Low energy pion-nucleon scattering in the heavy baryon and infrared schemes

被引：29

作者：

Torikoshi, K ^{[1
]}

Ellis, PJ ^{[1
]}

机构：

[1] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA

来源：

PHYSICAL REVIEW C | 2003年 / 67卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.67.015208

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We study pion-nucleon scattering with a chiral Lagrangian of pions, nucleons, and Delta isobars to order Q(3), where Q is a generic small momentum. We compare the results from heavy baryon chiral perturbation theory with those from the infrared regularization scheme. While the former provides a reasonable fit to the data out to a pion c.m. kinetic energy of 100 MeV, the latter is only able to fit up to 40 MeV and even then the parameters obtained are unreasonable. Difficulties with the infrared scheme in the u channel are discussed.

引用

页码：152081 / 1520815

页数：15

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