DECAY π0→2γ IN THE MIT BAG MODEL

  • In this paper the MIT bag model and wave Packet Method are used to calculate the width of the process π0→2γ It is found that mπ→0 is a good approximation. The results are consistent with PCAC. The theoretical value of Γ(π0→2γ) is 2.7 times of the experimental value. The deviation is mainly from the calculation of Fπ. It is also found that the deviation strongly depends on the equation and the boundary contion of the MIT bag model.
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  • [1] T.Degrand, R. L. Jaffe, H. Johnson, and J. Kiskie, Phys. Rev., D12(1975), 2060[2] J.F. Donoghue and k. Johnson, Phys. Rev., D21(1980), 1975.[3] S.L. Adler, Phys. Rev., 177(1969), 2426.
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LI Bing-An. DECAY π0→2γ IN THE MIT BAG MODEL[J]. Chinese Physics C, 1984, 8(3): 279-284.
LI Bing-An. DECAY π0→2γ IN THE MIT BAG MODEL[J]. Chinese Physics C, 1984, 8(3): 279-284. shu
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Received: 1900-01-01
Revised: 1900-01-01
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DECAY π0→2γ IN THE MIT BAG MODEL

    Corresponding author: LI Bing-An,
  • Institute of High Energy Physics, Academia Sinica

Abstract: In this paper the MIT bag model and wave Packet Method are used to calculate the width of the process π0→2γ It is found that mπ→0 is a good approximation. The results are consistent with PCAC. The theoretical value of Γ(π0→2γ) is 2.7 times of the experimental value. The deviation is mainly from the calculation of Fπ. It is also found that the deviation strongly depends on the equation and the boundary contion of the MIT bag model.

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