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Committee for collaboration of Czech Republic

with Joint Institute for Nuclear Research in Dubna Login
The proton-Omega correlation function in Au plus Au collisions at root s(NN)=200 GeV

Author
Adamczyk L. AGH University of Science and Technology, Poland
Lednický Richard, promovaný fyzik DrSc. dr. h. c. Institute of physics of the ASCR, JINR Dubna
et al.  different institutions

Year
2019

Scientific journal
PHYSICS LETTERS B 790 490-497

Web


Abstract
We present the first measurement of the proton-Omega correlation function in heavy-ion collisions for the central (0-40%) and peripheral (40-80%) Au + Au collisions at root 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-Omega correlation function are sensitive to the presence of a nucleon-Omega bound state. These predictions are based on the proton-Omega interaction extracted from (2 + 1)-flavor lattice QCD calculations at the physical point. The measured ratio of the proton-Omega 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-Omega bound system with a binding energy of similar to 27 MeV. (C) 2019 Published by Elsevier B.V.

Cite article as:
L. Adamczyk, R. Lednický, . et al., "The proton-Omega correlation function in Au plus Au collisions at root s(NN)=200 GeV ", PHYSICS LETTERS B 790 490-497 (2019)