The proton-Omega correlation function in Au plus Au collisions at root s(NN)=200 GeV



Adam, J, Adamczyk, L, Adams, JR, Adkins, JK, Agakishiev, G, Aggarwal, MM, Ahammed, Z, Ajitanand, NN, Alekseev, I, Anderson, DM
et al (show 334 more authors) (2019) The proton-Omega correlation function in Au plus Au collisions at root s(NN)=200 GeV. PHYSICS LETTERS B, 790. pp. 490-497.

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Abstract

We present the first measurement of the proton–Ω correlation function in heavy-ion collisions for the central (0–40%) and peripheral (40–80%) Au + Au collisions at s NN =200 GeV by the STAR experiment at the Relativistic Heavy-Ion Collider (RHIC). Predictions for the ratio of peripheral collisions to central collisions for the proton–Ω correlation function are sensitive to the presence of a nucleon–Ω bound state. These predictions are based on the proton–Ω interaction extracted from (2+1)-flavor lattice QCD calculations at the physical point. The measured ratio of the proton–Ω correlation function between the peripheral (small system) and central (large system) collisions is less than unity for relative momentum smaller than 40 MeV/c. Comparison of our measured correlation ratio with theoretical calculation slightly favors a proton–Ω bound system with a binding energy of ∼ 27 MeV.

Item Type: Article
Uncontrolled Keywords: Correlations, Femtoscopy, N Omega dibaryon
Depositing User: Symplectic Admin
Date Deposited: 10 May 2019 08:23
Last Modified: 19 Jan 2023 00:46
DOI: 10.1016/j.physletb.2019.01.055
Open Access URL: https://doi.org/10.1016/j.physletb.2019.01.055
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3040567