@Article{Husek_etal2019,
author="Husek, T.
and Goudzovski, E.
and Icampf, K.",
title="Precise Determination of the Branching Ratio of the Neutral-Pion Dalitz Decay",
journal="Physical Review Letters",
year="2019",
publisher="Amer Physical Soc",
volume="122",
number="2",
pages="022003--6pp",
abstract="We provide a new value for the ratio R = Gamma(pi(0) -> e(+)e(-)gamma(gamma))/Gamma(pi(0) -> gamma gamma) = 11.978(6) x 10(-3), which is by 2 orders of magnitude more precise than the current Particle Data Group average. It is obtained using the complete set of the next-to-leading-order radiative corrections in the QED sector, and incorporates up-to-date values of the pi(0)-transition-form-factor slope. The ratio R translates into the branching ratios of the two main pi(0) decay modes: B(pi(0) -> gamma gamma) = 98.8131(6){\%} and B(pi(0) -> e(+)e(-)gamma(gamma)) = 1.1836(6){\%}.",
optnote="WOS:000456041800006",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=3886), last updated on Sat, 02 Feb 2019 11:46:46 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.122.022003",
opturl="http://arxiv.org/abs/1809.01153",
opturl="https://doi.org/10.1103/PhysRevLett.122.022003",
archivePrefix="arXiv",
eprint="1809.01153",
language="English"
}