@Article{Blanton_etal2020,
author="Blanton, T. D.
and Romero-Lopez, F.
and Sharpe, S. R.",
title="I=3 Three-Pion Scattering Amplitude from Lattice QCD",
journal="Physical Review Letters",
year="2020",
publisher="Amer Physical Soc",
volume="124",
number="3",
pages="032001--7pp",
abstract="We analyze the spectrum of two- and three-pion states of maximal isospin obtained recently for isosymmetric QCD with pion mass M approximate to 200 MeV in Horz and Hanlon, [Phys. Rev. Lett. 123, 142002 (2019)]. Using the relativistic three-particle quantization condition, we find similar to 2 sigma evidence for a nonzero value for the contact part of the 3 pi(+) (I = 3) scattering amplitude. We also compare our results to leading-order chiral perturbation theory. We find good agreement at threshold and some tension in the energy dependent part of the 3 pi(+) scattering amplitude. We also find that the 2 pi(+) (I = 2) spectrum is fit well by an s-wave phase shift that incorporates the expected Adler zero.",
optnote="WOS:000509506000002",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=4264), last updated on Fri, 07 Feb 2020 07:47:12 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.124.032001",
opturl="https://arxiv.org/abs/1909.02973",
opturl="https://doi.org/10.1103/PhysRevLett.124.032001",
language="English"
}