The Role of the Roper in Chiral Perturbation Theory
The Role of the Roper in Chiral Perturbation Theory
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DOI：
10.1016/j.nuclphysa.2011.09.002
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发表时间：
2011-05
期刊：
影响因子：
--
通讯作者：
B. Long;U. V. Kolck
中科院分区：
文献类型：
--
作者：
B. Long;U. V. Kolck
We include the Roper excitation of the nucleon in a version of heavy-baryon chiral perturbation theory recently developed for energies around the delta resonance. We find significant improvement in the P{sub 11} channel.
