Another look at pi pi scattering in the scalar channel
Another look at pi pi scattering in the scalar channel
复制标题
再看一下标量通道中的 pi pi 散射
DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
K. Hikasa
中科院分区:
文献类型:
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作者:
K. Igi;K. Hikasa
We set up a general framework to describe $\pi\pi$ scattering below 1 GeV based on chiral low-energy expansion with possible spin-0 and 1 resonances. Partial wave amplitudes are obtained with the $N/D$ method, which satisfy unitarity, analyticity and approximate crossing symmetry. Comparison with the phase shift data in the J=0 channel favors a scalar resonance near the $\rho$ mass.