The role of the Roper in chiral perturbation theory

Bingwei Long, U. van Kolck

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


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 P11 channel.

Original languageEnglish (US)
Pages (from-to)72-82
Number of pages11
JournalNuclear Physics A
Issue number1
StatePublished - Nov 2011


  • Chiral perturbation theory
  • Effective field theory
  • The Roper resonance

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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