Radiative decay of Υ into a scalar glueball -: art. no. 074015

被引：14
|
作者：
He, XG [1 ]
Jin, HY
Ma, JP
机构：
[1] Zhejiang Univ, Inst Modern Phys, Zhejiang, Peoples R China
[2] Natl Taiwan Univ, Dept Phys, Taipei, Taiwan
[3] Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
来源：
PHYSICAL REVIEW D | 2002年 / 66卷 / 07期
关键词：
D O I：
10.1103/PhysRevD.66.074015
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the radiative decay of Y into a scalar glueball Y-->gammaG(s) using QCD factorization. We find that for this process the nonperturbative effects can be factorized into a matrix element well defined in nonrelativistic QCD (NRQCD) and the gluon distribution amplitude. The same NRQCD matrix element appears also in the leptonic decay of Y and therefore can be determined from data. In the asymptotic limit the gluon distribution amplitude is known up to a normalization constant. Using a QCD sum-rule calculation for the normalization constant, we obtain Br(Y-->gammaG(s)) to be in the range (1-2)x10(-3). We also discuss some of the implications for Y-->gammaf(i) decays. Near future data from CLEO-III can provide crucial information about scalar glueball properties.
引用
收藏
页数：5
相关论文
共 50 条
  • [31] Investigation of radiative coupling and of enlarged decay rates of nuclear oscillators -: art. no. 043810
    Potzel, W
    van Bürck, U
    Schindelmann, P
    Kalvius, GM
    Smirnov, GV
    Gerdau, E
    Shvyd'ko, YV
    Rüter, HD
    Leupold, O
    PHYSICAL REVIEW A, 2001, 63 (04):
  • [32] Radiative decay of the ψ(2S) into two pseudoscalar mesons -: art. no. 032004
    Bai, JZ
    Ban, Y
    Bian, JG
    Blum, I
    Chen, AD
    Chen, GP
    Chen, HF
    Chen, HS
    Chen, J
    Chen, JC
    Chen, XD
    Chen, Y
    Chen, YB
    Cheng, BS
    Choi, JB
    Cui, XZ
    Ding, HL
    Dong, LY
    Du, ZZ
    Dunwoodie, W
    Gao, CS
    Gao, ML
    Gao, SQ
    Gratton, P
    Gu, JH
    Gu, SD
    Gu, WX
    Guo, YN
    Guo, ZJ
    Han, SW
    Han, Y
    Harris, FA
    He, J
    He, JT
    He, KL
    He, M
    Heng, YK
    Hitlin, DG
    Hu, GY
    Hu, HM
    Hu, JL
    Hu, QH
    Hu, T
    Huang, GS
    Huang, XP
    Huang, YZ
    Izen, JM
    Jiang, CH
    Jin, Y
    Jones, BD
    PHYSICAL REVIEW D, 2003, 67 (03):
  • [33] Rare radiative Bs → τ+ τ- γ decay in the two Higgs doublet model -: art. no. 034010
    Iltan, EO
    Turan, G
    PHYSICAL REVIEW D, 2000, 61 (03):
  • [34] Decay Ω-→Ξ-γ and the Ω-Ω-γ vertex -: art. no. 117301
    Queijeiro, A
    PHYSICAL REVIEW D, 1998, 58 (11):
  • [35] ω-ρ mixing and the ω→ππγ decay -: art. no. 017502
    Guetta, D
    Singer, P
    PHYSICAL REVIEW D, 2001, 63 (01)
  • [36] Coupling constants for scalar glueball decay
    Sexton, J
    Vaccarino, A
    Weingarten, D
    NUCLEAR PHYSICS B, 1996, : 128 - 135
  • [37] Measurement of decay parameters for Ξ-→Λπ- decay -: art. no. 031601
    Chakravorty, A
    Diehl, HT
    Duryea, J
    Guglielmo, G
    Heller, K
    Ho, PM
    James, C
    Johns, K
    Kaplan, DM
    Longo, MJ
    Luk, KB
    Rameika, R
    Rubin, HA
    Teige, S
    Thomson, GB
    Zou, Y
    PHYSICAL REVIEW LETTERS, 2003, 91 (03)
  • [38] Spin two glueball mass and glueball regge trajectory from supergravity -: art. no. 022
    Cáceres, E
    Amador, X
    JOURNAL OF HIGH ENERGY PHYSICS, 2004, (11):
  • [39] Glueball spectrum in O(a)-improved lattice QCD -: art. no. 034502
    Hart, A
    Teper, M
    PHYSICAL REVIEW D, 2002, 65 (03)
  • [40] Semileptonic D decay into scalar mesons:: A QCD sum rule approach -: art. no. 114002
    Dosch, HG
    Ferreira, EM
    Navarra, FS
    Nielsen, M
    PHYSICAL REVIEW D, 2002, 65 (11):
12345