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Dobado González, Antonio and Peláez Sagredo, José Ramón (1997) Inverse amplitude method in chiral perturbation theory. Physical Review D , 56 (5). pp. 30573073. ISSN 05562821

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Official URL: http://prd.aps.org/abstract/PRD/v56/i5/p3057_1
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http://prd.aps.org/  Publisher 
Abstract
Based on a dispersive approach, we apply the inverse amplitude method to unitarize oneloop SU(2) and SU(3) chiral perturbation theory. Numerically, we find that this unitarization technique yields the correct complex analytic structure in terms of cuts and poles. Indeed, using the chiral parameter estimates obtained from lowenergy experiments we obtain the poles associated with the p(770) and K*(982) resonances. Just by fixing their actual masses we obtain a parametrization of the pi pi and pi K phase shifts in eight different channels. With this fit we have then calculated several lowenergy phenomenological parameters estimating their errors. Among others, we have obtained the chiral parameters and scattering lengths, which can be relevant for future experiments.
Item Type:  Article 

Additional Information:  © 1997 The American Physical Society. 
Uncontrolled Keywords:  SymmetryBreaking Sector, PiPi Scattering, OneLoop, GevC, Equivalence Theorem, WeakInteractions, Standard Model, K Scattering, MomentumTransfer, 1/N Expansion 
Subjects:  Sciences > Physics 
ID Code:  22750 
Deposited On:  11 Sep 2013 14:17 
Last Modified:  12 Nov 2014 12:51 
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