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Chinese Physics C> 2001, Vol. 25> Issue(9) : 807-811 

Hard Diffractive Production of J/ψ+γ in High Energy π-p Collisions

  •  Physics Department, Hebei Teachers' University,Shijiazhuang 050016, China2 Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China3 Department of physics, Shijazhuang Teachers' College, Shijiazhuang 050801, China

  • Based on the Ingelman-Schlein model for hard diffractive scattering and the factorization formalism of non-relativistic QCD for quarkonia production, we present a study of associated J/ψ+γ production through single Pomeron exchange approaching Tevertron energy region. It is found that the pT distribution of the cross section is sensitive to the color octet matrix elements. But the ratios of the inclusive production cross section to the single diffractive production cross section are not so. The ratios are sensitive to the product Dfg. The experimental mesurement of this process at the Tevetron would shed light on the nature of the Pomeron and test the diffractive hard scattering factorization.
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    [1] . Goulianos K .Phys.Rep.,1985,101:169 2. Ingelman G ,Schlein P E .Phys.Lett.,1985,B152:265 3. Derrick M et al.Z .Phys.,1995,C68:569;Phys.Lett.,1995,B356:129 4. Abe F et al.Phys.Rev.Lett.,1997,78:2698;79:2636 5. Wang Xiulian et al.High Energy Physics and Nuclear Physics 2001,7:621(in Chinese)(王秀莲等,高能物理与核物理,2001,7:621) 6. Goulianos K .Phys.Lett.,1995,B358:379 7. Beneke M,Kramer M .Phys.Rev.,1997,D55:R5269 8. Gluck M et al.Z .Phys.,1995,C67:4339. Gluck M et al.Z .Phys.,1992,C53:651

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DUAN Chun-Gui, WANG Xiu-Lian, HE Zhen-Min and GAO Yong-Hua. Hard Diffractive Production of J/ψ+γ in High Energy π-p Collisions[J]. Chinese Physics C, 2001, 25(9): 807-811.
DUAN Chun-Gui, WANG Xiu-Lian, HE Zhen-Min and GAO Yong-Hua. Hard Diffractive Production of J/ψ+γ in High Energy π-p Collisions[J]. Chinese Physics C, 2001, 25(9): 807-811. shu
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Received: 2000-10-30
Revised: 1900-01-01
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Hard Diffractive Production of J/ψ+γ in High Energy π-p Collisions

    Corresponding author: DUAN Chun-Gui,
  • Physics Department, Hebei Teachers' University,Shijiazhuang 050016, China2 Institute of High Energy Physics, The Chinese Academy of Sciences, Beijing 100039, China3 Department of physics, Shijazhuang Teachers' College, Shijiazhuang 050801, China
  • Received Date: 2000-10-30
  • Accepted Date: 1900-01-01
  • Available Online: 2001-09-05

Abstract: Based on the Ingelman-Schlein model for hard diffractive scattering and the factorization formalism of non-relativistic QCD for quarkonia production, we present a study of associated J/ψ+γ production through single Pomeron exchange approaching Tevertron energy region. It is found that the pT distribution of the cross section is sensitive to the color octet matrix elements. But the ratios of the inclusive production cross section to the single diffractive production cross section are not so. The ratios are sensitive to the product Dfg. The experimental mesurement of this process at the Tevetron would shed light on the nature of the Pomeron and test the diffractive hard scattering factorization.

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