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Garcia-Martin, R and Kamiński, Robert and Peláez Sagredo, José Ramón (2009) Precise dispersive data analysis of the f_0(600) pole. International journal of modern physics A, 24 (2-mar). pp. 590-593. ISSN 0217-751X
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Official URL: http://dx.doi.org/10.1142/S0217751X09044140
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 sigma 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 show a remarkable improvement in the precision around the σ region. We also improve the matching between the parametrizations at low and intermediate energy of the S0 wave, and show that the effect of this on the sigma pole position is negligible.
Item Type: | Article |
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Additional Information: | ©World scientific publ co pte LTD. |
Uncontrolled Keywords: | Scattering; Roy's equations; Dispersion relations; Sigma; scalar mesons |
Subjects: | Sciences > Physics > Physics-Mathematical models Sciences > Physics > Mathematical physics |
ID Code: | 35182 |
Deposited On: | 22 Jan 2016 17:37 |
Last Modified: | 10 Dec 2018 15:09 |
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