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Garcia Martin, R. and Kamiński, Robert and Peláez Sagredo, José Ramón (2008) Precise determination of the σ pole location from a dispersive analysis. In Scadron70: Workshop on Scalar Mesons and Related Topics: honoring Michael D. Scadron's 70th birthday. AIP Conference Proceedings (1030). Amer Inst Physics. ISBN 978-0-7354-0554-7
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Official URL: http://dx.doi.org/10.1063/1.2973510
Abstract
We review how the use of recent precise data on kaon decays together with forward dispersion relations (FDR) and Roy’s equations allow us to determine the σ resonance pole position very precisely, by using only experimental input. In addition, we present preliminary results for a modified set of Roy-like equations with only one subtraction, that showaremarkable improvement in the precision around the σ region. For practical applications, these results are shown to be very well approximated by a very simple conformal expansion
Item Type: | Book Section |
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Additional Information: | ISSN: 0094-243X |
Uncontrolled Keywords: | Roy's equations; Dispersion relations; Sigma; Scalar Mesons; Meson-meson scattering |
Subjects: | Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics |
ID Code: | 35287 |
Deposited On: | 27 Jan 2016 17:28 |
Last Modified: | 10 Dec 2018 15:09 |
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