Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/131685
Title: | Precise determination of the I=2 ππ scattering length from mixed-action lattice QCD |
Author: | Beane, Silas R. Luu, Thomas C. Orginos, Kostas Parreño García, Assumpta Savage, Martin J. Torok, Aaron Walker-Loud, André NPLQCD Collaboration |
Keywords: | Física de partícules Interaccions d'hadrons Particle physics Hadron interactions |
Issue Date: | 14-Jan-2008 |
Publisher: | American Physical Society |
Abstract: | The I = 2 π π scattering length is calculated in fully dynamical lattice QCD with domain-wall valence quarks on the asqtad-improved coarse MILC configurations (with fourth-rooted staggered sea quarks) at four light-quark masses. Two- and three-flavor mixed-action chiral perturbation theory at next-to-leading order is used to perform the chiral and continuum extrapolations. At the physical charged pion mass, we find m π a I = 2 π π = − 0.043 30 ± 0.000 42 , where the error bar combines the statistical and systematic uncertainties in quadrature. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.77.014505 |
It is part of: | Physical Review D, 2008, vol. 77, num. 1, p. 014505 |
URI: | http://hdl.handle.net/2445/131685 |
Related resource: | https://doi.org/10.1103/PhysRevD.77.014505 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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588643.pdf | 277.22 kB | Adobe PDF | View/Open |
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