Science, Space and Technology News 2024
The ATLAS and CMS experiments have observed entanglement between top quarks and their antiparticles, confirming this phenomenon at high energies. This opens new avenues for quantum research, supported by large data samples from the LHC and enhanced by modern analytical techniques. Credit: SciTechDaily.comentanglement, the ATLAS and CMS experiments have observed quantum entanglement between top quarks and their antiparticles at the Large Hadron Collider.
Confirming the quantum entanglement between the heaviest fundamental particles, the top quarks, has opened up a new avenue to explore the quantum nature of our world at energies far beyond what is accessible, e.g., in quantum optics. At the same time, the large production rate of top quark pairs at the LHC provides a gigantic data sample of top quarks, offering a unique opportunity for these studies.
To solve the paradox, they suggested that our description of entanglement is incomplete and that there are other quantities at play in the system that we cannot access experimentally. Entanglement would then be the result of our ignorance about these hidden variables.In a new measurement, the CMS collaboration examines, for the first time, the spin entanglement of a top quark and a top antiquark that are simultaneously produced at a very high speed with respect to each other.
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