Strong evidence for quantum entanglement between Z bosons found by ATLAS and CMS
Quantum entanglement is certainly one of the stranger concepts to have emerged from the melting pot of 20th-century physics. Many great physicists, including Einstein, struggled to accept that the phenomenon could be real but, for decades now, the number of examples demonstrating it has been increasing. And, recently, the ATLAS and CMS Collaborations have added to these results by […]
The ATLAS and CMS Collaborations have discovered strong evidence for quantum entanglement between Z bosons, produced in high-energy collisions at the Large Hadron Collider (LHC). Quantum entanglement, a phenomenon that Einstein found perplexing, occurs when particles share a state regardless of the distance between them. In quantum mechanics, particles can exist in multiple states simultaneously, and if two particles are entangled, the state of one determines the state of the other.
The discovery of entangled Z bosons, which are responsible for the weak nuclear force, could provide further insights into this fundamental force and its behavior at extreme energies. Z bosons can have three spin states, -1, 0, or +1, while other particles, like top quarks, have only two possible spin states. When Z bosons are produced from a Higgs boson decay, the sum of their spin states must equal zero.
The researchers analyzed the decay of Higgs bosons into pairs of electrons or muons, which can be measured by the ATLAS and CMS detectors. By analyzing the spin properties of these particles, they found a correlation indicative of quantum entanglement. The findings not only support the idea of entangled Z bosons at high energies but also pave the way for future studies using the HiLumi LHC, which is expected to produce even more collisions, providing further opportunities for exploring quantum entanglement and other quantum phenomena.
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