Otro
The role of the Roper in chiral perturbation theory
Registro en:
Nuclear Physics A. Amsterdam: Elsevier B.V., v. 870-71, p. 72-82, 2011.
0375-9474
10.1016/j.nuclphysa.2011.09.002
WOS:000296950900005
Autor
Long, Bingwei
van Kolck, U.
Resumen
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(11) channel. (C) 2011 Elsevier B.V. All rights reserved.