Study of (Λ)over-bar decay parameter in J/ψ → Λ(Λ)over-bar decay

被引：5
|
作者：
Zhong Bin [1 ,2 ,3 ]
Ping Rong-Gang [3 ]
Xiao Zhen-Jun [1 ,2 ]
机构：
[1] Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China
[2] Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210097, Peoples R China
[3] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS C | 2008年 / 32卷 / 09期
基金：
中国国家自然科学基金;
关键词：
parity asymmetry; hyperon nonleptonic decays; J/psi decays;
D O I：
10.1088/1674-1137/32/9/003
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The helicity amplitudes for J/psi -> Lambda(Lambda) over bar and the relevant background decays are presented for measuring the Lambda decay parameter alpha(+)((Lambda) over bar Lambda -> (p) over bar pi(+)) in J/psi -> Lambda(Lambda) over bar. The Monte Carlo (MC) simulations based on the helicity amplitudes information are carried out. The likelihood fit method to determine the (Lambda) over bar decay parameter is presented. Based on the MC generated sample, the sensitivity of the measurement for alpha(+) has been estimated, which shows that the J/psi Lambda(Lambda) over bar channel can be used to measure the (Lambda) over bar decay parameter alpha(+) ((Lambda) over bar -> (p) over bar pi(+)) well.
引用
收藏
页码：692 / 696
页数：5
相关论文
共 50 条
  • [1] Study of Λ-(Λ)over-bar oscillation in quantum coherent Λ(Λ)over-bar by using J/ψ → Λ(Λ)over-bar decay
    Kang, Xian-Wei
    Li, Hai-Bo
    Lu, Gong-Ru
    PHYSICAL REVIEW D, 2010, 81 (05):
  • [2] Measurement of the asymmetry parameter for the decay (Λ)over-bar → (p)over-barπ+
    Ablikim, M.
    Bai, J. Z.
    Bai, Y.
    Ban, Y.
    Cai, X.
    Chen, H. F.
    Chen, H. S.
    Chen, H. X.
    Chen, J. C.
    Chen, Jin
    Chen, X. D.
    Chen, Y. B.
    Chu, Y. P.
    Dai, Y. S.
    Deng, Z. Y.
    Du, S. X.
    Fang, J.
    Fu, C. D.
    Gao, C. S.
    Gao, Y. N.
    Gu, S. D.
    Gu, Y. T.
    Guo, Y. N.
    Guo, Z. J.
    Harris, F. A.
    He, K. L.
    He, M.
    Heng, Y. K.
    Hu, H. M.
    Hu, T.
    Huang, G. S.
    Huang, X. T.
    Huang, Y. P.
    Ji, X. B.
    Jiang, X. S.
    Jiao, J. B.
    Jin, D. P.
    Jin, S.
    Li, G.
    Li, H. B.
    Li, J.
    Li, L.
    Li, R. Y.
    Li, W. D.
    Li, W. G.
    Li, X. L.
    Li, X. N.
    Li, X. Q.
    Liang, Y. F.
    Liu, B. J.
    PHYSICAL REVIEW D, 2010, 81 (01):
  • [3] The rare decay η→π+π-ν(ν)over-bar
    Fäldt, G
    Shabalin, E
    PHYSICA SCRIPTA, 2003, 68 (05) : 348 - 351
  • [4] Λ(Λ)over-bar,Λ(Λ)over-bar-γ and Λ(Λ)over-bar-π0 productions in J/ψ decay
    Bai, JZ
    Bian, JG
    Chai, ZW
    Chen, GP
    Chen, HF
    Chen, JC
    Chen, SM
    Chen, YQ
    Chen, Y
    Chen, YB
    Cheng, BS
    Cui, XZ
    Ding, HL
    Du, ZZ
    Fan, XL
    Fang, J
    Gao, CS
    Gao, ML
    Gao, SQ
    Gu, JH
    Gu, SD
    Gu, WX
    Gu, YF
    Guo, YA
    Han, SW
    Han, Y
    He, JT
    He, J
    He, M
    Hu, GY
    Hu, JL
    Hu, QH
    Hu, T
    Hu, XQ
    Huang, XP
    Huang, YZ
    Jiang, CH
    Jin, S
    Jin, Y
    Kang, SH
    Ke, ZJ
    Lai, YF
    Lan, HB
    Lang, PF
    Li, J
    Li, PQ
    Li, Q
    Li, RB
    Li, W
    Li, WD
    HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION, 1998, 22 (02): : 97 - 105
  • [5] Study of (B)over-bar → Λ(p)over-barρ(φ) and (B)over-bar →Λ(Λ)over-bar(K)over-bar
    Geng, C. Q.
    Hsiao, Y. K.
    PHYSICAL REVIEW D, 2012, 85 (01)
  • [6] Near threshold p(p)over-bar enhancement in the J/ψ→ωp(p)over-bar decay
    Haidenbauer, J.
    Meissner, Ulf-G.
    Sibirtsev, A.
    PHYSICS LETTERS B, 2008, 666 (04) : 352 - 354
  • [7] Observation of the Ξ0 → Σ+ μ-(ν)over-barμ decay
    Gomes, RA
    NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2005, 142 : 16 - 20
  • [8] Entanglement in joint Λ(Λ)over-bar decay
    Faldt, Goran
    EUROPEAN PHYSICAL JOURNAL A, 2015, 51 (07):
  • [9] Study of J/ψ→p(p)over-bar,Λ(Λ)over-bar and observation of ηc→Λ(Λ)over-bar at Belle
    Wu, C. -H.
    Wang, M. -Z.
    Abe, K.
    Adachi, I.
    Aihara, H.
    Aulchenko, V.
    Aushev, T.
    Bahinipati, S.
    Bakich, A. M.
    Balagura, V.
    Bay, A.
    Belous, K.
    Bitenc, U.
    Bizjak, I.
    Blyth, S.
    Bondar, A.
    Bozek, A.
    Browder, T. E.
    Chao, Y.
    Chen, A.
    Chen, W. T.
    Cheon, B. G.
    Choi, Y.
    Choi, Y. K.
    Chuvikov, A.
    Cole, S.
    Dalseno, J.
    Danilov, M.
    Dash, M.
    Eidelman, S.
    Gabyshev, N.
    Gershon, T.
    Go, A.
    Gokhroo, G.
    Gorisek, A.
    Ha, H.
    Haba, J.
    Hayasaka, K.
    Hayashii, H.
    Hazumi, M.
    Heffernan, D.
    Hokuue, T.
    Hou, S.
    Hou, W. -S.
    Hsiung, Y. B.
    Iijima, T.
    Inami, K.
    Ishikawa, A.
    Itoh, R.
    Iwasaki, M.
    PHYSICAL REVIEW LETTERS, 2006, 97 (16)
  • [10] Strong decay modes (K)over-barΞ and (K)over-barΞπ of the Ω(2012) in the (K)over-barΞ(1530) and ηΩ molecular scenario
    Huang, Yin
    Liu, Ming-Zhu
    Lu, Jun-Xu
    Xie, Ju-Jun
    Geng, Li-Sheng
    PHYSICAL REVIEW D, 2018, 98 (07)
12345