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

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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.

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[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

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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

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

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通讯作者: 陈斌, bchen63@163.com

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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.

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

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