CP violation in B mesons

CP violation in B mesons

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Credit: SLAC/SCIENCE PHOTO LIBRARY

Caption: Evidence of CP violation in B meson decays at the BaBar detector at SLAC, the Stanford Linear Accelerator Center, California. The computer display shows BaBar in cross-section. An electron & positron, accelerated in SLAC's PEP-II collider, annihilate at centre to produce a B meson and an anti-B meson. They live too briefly to be seen but are revealed by their decays. One decays to a kaon & three pions (red tracks), the other to a J-psi & a neutral kaon. These are also unseen, but the J/psi decays to two muons (orange tracks, right), the kaon to two pions (orange tracks, left). CP violation is the breakdown of charge & parity symmetries in certain particle interactions.

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Keywords: antimatter, b mesons, babar detector, bottom quarks, charge parity violation, computer screen, cp violation, electronic display, high-energy physics, j/psi particle, kaons, matter, muons, particle physics research, pions, slac, stanford linear accelerator, subatomic particles, symmetry violation, the particle odyssey, weak nuclear force

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