Document Type

Article

Publication Date

2016

DOI

10.1063/1.4949394

Publication Title

AIP Conference Proceedings

Volume

1735

Issue

1

Pages

030011 (1-6)

Abstract

In this talk, we present the first chiral extrapolation of a resonant scattering amplitude obtained from lattice QCD. Finite-volume spectra, determined by the Hadron Spectrum Collaboration at mπ = 236 MeV [1], for the isotriplet ππ channel are analyzed using the Lüscher method to determine the infinite-volume scattering amplitude. Unitarized Chiral Perturbation Theory is then used to extrapolate the scattering amplitude to the physical light quark masses. The viability of this procedure is demonstrated by its agreement with the experimentally determined scattering phase shift up to center-of-mass energies of 1.2 GeV. Finally, we analytically continue the amplitude to the complex plane to obtain the ρ-pole at [755(2)(1)(2002) - i/2 129(3)(1)(7/1)] MeV

Comments

© 2016

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in

Bolton, D. R., Briceño, R. A., & Wilson, D. J. (2016). From QCD to physical resonances. AIP Conference Proceedings, 1735(1), 1-6, Article 030011.

and may be found at https://doi.org/10.1063/1.4949394.

Original Publication Citation

Bolton, D. R., Briceño, R. A., & Wilson, D. J. (2016). From QCD to physical resonances. AIP Conference Proceedings, 1735(1), 1-6, Article 030011. https://doi.org/10.1063/1.4949394

ORCID

0000-0003-1109-1473 (Briceño)

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