Resonances in coupled $\pi K -\eta K$ scattering from quantum chromodynamics - INSPIRE

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Resonances in coupled $\pi K -\eta K$ scattering from quantum chromodynamics

Hadron Spectrum

Collaboration

•

Jozef J. Dudek
(
- Jefferson Lab and
- Old Dominion U.
)

Jun 16, 2014

5 pages

Published in:

Phys.Rev.Lett. 113 (2014) 18, 182001

Published: Oct 30, 2014

e-Print:

1406.4158 [hep-ph]

DOI:

10.1103/PhysRevLett.113.182001

Report number:

JLAB-THY-14-1891,
DAMTP-2014-36

View in:

reference search199 citations

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Abstract: (APS)

Using a first-principles calculation within quantum chromodynamics, we are able to determine a pattern of strangeness=1 resonances that appear as complex singularities within coupled πK-ηK scattering amplitudes. We make use of numerical computation in the lattice discretized approach to the quantum field theory with light quark masses corresponding to mπ∼400 MeV and at a single lattice spacing. The energy dependence of scattering amplitudes is extracted through their relationship to the discrete spectrum in a finite volume, which we map out in unprecedented detail.

Note:

V3: version accepted for publication in PRL. A code bug which led to incorrect normalization of certain correlation functions is corrected - qualitative features of the results remain unchanged

14.40.Df
12.38.Gc
13.25.Es
scattering amplitude: energy dependence
spectrum: discrete
quantum chromodynamics
numerical calculations
finite size
singularity
scattering

References(26)

Figures(3)

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