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Improved unitarized heavy baryon chiral perturbation theory for π N scattering to fourth order

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Gómez Nicola, Ángel and Nieves, J. and Peláez Sagredo, José Ramón and Ruiz Arriola, E. (2004) Improved unitarized heavy baryon chiral perturbation theory for π N scattering to fourth order. Physical review D, 69 (7). ISSN 0556-2821

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Official URL: http://dx.doi.org/10.1103/PhysRevD.69.076007


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Abstract

We extend our previous analysis of the unitarized pion-nucleon scattering amplitude including up to fourth order terms in heavy baryon chiral perturbation theory. We pay special attention to the stability of the generated Delta(1232) resonance, the convergence problems, and the power counting of the chiral parameters.


Item Type:Article
Additional Information:

© 2004 The American Physical Society.
This work was supported in part by funds provided by the Spanish DGI with Grant Nos. FM2002-03218, BFM2000- 1326 and BFM2002-01003; CICYT Grant No. FPA2000- 0956; Junta de Andalucía Grant No. FQM-225 and EURIDICE with contract number HPRN-CT-2002-00311.

Uncontrolled Keywords:Nucleon scattering
Subjects:Sciences > Physics > Physics-Mathematical models
Sciences > Physics > Mathematical physics
ID Code:30490
Deposited On:29 May 2015 07:56
Last Modified:10 Dec 2018 15:09

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