Title of article
Narrow resonances in effective field theory
Author/Authors
P.F. Bedaque، نويسنده , , H.-W. Hammer، نويسنده , , U. Van Kolck، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2003
Pages
9
From page
159
To page
167
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.
Keywords
Effective field theory , Narrow resonances
Journal title
PHYSICS LETTERS B
Serial Year
2003
Journal title
PHYSICS LETTERS B
Record number
917136
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