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arXiv · 2308.13596

Realtime dynamics of hyperon spin correlations from string fragmentation in a deformed four-flavor Schwinger model

João Barata·Wenjie Gong·Raju Venugopalan
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Abstract

Self-polarizing weak decays of $\Lambda$-hyperons provide unique insight into the role of entanglement in the fragmentation of QCD strings through measurements of the spin correlations of $\Lambda{\bar \Lambda}$-pairs produced in collider experiments. The simplest quantum field theory representing the underlying parton dynamics is the four-flavor massive Schwinger model plus an effective spin-flip term, where the flavors are mapped to light (up/down) and heavy (strange) quarks and their spins. This construction provides a novel way to explore hyperon spin-correlations in 1+1-dimensions. We investigate the evolution of these correlations for different string configurations that are sensitive to the rich structure of the model Hamiltonian.

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João Barata, Wenjie Gong, Raju Venugopalan. 2023-08-25. Realtime dynamics of hyperon spin correlations from string fragmentation in a deformed four-flavor Schwinger model. https://arxiv.org/abs/2308.13596

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