High Mass Photon Pair Production in Hadronic Collisions : Continuum and Charmonium

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概要

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• A whole picture of hadro-produced direct γγ with high invariant mass is presented in the parton model. The formula which includes primordial k_T is given and we examine its effect. Magnitude of the direct photon pair production cross section is large compared with the theoretical cross section as well as the experimental one for the muon pair production. The approximate scaling works up to the center of mass energy of 1 TeV. The beam ratio versus invariant mass of the photon pair is shown, this measurement being a test of charge ratio between up and down quarks. The overall angular distribution, which depends largely on the quark mass in the forward and backward region, is exhibited. A stress is put on the result that the large η_c signal above the continuum γγ can be expected. A comparison of our results with the data reported by a Fermilab group is shown.

• 理論物理学刊行会の論文
• 1981-07-25

著者

• HEMMI Shigeru

  Department of Physics, Hiroshima University

• Hemmi Shigeru

  Department Of Physics Hiroshima University

関連論文

• Quark Jet Model and Total Cross Section in Photon-Nucleon Scattering
• Scaling and Quark Mass Dependence of Two Real Photons with High Invariant Mass in Hadron-Hadron Collisions
• Coloron Model of ψ (or J) Particles
• Colorons and New Particles
• Spectral Function Sum Rules and Situation of Axial Vector Mesons
• High Mass Photon Pair Production in Hadronic Collisions : Continuum and Charmonium

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