Journal article
Mass splittings in a linear sigma model for multiflavor gauge theories
Physical review. D. Particles and fields, Vol.98(9), 094509
11/01/2018
DOI: 10.1103/PhysRevD.98.094509
Abstract
We calculate the tree-level mass spectrum for a linear sigma model describing the scalar and pseudoscalar mesons of a SU(3) local gauge theory with Dirac fermions in the fundamental representation. N1 fermions have a mass m1 and N2 a mass m2. Using recent lattice data with m1=m2 and N1+N2=8 or 12, we predict the mass splittings for m2=m1+δm. At first order in δm, an interesting inverted pattern appears in the 0++ sector, where mesons with lighter fermions are heavier. This feature could be tested in ongoing calculations provided that m1 and δm are sufficiently small. We discuss possible improvements of the approach.
Details
- Title: Subtitle
- Mass splittings in a linear sigma model for multiflavor gauge theories
- Creators
- Diego De FloorErik Gustafson - University of IowaYannick Meurice - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physical review. D. Particles and fields, Vol.98(9), 094509
- DOI
- 10.1103/PhysRevD.98.094509
- ISSN
- 2470-0010
- eISSN
- 2470-0029
- Publisher
- American Physical Society; Ithaca
- Grant note
- DOI: 10.13039/100000015, name: U.S. Department of Energy, award: DE-SC0010113
- Language
- English
- Date published
- 11/01/2018
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984429051902771
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