Applicability of Perturbative QCD to Virtual Compton Scattering

  • We use pertubative QCD to calculate the cross sections of pion virtual Compton scattering. QCD running coupling constant and different pion distribution amplitudes are explored in detail. The “work point” is defined to determine when pQCD is applicable to exclusive processes. We show that pQCD begins to work at 10 GeV2. If we relax our constraint to a weak sense, the work point may be as low as 4 GeV2.
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SU Jian and MA Bo-Qiang. Applicability of Perturbative QCD to Virtual Compton Scattering[J]. Chinese Physics C, 2004, 28(2): 116-121.
SU Jian and MA Bo-Qiang. Applicability of Perturbative QCD to Virtual Compton Scattering[J]. Chinese Physics C, 2004, 28(2): 116-121. shu
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Received: 2003-05-22
Revised: 1900-01-01
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Applicability of Perturbative QCD to Virtual Compton Scattering

    Corresponding author: MA Bo-Qiang,
  • School of Physics,Peking University,Beijing 100871,China

Abstract: We use pertubative QCD to calculate the cross sections of pion virtual Compton scattering. QCD running coupling constant and different pion distribution amplitudes are explored in detail. The “work point” is defined to determine when pQCD is applicable to exclusive processes. We show that pQCD begins to work at 10 GeV2. If we relax our constraint to a weak sense, the work point may be as low as 4 GeV2.

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