First measurement of the branching fraction of the decay ψ(2S)→τ+ τ-

J. Z. Bai; Y. Ban; J. G. Bian; I. Blum; A. D. Chen; H. F. Chen; H. S. Chen; J. Chen; J. C. Chen; X. D. Chen; Y. Chen; Y. B. Chen; B. S. Cheng; S. P. Chi; Y. P. Chu; J. B. Choi; X. Z. Cui; Y. S. Dai; L. Y. Dong; Z. Z. Du; W. Dunwoodie; H. Y. Fu; L. P. Fu; C. S. Gao; P. Gratton; S. D. Gu; Y. F. Gu; Y. N. Guo; Z. J. Guo; S. W. Han; Y. Han; F. A. Harris; J. He; J. T. He; K. L. He; M. He; X. He; T. Hong; Y. K. Heng; D. G. Hitlin; G. Y. Hu; H. M. Hu; Q. H. Hu; T. Hu; G. S. Huang; X. P. Huang; Y. Z. Huang; J. M. Izen; X. B. Ji; C. H. Jiang; Y. Jin; B. D. Jones; J. S. Kang; Z. J. Ke; M. H. Kelsey; B. K. Kim; H. J. Kim; S. K. Kim; T. Y. Kim; D. Kong; Y. F. Lai; A. Lankford; D. Li; H. B. Li; H. H. Li; J. Li; J. C. Li; P. Q. Li; Q. J. Li; R. Y. Li; W. Li; W. G. Li; X. N. Li; X. Q. Li; B. Liu; F. Liu; Feng Liu; H. M. Liu; J. Liu; J. P. Liu; T. R. Liu; R. G. Liu; Y. Liu; Z. X. Liu; X. C. Lou; B. Lowery; G. R. Lu; F. Lu; J. G. Lu; Z. J. Lu; X. L. Luo; E. C. Ma; J. M. Ma; R. Malchow; H. S. Mao; Z. P. Mao; X. C. Meng; X. H. Mo; J. Nie

doi:10.1103/PhysRevD.65.052004

First measurement of the branching fraction of the decay ψ(2S)→τ⁺ τ^-

J. Z. Bai, Y. Ban, J. G. Bian, I. Blum, A. D. Chen, H. F. Chen, H. S. Chen, J. Chen, J. C. Chen, X. D. Chen, Y. Chen, Y. B. Chen, B. S. Cheng, S. P. Chi, Y. P. Chu, J. B. Choi, X. Z. Cui, Y. S. Dai, L. Y. Dong, Z. Z. DuW. Dunwoodie, H. Y. Fu, L. P. Fu, C. S. Gao, P. Gratton, S. D. Gu, Y. F. Gu, Y. N. Guo, Z. J. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, J. T. He, K. L. He, M. He, X. He, T. Hong, Y. K. Heng, D. G. Hitlin, G. Y. Hu, H. M. Hu, Q. H. Hu, T. Hu, G. S. Huang, X. P. Huang, Y. Z. Huang, J. M. Izen, X. B. Ji, C. H. Jiang, Y. Jin, B. D. Jones, J. S. Kang, Z. J. Ke, M. H. Kelsey, B. K. Kim, H. J. Kim, S. K. Kim, T. Y. Kim, D. Kong, Y. F. Lai, A. Lankford, D. Li, H. B. Li, H. H. Li, J. Li, J. C. Li, P. Q. Li, Q. J. Li, R. Y. Li, W. Li, W. G. Li, X. N. Li, X. Q. Li, B. Liu, F. Liu, Feng Liu, H. M. Liu, J. Liu, J. P. Liu, T. R. Liu, R. G. Liu, Y. Liu, Z. X. Liu, X. C. Lou, B. Lowery, G. R. Lu, F. Lu, J. G. Lu, Z. J. Lu, X. L. Luo, E. C. Ma, J. M. Ma, R. Malchow, H. S. Mao, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie

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Abstract

The branching fraction of the ψ(2S) decay into τ⁺τ ^- has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is B_ττ=(2.710. 43±0.55)× 10^-3, where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e⁺e^- and μ⁺ μ^- of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance, the total width of the ψ(25) is determined to be (252±37) keV.

Original language	English
Article number	052004
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	65
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.65.052004
State	Published - 2002

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10.1103/PhysRevD.65.052004

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Bai, J. Z., Ban, Y., Bian, J. G., Blum, I., Chen, A. D., Chen, H. F., Chen, H. S., Chen, J., Chen, J. C., Chen, X. D., Chen, Y., Chen, Y. B., Cheng, B. S., Chi, S. P., Chu, Y. P., Choi, J. B., Cui, X. Z., Dai, Y. S., Dong, L. Y., ... Nie, J. (2002). First measurement of the branching fraction of the decay ψ(2S)→τ⁺ τ^-. Physical Review D - Particles, Fields, Gravitation and Cosmology, 65(5), Article 052004. https://doi.org/10.1103/PhysRevD.65.052004

@article{75e8135c1eee4921a65c2e454f21fb98,

title = "First measurement of the branching fraction of the decay ψ(2S)→τ+ τ-",

abstract = "The branching fraction of the ψ(2S) decay into τ+τ - has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is Bττ=(2.710. 43±0.55)× 10-3, where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e+e- and μ+ μ- of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance, the total width of the ψ(25) is determined to be (252±37) keV.",

author = "Bai, \{J. Z.\} and Y. Ban and Bian, \{J. G.\} and I. Blum and Chen, \{A. D.\} and Chen, \{H. F.\} and Chen, \{H. S.\} and J. Chen and Chen, \{J. C.\} and Chen, \{X. D.\} and Y. Chen and Chen, \{Y. B.\} and Cheng, \{B. S.\} and Chi, \{S. P.\} and Chu, \{Y. P.\} and Choi, \{J. B.\} and Cui, \{X. Z.\} and Dai, \{Y. S.\} and Dong, \{L. Y.\} and Du, \{Z. Z.\} and W. Dunwoodie and Fu, \{H. Y.\} and Fu, \{L. P.\} and Gao, \{C. S.\} and P. Gratton and Gu, \{S. D.\} and Gu, \{Y. F.\} and Guo, \{Y. N.\} and Guo, \{Z. J.\} and Han, \{S. W.\} and Y. Han and Harris, \{F. A.\} and J. He and He, \{J. T.\} and He, \{K. L.\} and M. He and X. He and T. Hong and Heng, \{Y. K.\} and Hitlin, \{D. G.\} and Hu, \{G. Y.\} and Hu, \{H. M.\} and Hu, \{Q. H.\} and T. Hu and Huang, \{G. S.\} and Huang, \{X. P.\} and Huang, \{Y. Z.\} and Izen, \{J. M.\} and Ji, \{X. B.\} and Jiang, \{C. H.\} and Y. Jin and Jones, \{B. D.\} and Kang, \{J. S.\} and Ke, \{Z. J.\} and Kelsey, \{M. H.\} and Kim, \{B. K.\} and Kim, \{H. J.\} and Kim, \{S. K.\} and Kim, \{T. Y.\} and D. Kong and Lai, \{Y. F.\} and A. Lankford and D. Li and Li, \{H. B.\} and Li, \{H. H.\} and J. Li and Li, \{J. C.\} and Li, \{P. Q.\} and Li, \{Q. J.\} and Li, \{R. Y.\} and W. Li and Li, \{W. G.\} and Li, \{X. N.\} and Li, \{X. Q.\} and B. Liu and F. Liu and Feng Liu and Liu, \{H. M.\} and J. Liu and Liu, \{J. P.\} and Liu, \{T. R.\} and Liu, \{R. G.\} and Y. Liu and Liu, \{Z. X.\} and Lou, \{X. C.\} and B. Lowery and Lu, \{G. R.\} and F. Lu and Lu, \{J. G.\} and Lu, \{Z. J.\} and Luo, \{X. L.\} and Ma, \{E. C.\} and Ma, \{J. M.\} and R. Malchow and Mao, \{H. S.\} and Mao, \{Z. P.\} and Meng, \{X. C.\} and Mo, \{X. H.\} and J. Nie",

year = "2002",

doi = "10.1103/PhysRevD.65.052004",

language = "English",

volume = "65",

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

issn = "0556-2821",

number = "5",

}

Bai, JZ, Ban, Y, Bian, JG, Blum, I, Chen, AD, Chen, HF, Chen, HS, Chen, J, Chen, JC, Chen, XD, Chen, Y, Chen, YB, Cheng, BS, Chi, SP, Chu, YP, Choi, JB, Cui, XZ, Dai, YS, Dong, LY, Du, ZZ, Dunwoodie, W, Fu, HY, Fu, LP, Gao, CS, Gratton, P, Gu, SD, Gu, YF, Guo, YN, Guo, ZJ, Han, SW, Han, Y, Harris, FA, He, J, He, JT, He, KL, He, M, He, X, Hong, T, Heng, YK, Hitlin, DG, Hu, GY, Hu, HM, Hu, QH, Hu, T, Huang, GS, Huang, XP, Huang, YZ, Izen, JM, Ji, XB, Jiang, CH, Jin, Y, Jones, BD, Kang, JS, Ke, ZJ, Kelsey, MH, Kim, BK, Kim, HJ, Kim, SK, Kim, TY, Kong, D, Lai, YF, Lankford, A, Li, D, Li, HB, Li, HH, Li, J, Li, JC, Li, PQ, Li, QJ, Li, RY, Li, W, Li, WG, Li, XN, Li, XQ, Liu, B, Liu, F, Liu, F, Liu, HM, Liu, J, Liu, JP, Liu, TR, Liu, RG, Liu, Y, Liu, ZX, Lou, XC, Lowery, B, Lu, GR, Lu, F, Lu, JG, Lu, ZJ, Luo, XL, Ma, EC, Ma, JM, Malchow, R, Mao, HS, Mao, ZP, Meng, XC, Mo, XH & Nie, J 2002, 'First measurement of the branching fraction of the decay ψ(2S)→τ⁺ τ^-', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 65, no. 5, 052004. https://doi.org/10.1103/PhysRevD.65.052004

TY - JOUR

T1 - First measurement of the branching fraction of the decay ψ(2S)→τ+ τ-

AU - Bai, J. Z.

AU - Ban, Y.

AU - Bian, J. G.

AU - Blum, I.

AU - Chen, A. D.

AU - Chen, H. F.

AU - Chen, H. S.

AU - Chen, J.

AU - Chen, J. C.

AU - Chen, X. D.

AU - Chen, Y.

AU - Chen, Y. B.

AU - Cheng, B. S.

AU - Chi, S. P.

AU - Chu, Y. P.

AU - Choi, J. B.

AU - Cui, X. Z.

AU - Dai, Y. S.

AU - Dong, L. Y.

AU - Du, Z. Z.

AU - Dunwoodie, W.

AU - Fu, H. Y.

AU - Fu, L. P.

AU - Gao, C. S.

AU - Gratton, P.

AU - Gu, S. D.

AU - Gu, Y. F.

AU - Guo, Y. N.

AU - Guo, Z. J.

AU - Han, S. W.

AU - Han, Y.

AU - Harris, F. A.

AU - He, J.

AU - He, J. T.

AU - He, K. L.

AU - He, M.

AU - He, X.

AU - Hong, T.

AU - Heng, Y. K.

AU - Hitlin, D. G.

AU - Hu, G. Y.

AU - Hu, H. M.

AU - Hu, Q. H.

AU - Hu, T.

AU - Huang, G. S.

AU - Huang, X. P.

AU - Huang, Y. Z.

AU - Izen, J. M.

AU - Ji, X. B.

AU - Jiang, C. H.

AU - Jin, Y.

AU - Jones, B. D.

AU - Kang, J. S.

AU - Ke, Z. J.

AU - Kelsey, M. H.

AU - Kim, B. K.

AU - Kim, H. J.

AU - Kim, S. K.

AU - Kim, T. Y.

AU - Kong, D.

AU - Lai, Y. F.

AU - Lankford, A.

AU - Li, D.

AU - Li, H. B.

AU - Li, H. H.

AU - Li, J.

AU - Li, J. C.

AU - Li, P. Q.

AU - Li, Q. J.

AU - Li, R. Y.

AU - Li, W.

AU - Li, W. G.

AU - Li, X. N.

AU - Li, X. Q.

AU - Liu, B.

AU - Liu, F.

AU - Liu, Feng

AU - Liu, H. M.

AU - Liu, J.

AU - Liu, J. P.

AU - Liu, T. R.

AU - Liu, R. G.

AU - Liu, Y.

AU - Liu, Z. X.

AU - Lou, X. C.

AU - Lowery, B.

AU - Lu, G. R.

AU - Lu, F.

AU - Lu, J. G.

AU - Lu, Z. J.

AU - Luo, X. L.

AU - Ma, E. C.

AU - Ma, J. M.

AU - Malchow, R.

AU - Mao, H. S.

AU - Mao, Z. P.

AU - Meng, X. C.

AU - Mo, X. H.

AU - Nie, J.

PY - 2002

Y1 - 2002

N2 - The branching fraction of the ψ(2S) decay into τ+τ - has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is Bττ=(2.710. 43±0.55)× 10-3, where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e+e- and μ+ μ- of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance, the total width of the ψ(25) is determined to be (252±37) keV.

AB - The branching fraction of the ψ(2S) decay into τ+τ - has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is Bττ=(2.710. 43±0.55)× 10-3, where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e+e- and μ+ μ- of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance, the total width of the ψ(25) is determined to be (252±37) keV.

UR - https://www.scopus.com/pages/publications/4243290672

U2 - 10.1103/PhysRevD.65.052004

DO - 10.1103/PhysRevD.65.052004

M3 - Article

AN - SCOPUS:4243290672

SN - 0556-2821

VL - 65

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

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

IS - 5

M1 - 052004

ER -

First measurement of the branching fraction of the decay ψ(2S)→τ⁺ τ^-

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