Study of Λ decay parameter in J/ψ→ΛΛ decay

ZHONG Bin; PING Rong-Gang; XIAO Zhen-Jun

doi:10.1088/1674-1137/32/9/003

Chinese Physics C> 2008, Vol. 32> Issue(9) : 692-696 DOI: 10.1088/1674-1137/32/9/003

Study of Λ decay parameter in J/ψ→ΛΛ decay

Abstract
HTML
Reference
Related

PDF

Abstract：
The helicity amplitudes for J/ψ→ΛΛ and the relevant background decays are presented for measuring the Λ decay parameter α₊(Λ→pπ⁺) in J/ψ→ΛΛ . The Monte Carlo (MC) simulations based on the helicity amplitudes information are carried out. The likelihood fit method to determine the Λ decay parameter is presented. Based on the MC generated sample, the sensitivity of the measurement for α₊ has been estimated, which shows that the J/ψ→ΛΛ channel can be used to measure the Λ decay parameter α₊(Λ→pπ⁺) well.

References

[1]

. LEE T D, YANG C N. Phys. Rev., 1957, 108: 1645; LEET D, Steinberger J, Feinberg G et al. Phys. Rev., 1957,106: 13672. Particle Data Group. J. Phys. G, 2006, 33: 13. Tixier M H et al. Phys. Lett. B, 1988, 212: 5234. CHAN A W et al. Phys. Rev. D, 1988, 58: 0720025. Pais A. Phys. Rev. Lett., 1959, 3: 2426. Chauvat P et al. Phys. Lett. B, 1985, 163: 2737. Barnes P D et al. Phys. Rev. C, 1996, 54: 18778. CHEN H, PING R G. Phys. Rev. D, 2007, 76: 0360059. Ablikim M et al. (BES Collab.). Phys. Lett. B, 2006, 632:18110. Korner J G. Z. Phys. C, 1987, 33: 52911. Meyer Stuart L. Data Analysis for Scientists and Engineers.New York: John Wiley Sons, 1975. 331

[1]	Virendrasinh Kher , Ajay Kumar Rai . Spectroscopy and decay properties of charmonium. Chinese Physics C, 2018, 42(8): 083101. doi: 10.1088/1674-1137/42/8/083101
[2]	Chao-Yi Lü , P. Wang , Y. B. Dong , P. N. Shen , Z. Y. Zhang , D. M. Li . Phenomenological study on the decay widths of Υ(nS)→d^(2380)+X^. Chinese Physics C, 2018, 42(6): 064102. doi: 10.1088/1674-1137/42/6/064102
[3]	Lin-Feng Zhang , Xue-Wei Xia . Global α-decay study based on the mass table of the relativistic continuum Hartree-Bogoliubov theory. Chinese Physics C, 2016, 40(5): 054102. doi: 10.1088/1674-1137/40/5/054102
[4]	Xing-Dao Guo , Si-Run Xue , Hong-Wei Ke , Xue-Qian Li , Qiang Zhao . Study of the rare decay J/ψ→e⁺e^-φ. Chinese Physics C, 2016, 40(7): 073104. doi: 10.1088/1674-1137/40/7/073104
[5]	DONG Hai-Rong , FENG Feng , LI Hai-Bo . Lepton number violation in D meson decay. Chinese Physics C, 2015, 39(1): 013101. doi: 10.1088/1674-1137/39/1/013101
[6]	YANG Yue-Ling , HUANG Jin-Shu , LU Gong-Ru . Study of the η'→Ve⁺e^- decay with hidden local symmetry model. Chinese Physics C, 2015, 39(2): 023102. doi: 10.1088/1674-1137/39/2/023102
[7]	HENG Zong-Qiang , SHU Liang-Ping , MENG Ying , HU Ji-Gang , QIAN Jian-Fa . Competition between α-decay and β-decay for heavy andsuperheavy nuclei. Chinese Physics C, 2014, 38(12): 124101. doi: 10.1088/1674-1137/38/12/124101
[8]	XU Yuan-Guo , ZHOU Li-Hai , LI Bing-Zhong , WANG Ru-Min . Analysis of B_s→φμ⁺μ^- decay within supersymmetry. Chinese Physics C, 2013, 37(6): 063104. doi: 10.1088/1674-1137/37/6/063104
[9]	JIA Qi-Ka , LI He-Ting . Parameter study for enhanced high gain harmonic generation scheme. Chinese Physics C, 2011, 35(9): 880-884. doi: 10.1088/1674-1137/35/9/018
[10]	ZHOU Shu-Hua . Environmental al effects on nuclear decay rates. Chinese Physics C, 2011, 35(5): 449-452. doi: 10.1088/1674-1137/35/5/008
[11]	ZENG Ri-Hua , SCHUH Marcel , GERIGK Frank , WEGNER Rolf , PAN Wei-Min , WANG Guang-Wei , LIU Rong . HOM study and parameter calculation of the TESLA cavity model. Chinese Physics C, 2010, 34(1): 99-102. doi: 10.1088/1674-1137/34/1/018
[12]	XU Yuan-Guo , WANG Ru-Min , YANG Ya-Dong . Supersymmetric contributions to B_s→K^－π⁺ decay. Chinese Physics C, 2010, 34(11): 1687-1692. doi: 10.1088/1674-1137/34/11/003
[13]	LOU Jian-Ling , LI Zhi-Huan , YE Yan-Lin , JIANG Dong-Xing , HUA Hui , LI Xiang-Qing , ZHANG Shuang-Quan , ZHENG Tao , GE Yu-Cheng , KONG Zan , LI Chen , LU Fei , FAN Feng-Ying , LI Zhong-Yu , CAO Zhong-Xin , MA Li-Ying , XU Hu-Shan , HU Zheng-Guo , WANG Meng , LEI Xiang-Guo , DUAN Li-Min , XIAO Zhi-Gang , HUANG Tian-Heng , FU Fen , ZHANG Xue-Heng , ZHENG Chuan , YU Yu-Hong , TU Xiao-Lin , ZHANG Ya-Peng , YANG Yan-Yun , ZHANG Hong-Bin , TANG Bin , TIAN Yu-Lin , OUYANG Zhen , HUANG Mei-Rong , XU Zhi-Guo , YUE Ke , GAO Qi , . β-delayed neutron decay of ²¹N. Chinese Physics C, 2008, 32(S2): 41-43.
[14]	ZHU Wen-Han , ZHAO Yan-E , ZHANG Yun-Long , XU Zi-Zong , WANG Xiao-Lian . Experimental study of multi-photon contamination on the measurement offluorescent decay time. Chinese Physics C, 2008, 32(11): 912-915. doi: 10.1088/1674-1137/32/11/013
[15]	Zhang Yuhu , Y. Gono , A. Ferragut , K. Morita , C. B. Moon , A. Yoshida , T. Murakami , M. Nakajima , M. Ogawa , T. Morikawa , M. Oshima , H. Kusakari , M. Sugawara , K. Furono , T. Hayakawa , T. Komatsubara , J. Lu , S. J. Chae , J. C. Kim , B. J. Min . Study of High Spin Isomer and Its Decay Level Scheme of Doubly Odd ¹⁴⁴Pm Nucleus. Chinese Physics C, 1996, 20(S2): 121-128.
[16]	Chen Guoming , Chen Gang . Identifying τ Hadronic Decay with Neutral Network. Chinese Physics C, 1995, 19(S3): 247-256.
[17]	Shen Qixing , Yu Hong , Zhang Lin . Study of the Boson Resonance Produced in the Three-Step Two-Body Decay Process of/ψ. Chinese Physics C, 1995, 19(S1): 39-50.
[18]	Yu Hong , Shen Qixing . A Study on the Polarization Structure of J/ψ →ωf₂(1270) Decay Process. Chinese Physics C, 1992, 16(S3): 277-280.
[19]	BES Collaboration . Experimental Study of f₂(1270) in the J/ψ Hadronic Decay. Chinese Physics C, 1992, 16(S4): 385-393.
[20]	Fan Wo , Zhao Zhizheng , Sun Xiuron , Mu Wantong , Ma Jiayu , Yang Weifan , Xie Xiujun , Zhao Lili , Yu Jusheng . The ⁷³Br Decay. Chinese Physics C, 1988, 12(S2): 199-208.

Access

Get Citation

ZHONG Bin, PING Rong-Gang and XIAO Zhen-Jun. Study of Λ decay parameter in J/ψ→ΛΛ decay[J]. Chinese Physics C, 2008, 32(9): 692-696. doi: 10.1088/1674-1137/32/9/003

ZHONG Bin, PING Rong-Gang and XIAO Zhen-Jun. Study of Λ decay parameter in J/ψ→ΛΛ decay[J]. Chinese Physics C, 2008, 32(9): 692-696. doi: 10.1088/1674-1137/32/9/003 shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2007-12-03
Revised: 2008-01-21

Article Metric

Article Views(3093)
PDF Downloads(656)
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

Study of Λ decay parameter in J/ψ→ΛΛ decay

Corresponding author: ZHONG Bin,

Received Date: 2007-12-03

Accepted Date: 2008-01-21

Available Online: 2008-09-05

Abstract:

The helicity amplitudes for J/ψ→ΛΛ and the relevant background decays are presented for measuring the Λ decay parameter α₊(Λ→pπ⁺) in J/ψ→ΛΛ . The Monte Carlo (MC) simulations based on the helicity amplitudes information are carried out. The likelihood fit method to determine the Λ decay parameter is presented. Based on the MC generated sample, the sensitivity of the measurement for α₊ has been estimated, which shows that the J/ψ→ΛΛ channel can be used to measure the Λ decay parameter α₊(Λ→pπ⁺) well.

HTML

Reference (1)

Study of Λ decay parameter in J/ψ→ΛΛ decay

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article