Scalar mesons in three-flavor linear sigma models

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The three flavor linear sigma model is studied in order to understand the role of possible light scalar mesons in the pi-pi, pi-K and pi-eta elastic scattering channels. The K-matrix prescription is used to unitarize tree-level amplitudes and, with a sufficiently general model, we obtain reasonable ts to the experimental data. The effect of unitarization is very important and leads to the emergence of a nonet of light scalars, with masses below 1 GeV. We compare with a scattering treatment using a more general non-linear sigma model approach and also comment upon how our results t in with the scalar ... continued below

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256 Kilobytes pages

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Black, Deirdre; Fariborz, Amir H.; Moussa, Sherif; Nasri, Salah & Schrechter, Joseph September 2001.

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The three flavor linear sigma model is studied in order to understand the role of possible light scalar mesons in the pi-pi, pi-K and pi-eta elastic scattering channels. The K-matrix prescription is used to unitarize tree-level amplitudes and, with a sufficiently general model, we obtain reasonable ts to the experimental data. The effect of unitarization is very important and leads to the emergence of a nonet of light scalars, with masses below 1 GeV. We compare with a scattering treatment using a more general non-linear sigma model approach and also comment upon how our results t in with the scalar meson puzzle. The latter involves a preliminary investigation of possible mixing between scalar nonets.

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256 Kilobytes pages

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  • Chiral Fluctuations in Hadronic Matter workshop, Orsay (FR), 09/26/2001--09/28/2001

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  • Report No.: JLAB-THY-01-34
  • Report No.: DOE/ER/40150-2028
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 792662
  • Archival Resource Key: ark:/67531/metadc742946

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  • September 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 9:44 p.m.

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Black, Deirdre; Fariborz, Amir H.; Moussa, Sherif; Nasri, Salah & Schrechter, Joseph. Scalar mesons in three-flavor linear sigma models, article, September 2001; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc742946/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.