2born (2born) wrote,

Нобелевка Намбу, сигма-мезон и масса видимой материи

Nambu's Nobel Prize, the $σ$ meson and the mass of visible matter: http://arxiv.org/abs/1403.7804

The electroweak Higgs boson has been discovered in ongoing experiments at the LHC, leading to a mass of this particle of 126 GeV. This Higgs boson mediates the generation of mass for elementary particles, including the mass of elementary (current) quarks. These current-quark masses leave 98% of the mass of the atom unexplained. This large fraction is mediated by strong interaction, where instead of the Higgs boson the $\sigma$ meson is the mediating particle. Though already discovered in 1957 by Schwinger, the $\sigma$ meson has been eliminated from many theories of hadron properties because it had not been observed and was doubted to exist. With the observation of the $\sigma$ meson in recent experiments on Compton scattering by the nucleon at MAMI (Mainz) it has become timely to review the status of experimental and theoretical researches on this topic.
Comments:19 pages, 2 figures, topical review
Tags: Мегаучебник или Что я читал и похвалил, наука, разгребая arXiv'ы

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