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Chinese Physics C> 2002, Vol. 26> Issue(8) : 747-752 

An Alternative Mechanism of Glueball Production in the J/ψ Radiative Decays

  •  Department of Physics,Peking University,Beijing 10087,China2 Department of Physics,Hebei Teachers'University,Shijiazhuang 050016,China3 Department of Physics,North china Electric Power University,Baoding 071003,China

  • Based on the physical implication of the unusually large mass scale and long live time characteristics of J/ψ particle and on the understanding of the requirement of glueball production,we proposed an alternative mechanism of glueball production in J/ψ radiative decay: the glueball Gb could be formed via fusion of a pair of constituent gluons which are emitted whenever the constituent charm quark and anti-quark in J/ψ transit into current charm quark and anti-quark,and remained current charm quark-pair annihilates into a photon. After a brief discussion of model parameters,we evaluate the partial width Γ J/ψ→Gb+γ,and compare it with the result from the mechanism where the glueball is produced via hadronazation of two emitted gluons in the J/ψ radiative decay.
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    [1] . Close F E, Farrar G, LI Z P. Phys. Rev.,1997,D55:5749 2. PENG H A, XU J S. Eur. Phys. J.,1999,C17:873. PENG H A, DUAN C G, YAN Z Y et al. High Energy Phys. and Nucl. Phys.,2002,26(7):658(in Chinese)(彭宏安,段春贵,阎占元等.高能物理与核物理,2002,26(7):658) 4. Altarelli G et al. Nucl. Phys.,1974,B69:531;Donnachie A, Landshoff P V, Nucl. Phys.,1976,B88:233;Hwa R C. Phys. Rev.,1980,D22:759 5. Berger E L, Jones D. Phys. Rev.,1981,D23:151;Baier R, Rukel R. Z. Phys.,1983,C19:2516. Landshoff P V, Nachtmann O. Z. Phys.,1987,C35:4057. Groom D E et al. Eur. Phys. J.,2000,C15:1 8. Landshoff P V. Donnachie A. Phys. Lett.,1988,B207:319

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PENG Hong-An, DUAN Chun-Gui, YAN Zhan-Yuan and HE Zhen-Min. An Alternative Mechanism of Glueball Production in the J/ψ Radiative Decays[J]. Chinese Physics C, 2002, 26(8): 747-752.
PENG Hong-An, DUAN Chun-Gui, YAN Zhan-Yuan and HE Zhen-Min. An Alternative Mechanism of Glueball Production in the J/ψ Radiative Decays[J]. Chinese Physics C, 2002, 26(8): 747-752. shu
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Received: 2002-02-06
Revised: 1900-01-01
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An Alternative Mechanism of Glueball Production in the J/ψ Radiative Decays

    Corresponding author: PENG Hong-An,
  • Department of Physics,Peking University,Beijing 10087,China2 Department of Physics,Hebei Teachers'University,Shijiazhuang 050016,China3 Department of Physics,North china Electric Power University,Baoding 071003,China
  • Received Date: 2002-02-06
  • Accepted Date: 1900-01-01
  • Available Online: 2002-08-05

Abstract: Based on the physical implication of the unusually large mass scale and long live time characteristics of J/ψ particle and on the understanding of the requirement of glueball production,we proposed an alternative mechanism of glueball production in J/ψ radiative decay: the glueball Gb could be formed via fusion of a pair of constituent gluons which are emitted whenever the constituent charm quark and anti-quark in J/ψ transit into current charm quark and anti-quark,and remained current charm quark-pair annihilates into a photon. After a brief discussion of model parameters,we evaluate the partial width Γ J/ψ→Gb+γ,and compare it with the result from the mechanism where the glueball is produced via hadronazation of two emitted gluons in the J/ψ radiative decay.

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