First evidence of Λ Λ̄ in ΧcJ decays

J. Z. Bai; Y. Ban; J. G. Bian; X. Cai; J. F. Chang; H. F. Chen; H. S. Chen; J. Chen; J. C. Chen; Y. B. Chen; S. P. Chi; Y. P. Chu; X. Z. Cui; Y. M. Dai; Y. S. Dai; L. Y. Dong; S. X. Du; Z. Z. Du; J. Fang; S. S. Fang; C. D. Fu; H. Y. Fu; L. P. Fu; C. S. Gao; M. L. Gao; Y. N. Gao; M. Y. Gong; W. X. Gong; S. D. Gu; Y. N. Guo; Y. Q. Guo; Z. J. Guo; S. W. Han; F. A. Harris; J. He; K. L. He; M. He; X. He; Y. K. Heng; T. Hong; H. M. Hu; T. Hu; G. S. Huang; L. Huang; X. P. Huang; X. B. Ji; C. H. Jiang; X. S. Jiang; D. P. Jin; S. Jin; Y. Jin; Z. J. Ke; Y. F. Lai; F. Li; G. Li; H. H. Li; J. Li; J. C. Li; K. Li; Q. J. Li; R. B. Li; R. Y. Li; W. Li; W. G. Li; X. Q. Li; X. S. Li; C. F. Liu; C. X. Liu; Fang Liu; F. Liu; H. M. Liu; J. B. Liu; J. P. Liu; R. G. Liu; Y. Liu; Z. A. Liu; Z. X. Liu; G. R. Lu; F. Lu; H. J. Lu; J. G. Lu; Z. J. Lu; X. L. Luo; E. C. Ma; F. C. Ma; J. M. Ma; Z. P. Mao; X. C. Meng; X. H. Mo; J. Nie; Z. D. Nie; S. L. Olsen; D. Paluselli; H. P. Peng; N. D. Qi; C. D. Qian; J. F. Qiu; G. Rong; D. L. Shen; H. Shen; X. Y. Shen; H. Y. Sheng; F. Shi; L. W. Song; H. S. Sun; S. S. Sun; Y. Z. Sun; Z. J. Sun; S. Q. Tang; X. Tang; D. Tian; Y. R. Tian; G. L. Tong; G. S. Varner; J. Wang; J. Z. Wang; L. Wang; L. S. Wang; M. Wang; Meng Wang; P. Wang; P. L. Wang; W. F. Wang; Y. F. Wang; Zhe Wang; Z. Wang; Zheng Wang; Z. Y. Wang; C. L. Wei; N. Wu; X. M. Xia; X. X. Xie; G. F. Xu; Y. Xu; S. T. Xue; M. L. Yan; W. B. Yan; G. A. Yang; H. X. Yang; J. Yang; S. D. Yang; M. H. Ye; Y. X. Ye; J. Ying; C. S. Yu; G. W. Yu; C. Z. Yuan; J. M. Yuan; Y. Yuan; Q. Yue; S. L. Zang; Y. Zeng; B. X. Zhang; B. Y. Zhang; C. C. Zhang; D. H. Zhang; H. Y. Zhang; J. Zhang; J. M. Zhang; J. W. Zhang; L. S. Zhang; Q. J. Zhang; S. Q. Zhang; X. Y. Zhang; Y. J. Zhang; Yiyun Zhang; Y. Y. Zhang; Z. P. Zhang; D. X. Zhao; Jiawei Zhao; J. W. Zhao; P. P. Zhao; W. R. Zhao; Y. B. Zhao; Z. G. Zhao; J. P. Zheng; L. S. Zheng; Z. P. Zheng; X. C. Zhong; B. Q. Zhou; G. M. Zhou; L. Zhou; N. F. Zhou; K. J. Zhu; Q. M. Zhu; Yingchun Zhu; Y. C. Zhu; Y. S. Zhu; Z. A. Zhu; B. A. Zhuang; B. S. Zou

doi:10.1103/PhysRevD.67.112001

First evidence of Λ Λ̄ in Χ_cJ decays

J. Z. Bai
, Y. Ban
, J. G. Bian
, X. Cai
, J. F. Chang
, H. F. Chen
, H. S. Chen
, J. Chen
, J. C. Chen
, Y. B. Chen
, S. P. Chi
, Y. P. Chu
, X. Z. Cui
, Y. M. Dai
, Y. S. Dai
, L. Y. Dong
, S. X. Du
, Z. Z. Du
, J. Fang
, S. S. Fang

C. D. Fu, H. Y. Fu, L. P. Fu, C. S. Gao, M. L. Gao, Y. N. Gao, M. Y. Gong, W. X. Gong, S. D. Gu, Y. N. Guo, Y. Q. Guo, Z. J. Guo, S. W. Han, F. A. Harris, J. He, K. L. He, M. He, X. He, Y. K. Heng, T. Hong, H. M. Hu, T. Hu, G. S. Huang, L. Huang, X. P. Huang, X. B. Ji, C. H. Jiang, X. S. Jiang, D. P. Jin, S. Jin, Y. Jin, Z. J. Ke, Y. F. Lai, F. Li, G. Li, H. H. Li, J. Li, J. C. Li, K. Li, Q. J. Li, R. B. Li, R. Y. Li, W. Li, W. G. Li, X. Q. Li, X. S. Li, C. F. Liu, C. X. Liu, Fang Liu, F. Liu, H. M. Liu, J. B. Liu, J. P. Liu, R. G. Liu, Y. Liu, Z. A. Liu, Z. X. Liu, G. R. Lu, F. Lu, H. J. Lu, J. G. Lu, Z. J. Lu, X. L. Luo, E. C. Ma, F. C. Ma, J. M. Ma, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie, Z. D. Nie, S. L. Olsen, D. Paluselli, H. P. Peng, N. D. Qi, C. D. Qian, J. F. Qiu, G. Rong, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, F. Shi, L. W. Song, H. S. Sun, S. S. Sun, Y. Z. Sun, Z. J. Sun, S. Q. Tang, X. Tang, D. Tian, Y. R. Tian, G. L. Tong, G. S. Varner, J. Wang, J. Z. Wang, L. Wang, L. S. Wang, M. Wang, Meng Wang, P. Wang, P. L. Wang, W. F. Wang, Y. F. Wang, Zhe Wang, Z. Wang, Zheng Wang, Z. Y. Wang, C. L. Wei, N. Wu, X. M. Xia, X. X. Xie, G. F. Xu, Y. Xu, S. T. Xue, M. L. Yan, W. B. Yan, G. A. Yang, H. X. Yang, J. Yang, S. D. Yang, M. H. Ye, Y. X. Ye, J. Ying, C. S. Yu, G. W. Yu, C. Z. Yuan, J. M. Yuan, Y. Yuan, Q. Yue, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. Y. Zhang, J. Zhang, J. M. Zhang, J. W. Zhang, L. S. Zhang, Q. J. Zhang, S. Q. Zhang, X. Y. Zhang, Y. J. Zhang, Yiyun Zhang, Y. Y. Zhang, Z. P. Zhang, D. X. Zhao, Jiawei Zhao, J. W. Zhao, P. P. Zhao, W. R. Zhao, Y. B. Zhao, Z. G. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, X. C. Zhong, B. Q. Zhou, G. M. Zhou, L. Zhou, N. F. Zhou, K. J. Zhu, Q. M. Zhu, Yingchun Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, B. A. Zhuang, B. S. Zou

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

The first observation of Χ_cJ (J=0,1,2) decays to ΛΛ̄ is reported using Ψ(2S) data collected with the Beijing Spectrometer detector at the Beijing Electron Positron Collider. The branching ratios are determined to be Β(Χ _c0→ΛΛ̄) = (4.7_-1.2 ^+1.3±1.0)×10^-4, Β(Χ _c1→ΛΛ̄)= (2.6_-09 ^+1.0±0.6) ×10^-4 and Β(Χ _c2→ΛΛ̄=(3.3_-1.3^+1.5 ±0.7)×10^-4. The results are compared with model predictions.

Original language	English
Article number	112001
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	67
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevD.67.112001
State	Published - 2003
Externally published	Yes

Access to Document

10.1103/PhysRevD.67.112001

Cite this

Bai, J. Z., Ban, Y., Bian, J. G., Cai, X., Chang, J. F., Chen, H. F., Chen, H. S., Chen, J., Chen, J. C., Chen, Y. B., Chi, S. P., Chu, Y. P., Cui, X. Z., Dai, Y. M., Dai, Y. S., Dong, L. Y., Du, S. X., Du, Z. Z., Fang, J., ... Zou, B. S. (2003). First evidence of Λ Λ̄ in Χ_cJ decays. Physical Review D - Particles, Fields, Gravitation and Cosmology, 67(11), Article 112001. https://doi.org/10.1103/PhysRevD.67.112001

@article{bad7c6c0c1414e659fd665e5ef2306df,

title = "First evidence of Λ {\=Λ} in ΧcJ decays",

abstract = "The first observation of ΧcJ (J=0,1,2) decays to Λ{\=Λ} is reported using Ψ(2S) data collected with the Beijing Spectrometer detector at the Beijing Electron Positron Collider. The branching ratios are determined to be Β(Χ c0→Λ{\=Λ}) = (4.7-1.2 +1.3±1.0)×10-4, Β(Χ c1→Λ{\=Λ})= (2.6-09 +1.0±0.6) ×10-4 and Β(Χ c2→Λ{\=Λ}=(3.3-1.3+1.5 ±0.7)×10-4. The results are compared with model predictions.",

author = "Bai, \{J. Z.\} and Y. Ban and Bian, \{J. G.\} and X. Cai and Chang, \{J. F.\} and Chen, \{H. F.\} and Chen, \{H. S.\} and J. Chen and Chen, \{J. C.\} and Chen, \{Y. B.\} and Chi, \{S. P.\} and Chu, \{Y. P.\} and Cui, \{X. Z.\} and Dai, \{Y. M.\} and Dai, \{Y. S.\} and Dong, \{L. Y.\} and Du, \{S. X.\} and Du, \{Z. Z.\} and J. Fang and Fang, \{S. S.\} and Fu, \{C. D.\} and Fu, \{H. Y.\} and Fu, \{L. P.\} and Gao, \{C. S.\} and Gao, \{M. L.\} and Gao, \{Y. N.\} and Gong, \{M. Y.\} and Gong, \{W. X.\} and Gu, \{S. D.\} and Guo, \{Y. N.\} and Guo, \{Y. Q.\} and Guo, \{Z. J.\} and Han, \{S. W.\} and Harris, \{F. A.\} and J. He and He, \{K. L.\} and M. He and X. He and Heng, \{Y. K.\} and T. Hong and Hu, \{H. M.\} and T. Hu and Huang, \{G. S.\} and L. Huang and Huang, \{X. P.\} and Ji, \{X. B.\} and Jiang, \{C. H.\} and Jiang, \{X. S.\} and Jin, \{D. P.\} and S. Jin and Y. Jin and Ke, \{Z. J.\} and Lai, \{Y. F.\} and F. Li and G. Li and Li, \{H. H.\} and J. Li and Li, \{J. C.\} and K. Li and Li, \{Q. J.\} and Li, \{R. B.\} and Li, \{R. Y.\} and W. Li and Li, \{W. G.\} and Li, \{X. Q.\} and Li, \{X. S.\} and Liu, \{C. F.\} and Liu, \{C. X.\} and Fang Liu and F. Liu and Liu, \{H. M.\} and Liu, \{J. B.\} and Liu, \{J. P.\} and Liu, \{R. G.\} and Y. Liu and Liu, \{Z. A.\} and Liu, \{Z. X.\} and Lu, \{G. R.\} and F. Lu and Lu, \{H. J.\} and Lu, \{J. G.\} and Lu, \{Z. J.\} and Luo, \{X. L.\} and Ma, \{E. C.\} and Ma, \{F. C.\} and Ma, \{J. M.\} and Mao, \{Z. P.\} and Meng, \{X. C.\} and Mo, \{X. H.\} and J. Nie and Nie, \{Z. D.\} and Olsen, \{S. L.\} and D. Paluselli and Peng, \{H. P.\} and Qi, \{N. D.\} and Qian, \{C. D.\} and Qiu, \{J. F.\} and G. Rong and Shen, \{D. L.\} and H. Shen and Shen, \{X. Y.\} and Sheng, \{H. Y.\} and F. Shi and Song, \{L. W.\} and Sun, \{H. S.\} and Sun, \{S. S.\} and Sun, \{Y. Z.\} and Sun, \{Z. J.\} and Tang, \{S. Q.\} and X. Tang and D. Tian and Tian, \{Y. R.\} and Tong, \{G. L.\} and Varner, \{G. S.\} and J. Wang and Wang, \{J. Z.\} and L. Wang and Wang, \{L. S.\} and M. Wang and Meng Wang and P. Wang and Wang, \{P. L.\} and Wang, \{W. F.\} and Wang, \{Y. F.\} and Zhe Wang and Z. Wang and Zheng Wang and Wang, \{Z. Y.\} and Wei, \{C. L.\} and N. Wu and Xia, \{X. M.\} and Xie, \{X. X.\} and Xu, \{G. F.\} and Y. Xu and Xue, \{S. T.\} and Yan, \{M. L.\} and Yan, \{W. B.\} and Yang, \{G. A.\} and Yang, \{H. X.\} and J. Yang and Yang, \{S. D.\} and Ye, \{M. H.\} and Ye, \{Y. X.\} and J. Ying and Yu, \{C. S.\} and Yu, \{G. W.\} and Yuan, \{C. Z.\} and Yuan, \{J. M.\} and Y. Yuan and Q. Yue and Zang, \{S. L.\} and Y. Zeng and Zhang, \{B. X.\} and Zhang, \{B. Y.\} and Zhang, \{C. C.\} and Zhang, \{D. H.\} and Zhang, \{H. Y.\} and J. Zhang and Zhang, \{J. M.\} and Zhang, \{J. W.\} and Zhang, \{L. S.\} and Zhang, \{Q. J.\} and Zhang, \{S. Q.\} and Zhang, \{X. Y.\} and Zhang, \{Y. J.\} and Yiyun Zhang and Zhang, \{Y. Y.\} and Zhang, \{Z. P.\} and Zhao, \{D. X.\} and Jiawei Zhao and Zhao, \{J. W.\} and Zhao, \{P. P.\} and Zhao, \{W. R.\} and Zhao, \{Y. B.\} and Zhao, \{Z. G.\} and Zheng, \{J. P.\} and Zheng, \{L. S.\} and Zheng, \{Z. P.\} and Zhong, \{X. C.\} and Zhou, \{B. Q.\} and Zhou, \{G. M.\} and L. Zhou and Zhou, \{N. F.\} and Zhu, \{K. J.\} and Zhu, \{Q. M.\} and Yingchun Zhu and Zhu, \{Y. C.\} and Zhu, \{Y. S.\} and Zhu, \{Z. A.\} and Zhuang, \{B. A.\} and Zou, \{B. S.\}",

year = "2003",

doi = "10.1103/PhysRevD.67.112001",

language = "English",

volume = "67",

journal = "Physical Review D - Particles, Fields, Gravitation and Cosmology",

issn = "0556-2821",

number = "11",

}

Bai, JZ, Ban, Y, Bian, JG, Cai, X, Chang, JF, Chen, HF, Chen, HS, Chen, J, Chen, JC, Chen, YB, Chi, SP, Chu, YP, Cui, XZ, Dai, YM, Dai, YS, Dong, LY, Du, SX, Du, ZZ, Fang, J, Fang, SS, Fu, CD, Fu, HY, Fu, LP, Gao, CS, Gao, ML, Gao, YN, Gong, MY, Gong, WX, Gu, SD, Guo, YN, Guo, YQ, Guo, ZJ, Han, SW, Harris, FA, He, J, He, KL, He, M, He, X, Heng, YK, Hong, T, Hu, HM, Hu, T, Huang, GS, Huang, L, Huang, XP, Ji, XB, Jiang, CH, Jiang, XS, Jin, DP, Jin, S, Jin, Y, Ke, ZJ, Lai, YF, Li, F, Li, G, Li, HH, Li, J, Li, JC, Li, K, Li, QJ, Li, RB, Li, RY, Li, W, Li, WG, Li, XQ, Li, XS, Liu, CF, Liu, CX, Liu, F, Liu, F, Liu, HM, Liu, JB, Liu, JP, Liu, RG, Liu, Y, Liu, ZA, Liu, ZX, Lu, GR, Lu, F, Lu, HJ, Lu, JG, Lu, ZJ, Luo, XL, Ma, EC, Ma, FC, Ma, JM, Mao, ZP, Meng, XC, Mo, XH, Nie, J, Nie, ZD, Olsen, SL, Paluselli, D, Peng, HP, Qi, ND, Qian, CD, Qiu, JF, Rong, G, Shen, DL, Shen, H, Shen, XY, Sheng, HY, Shi, F, Song, LW, Sun, HS, Sun, SS, Sun, YZ, Sun, ZJ, Tang, SQ, Tang, X, Tian, D, Tian, YR, Tong, GL, Varner, GS, Wang, J, Wang, JZ, Wang, L, Wang, LS, Wang, M, Wang, M, Wang, P, Wang, PL, Wang, WF, Wang, YF, Wang, Z, Wang, Z, Wang, Z, Wang, ZY, Wei, CL, Wu, N, Xia, XM, Xie, XX, Xu, GF, Xu, Y, Xue, ST, Yan, ML, Yan, WB, Yang, GA, Yang, HX, Yang, J, Yang, SD, Ye, MH, Ye, YX, Ying, J, Yu, CS, Yu, GW, Yuan, CZ, Yuan, JM, Yuan, Y, Yue, Q, Zang, SL, Zeng, Y, Zhang, BX, Zhang, BY, Zhang, CC, Zhang, DH, Zhang, HY, Zhang, J, Zhang, JM, Zhang, JW, Zhang, LS, Zhang, QJ, Zhang, SQ, Zhang, XY, Zhang, YJ, Zhang, Y, Zhang, YY, Zhang, ZP, Zhao, DX, Zhao, J, Zhao, JW, Zhao, PP, Zhao, WR, Zhao, YB, Zhao, ZG, Zheng, JP, Zheng, LS, Zheng, ZP, Zhong, XC, Zhou, BQ, Zhou, GM, Zhou, L, Zhou, NF, Zhu, KJ, Zhu, QM, Zhu, Y, Zhu, YC, Zhu, YS, Zhu, ZA, Zhuang, BA & Zou, BS 2003, 'First evidence of Λ Λ̄ in Χ_cJ decays', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 67, no. 11, 112001. https://doi.org/10.1103/PhysRevD.67.112001

TY - JOUR

T1 - First evidence of Λ Λ̄ in ΧcJ decays

AU - Bai, J. Z.

AU - Ban, Y.

AU - Bian, J. G.

AU - Cai, X.

AU - Chang, J. F.

AU - Chen, H. F.

AU - Chen, H. S.

AU - Chen, J.

AU - Chen, J. C.

AU - Chen, Y. B.

AU - Chi, S. P.

AU - Chu, Y. P.

AU - Cui, X. Z.

AU - Dai, Y. M.

AU - Dai, Y. S.

AU - Dong, L. Y.

AU - Du, S. X.

AU - Du, Z. Z.

AU - Fang, J.

AU - Fang, S. S.

AU - Fu, C. D.

AU - Fu, H. Y.

AU - Fu, L. P.

AU - Gao, C. S.

AU - Gao, M. L.

AU - Gao, Y. N.

AU - Gong, M. Y.

AU - Gong, W. X.

AU - Gu, S. D.

AU - Guo, Y. N.

AU - Guo, Y. Q.

AU - Guo, Z. J.

AU - Han, S. W.

AU - Harris, F. A.

AU - He, J.

AU - He, K. L.

AU - He, M.

AU - He, X.

AU - Heng, Y. K.

AU - Hong, T.

AU - Hu, H. M.

AU - Hu, T.

AU - Huang, G. S.

AU - Huang, L.

AU - Huang, X. P.

AU - Ji, X. B.

AU - Jiang, C. H.

AU - Jiang, X. S.

AU - Jin, D. P.

AU - Jin, S.

AU - Jin, Y.

AU - Ke, Z. J.

AU - Lai, Y. F.

AU - Li, F.

AU - Li, G.

AU - Li, H. H.

AU - Li, J.

AU - Li, J. C.

AU - Li, K.

AU - Li, Q. J.

AU - Li, R. B.

AU - Li, R. Y.

AU - Li, W.

AU - Li, W. G.

AU - Li, X. Q.

AU - Li, X. S.

AU - Liu, C. F.

AU - Liu, C. X.

AU - Liu, Fang

AU - Liu, F.

AU - Liu, H. M.

AU - Liu, J. B.

AU - Liu, J. P.

AU - Liu, R. G.

AU - Liu, Y.

AU - Liu, Z. A.

AU - Liu, Z. X.

AU - Lu, G. R.

AU - Lu, F.

AU - Lu, H. J.

AU - Lu, J. G.

AU - Lu, Z. J.

AU - Luo, X. L.

AU - Ma, E. C.

AU - Ma, F. C.

AU - Ma, J. M.

AU - Mao, Z. P.

AU - Meng, X. C.

AU - Mo, X. H.

AU - Nie, J.

AU - Nie, Z. D.

AU - Olsen, S. L.

AU - Paluselli, D.

AU - Peng, H. P.

AU - Qi, N. D.

AU - Qian, C. D.

AU - Qiu, J. F.

AU - Rong, G.

AU - Shen, D. L.

AU - Shen, H.

AU - Shen, X. Y.

AU - Sheng, H. Y.

AU - Shi, F.

AU - Song, L. W.

AU - Sun, H. S.

AU - Sun, S. S.

AU - Sun, Y. Z.

AU - Sun, Z. J.

AU - Tang, S. Q.

AU - Tang, X.

AU - Tian, D.

AU - Tian, Y. R.

AU - Tong, G. L.

AU - Varner, G. S.

AU - Wang, J.

AU - Wang, J. Z.

AU - Wang, L.

AU - Wang, L. S.

AU - Wang, M.

AU - Wang, Meng

AU - Wang, P.

AU - Wang, P. L.

AU - Wang, W. F.

AU - Wang, Y. F.

AU - Wang, Zhe

AU - Wang, Z.

AU - Wang, Zheng

AU - Wang, Z. Y.

AU - Wei, C. L.

AU - Wu, N.

AU - Xia, X. M.

AU - Xie, X. X.

AU - Xu, G. F.

AU - Xu, Y.

AU - Xue, S. T.

AU - Yan, M. L.

AU - Yan, W. B.

AU - Yang, G. A.

AU - Yang, H. X.

AU - Yang, J.

AU - Yang, S. D.

AU - Ye, M. H.

AU - Ye, Y. X.

AU - Ying, J.

AU - Yu, C. S.

AU - Yu, G. W.

AU - Yuan, C. Z.

AU - Yuan, J. M.

AU - Yuan, Y.

AU - Yue, Q.

AU - Zang, S. L.

AU - Zeng, Y.

AU - Zhang, B. X.

AU - Zhang, B. Y.

AU - Zhang, C. C.

AU - Zhang, D. H.

AU - Zhang, H. Y.

AU - Zhang, J.

AU - Zhang, J. M.

AU - Zhang, J. W.

AU - Zhang, L. S.

AU - Zhang, Q. J.

AU - Zhang, S. Q.

AU - Zhang, X. Y.

AU - Zhang, Y. J.

AU - Zhang, Yiyun

AU - Zhang, Y. Y.

AU - Zhang, Z. P.

AU - Zhao, D. X.

AU - Zhao, Jiawei

AU - Zhao, J. W.

AU - Zhao, P. P.

AU - Zhao, W. R.

AU - Zhao, Y. B.

AU - Zhao, Z. G.

AU - Zheng, J. P.

AU - Zheng, L. S.

AU - Zheng, Z. P.

AU - Zhong, X. C.

AU - Zhou, B. Q.

AU - Zhou, G. M.

AU - Zhou, L.

AU - Zhou, N. F.

AU - Zhu, K. J.

AU - Zhu, Q. M.

AU - Zhu, Yingchun

AU - Zhu, Y. C.

AU - Zhu, Y. S.

AU - Zhu, Z. A.

AU - Zhuang, B. A.

AU - Zou, B. S.

PY - 2003

Y1 - 2003

N2 - The first observation of ΧcJ (J=0,1,2) decays to ΛΛ̄ is reported using Ψ(2S) data collected with the Beijing Spectrometer detector at the Beijing Electron Positron Collider. The branching ratios are determined to be Β(Χ c0→ΛΛ̄) = (4.7-1.2 +1.3±1.0)×10-4, Β(Χ c1→ΛΛ̄)= (2.6-09 +1.0±0.6) ×10-4 and Β(Χ c2→ΛΛ̄=(3.3-1.3+1.5 ±0.7)×10-4. The results are compared with model predictions.

AB - The first observation of ΧcJ (J=0,1,2) decays to ΛΛ̄ is reported using Ψ(2S) data collected with the Beijing Spectrometer detector at the Beijing Electron Positron Collider. The branching ratios are determined to be Β(Χ c0→ΛΛ̄) = (4.7-1.2 +1.3±1.0)×10-4, Β(Χ c1→ΛΛ̄)= (2.6-09 +1.0±0.6) ×10-4 and Β(Χ c2→ΛΛ̄=(3.3-1.3+1.5 ±0.7)×10-4. The results are compared with model predictions.

UR - https://www.scopus.com/pages/publications/33750488112

U2 - 10.1103/PhysRevD.67.112001

DO - 10.1103/PhysRevD.67.112001

M3 - Article

AN - SCOPUS:33750488112

SN - 0556-2821

VL - 67

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 11

M1 - 112001

ER -

First evidence of Λ Λ̄ in Χ_cJ decays

Abstract

Access to Document

Other files and links

Fingerprint

Cite this