Narrow resonances in effective field theory

P. F. Bedaque, H. W. Hammer, Ubirajara Van Kolck

Research output: Contribution to journalArticle

114 Citations (Scopus)

Abstract

We discuss the power counting for effective field theories with narrow resonances near a two-body threshold. Close to threshold, the effective field theory is perturbative and only one combination of coupling constants is fine-tuned. In the vicinity of the resonance, a second, "kinematic" fine-tuning requires a nonperturbative resummation. We illustrate our results in the case of nucleon-alpha scattering.

Original languageEnglish (US)
Pages (from-to)159-167
Number of pages9
JournalPhysics Letters B
Volume569
Issue number3-4
DOIs
StatePublished - Sep 11 2003

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thresholds
counting
kinematics
tuning
scattering

Keywords

  • Effective field theory
  • Narrow resonances

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Narrow resonances in effective field theory. / Bedaque, P. F.; Hammer, H. W.; Van Kolck, Ubirajara.

In: Physics Letters B, Vol. 569, No. 3-4, 11.09.2003, p. 159-167.

Research output: Contribution to journalArticle

Bedaque, P. F. ; Hammer, H. W. ; Van Kolck, Ubirajara. / Narrow resonances in effective field theory. In: Physics Letters B. 2003 ; Vol. 569, No. 3-4. pp. 159-167.
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