, Phys. Rev., D2 (1970), 1033.[8] H. Georgi and S. L. Glashow, Phys. Rev. Letters, 28 (1972), 1494.[9] PLUTO Collaboration, G. Alexander et al., Preprint, DESY 78/30.[10] G. J. Feldman, SLAC-PUB-2138 (1978).[11] Jasper Kirkby, SLAC-PUB-2127 (1978).[12] Y. S. Tsai, SLAC-PUB-2105 (1978).

[1]	YUE Cong-Xing , YU Dong-Qi . Neutral top-pion and the Lepton Flavor Violating Processes. Chinese Physics C, 2005, 29(11): 1027-1032.
[2]	LONG Jia-Li , HE Ze-Jun , JIANG Wei-Zhou , MA Yu-Gang , LIU Bo . Dileptons from a Chemically Non-equilibrated Quark-Gluon Plasma. Chinese Physics C, 2004, 28(4): 387-391.
[3]	LI Xin-Qiang , LU Gong-Ru , YANG Ya-Dong . Study of Two-Body Non-leptonic Charmless Bs→vv Decays within QCD Factorization. Chinese Physics C, 2004, 28(12): 1248-1255.
[4]	YUE Chong-Xing , ZHAO Ye , LI Hong , ZHAO Qi . Lepton Flavor Violating Z→l_il_jin Flavor-Universal Topcolor-Assisted Technicolor Models. Chinese Physics C, 2003, 27(12): 1070-1073.
[5]	YUE Chong-Xing , ZHANG Yan-Ming , LIU Lan-Jun . Z′and Lepton Flavor-Violation Tau Decays. Chinese Physics C, 2003, 27(7): 564-566.
[6]	LV Cai-Dian . Toward a Theory of Non-leptonic Two-Body B Decays in QCD. Chinese Physics C, 2002, 26(S1): 20-24.
[7]	BES Collaboration . Measurement of Inclusive Semileptonic Branching Fractions for D^－→e^－X and D⁰→e^－X. Chinese Physics C, 2002, 26(6): 547-556.
[8]	HE Ze-Jun , Zhou Wen-Jie , JIANG Wei-Zhou , ZHU Zhi-Yuan , LIU Bo . Enhancement of Dileptons with Intermediate Masses Produced in QGP. Chinese Physics C, 2001, 25(2): 179-182.
[9]	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.
[10]	LIU Bo , PENG GuangXiong , SHEN PengNian , HE ZeJun , CHEN Hong , MA WeiXing , ZHAO EnGuang , LU HongChao . Leptonic Decay and Radiative Transion of ψ′in Medium at Finite Temperature and Density. Chinese Physics C, 2000, 24(10): 969-973.
[11]	BES Collaboration . Determination of J/ψ Leptonic Branching Fraction Via ψ(2S)→π⁺π^－J/ψ. Chinese Physics C, 1996, 20(2): 97-106.
[12]	Shen Qixing , Yu Hong , Zhang Lin . Study of the Boson Resonance Produced in the Three-Step Two-Body Decay Process of J/ψ. Chinese Physics C, 1995, 19(1): 16-26.
[13]	BES Collaboration . Study of ψ(2S) Decay to τ Lepton Pairs. Chinese Physics C, 1995, 19(7): 577-584.
[14]	Hou Yunzhi . Symmetry for Semileptonic Decays of B-Baryons. Chinese Physics C, 1994, 18(9): 836-841.
[15]	Li Zuohong , Hou Yunzhi . Semileptonic B-Meson Decays in SU(3). Chinese Physics C, 1994, 18(8): 715-723.
[16]	SHEN Qi-Xing , YU Hong . Spin and parity analysis for the three-step two-body hadronic decay processes of J/ψ. Chinese Physics C, 1992, 16(3): 219-228.
[17]	LIU Yao-Yang . RADIATIVE DECAY OF Z⁰ AND HEAVY LEPTON. Chinese Physics C, 1985, 9(4): 505-507.
[18]	DONG FANC-XIAO , ZHOU XIAN-JIA , HUANG TAO , XUE PEI-YOU . SOME CONJECTURES ON LEPAONIC AND STRATON'IC SPECTRA. Chinese Physics C, 1979, 3(1): 127-130.
[19]	CHEN XIAO-SHU , ZHANG QING-YING . THE TWO-BODY SPIN-ORBIT COUPLING INTERACTION AND THE ENERGY SPECTRA OF f_7/2 SHELL NUCLEI. Chinese Physics C, 1979, 3(4): 454-458.
[20]	WU JING-YUAN , LI XIAO-YUAN , CHEN ZHONG-MO . THE DIFFICULTY OF THE DECAY τ→πν_τ AND SPIN 3/2 HEAVY LEPTON. Chinese Physics C, 1978, 2(3): 236-241.

Access

Get Citation

WU JING-YUAN, CHEN ZHONG-MO and ZHANG ZI-XIAN. A SENSITIVE METHOD TO DISTINGUISH THE SPIN OF THE HEAVY LEPTON τ FROM ITS TWO BODY DECAY ENERGY SPECTRA[J]. Chinese Physics C, 1979, 3(1): 67-74.

WU JING-YUAN, CHEN ZHONG-MO and ZHANG ZI-XIAN. A SENSITIVE METHOD TO DISTINGUISH THE SPIN OF THE HEAVY LEPTON τ FROM ITS TWO BODY DECAY ENERGY SPECTRA[J]. Chinese Physics C, 1979, 3(1): 67-74. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1978-05-17
Revised: 1900-01-01

Article Metric

Article Views(1636)
PDF Downloads(273)
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

A SENSITIVE METHOD TO DISTINGUISH THE SPIN OF THE HEAVY LEPTON τ FROM ITS TWO BODY DECAY ENERGY SPECTRA

Received Date: 1978-05-17
Accepted Date: 1900-01-01
Available Online: 1979-02-05

Abstract: We point out that in e⁺+e^-→τ⁺+τ^- for spin 3/2 τ^±the different helicity statesof τ^{^±}will possess different weights.When the beam energy is much larger than themass of τ,we argue that,in some renormalizable models,τ may even have only ±1/2 helieity states.Therefore,the two body d cay energy spectra will show a significantdifference from that of τ with spin 1/2.This provides us with a very sensitivemethod to distinguish the spin of τ.