Tag

Quark Antiquark Pairs

All articles tagged with #quark antiquark pairs

science5 months ago•38 min saved

Vacuum’s Hidden heft: researchers link real quarks to empty space

Physicists at Brookhaven’s RHIC used high-energy proton collisions to energize virtual quark–antiquark pairs in the quantum vacuum, turning them into real, spin‑correlated strange quark–antiquark pairs. The pairs’ spins remained aligned as they formed lambda hyperons, and were traced by the STAR detector, providing a direct link between vacuum fluctuations and observable matter and offering clues about how protons acquire most of their mass.

via Yahoo|

#entanglement #proton-mass #quantum-vacuum

physics3 years ago•4 min saved

Chiral symmetry restored at high matter density: new experimental evidence.

Researchers at the RIKEN Nishina Center for Accelerator-Based Science and other institutes worldwide have gathered experimental insights of the medium effects in nuclei at lower temperatures. They used spectroscopy techniques to measure the states of in (Sn) pionic atoms, bound systems consisting of a pion and atomic nucleus. The team set out to deduce the expected value of quark–antiquark pairs in the QCD vacuum by measuring pionic atoms at high densities and lower temperatures with high-precision spectroscopy techniques. The researchers found that their measurements were consistent with the spontaneous breakdown of the QCD vacuum's chiral symmetry described by Nambu's theory.

via Phys.org|

#chiral-symmetry #high-matter-density #physics