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The Δ-resonance in a finite volume
- Source :
-
Nuclear Physics B . Jan2008, Vol. 788 Issue 1/2, p1-20. 20p. - Publication Year :
- 2008
-
Abstract
- Abstract: We study the extraction of Δ-resonance parameters from lattice data for small quark masses, corresponding to the case of an unstable Δ. To this end, we calculate the spectrum of the correlator of two Δ-fields in a finite Euclidean box up-to-and-including in the small scale expansion using infrared regularization. On the basis of our numerical study, we argue that the extraction of the parameters of the Δ-resonance (in particular, of the mass and the pion–nucleon–delta coupling constant) from the measured volume dependence of the lowest energy levels should be feasible. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 05503213
- Volume :
- 788
- Issue :
- 1/2
- Database :
- Academic Search Index
- Journal :
- Nuclear Physics B
- Publication Type :
- Academic Journal
- Accession number :
- 27242513
- Full Text :
- https://doi.org/10.1016/j.nuclphysb.2007.07.030