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The differential cross section for was measured from threshold to a centre-of-mass energy of 2090,MeV at forward angles at the BGOOD experiment. The high statistical precision and resolution in centre-of-mass energy and angle allows a detailed characterisation of this low-momentum transfer kinematic region. The data agree with a previous LEPS measurement and support effective Lagrangian models that indicate that the contact term dominates the cross section near threshold.

生成讲解博客的中文版本

生成AI智能校验的中文版本