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

Barata, João; Gong, Wenjie; Venugopalan, Raju

doi:10.1103/physrevd.109.116003

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

Journal Article · 07 June 2024 · Physical Review. D.

DOI: https://doi.org/10.1103/physrevd.109.116003 · OSTI ID:2371604

^[1]; Gong, Wenjie ^[2]; Venugopalan, Raju ^[3]

Brookhaven National Laboratory (BNL), Upton, NY (United States)
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Brookhaven National Laboratory (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)

Self-polarizing weak decays of $$Λ$$-hyperons provide unique insight into the role of entanglement in the fragmentation of QCD strings through measurements of the spin correlations of $$Λ\overline{Λ}$$-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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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP); Simons Foundation; USDOE

Grant/Contract Number:: SC0012704; 994318

OSTI ID:: 2371604

Alternate ID(s):: OSTI ID: 2372839

Report Number(s):: BNL-225661-2024-JAAM; TRN: US2500301

Journal Information:: Physical Review. D., Vol. 109, Issue 11; ISSN 2470-0010

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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