The proton–Ω correlation function in Au + Au collisions at s                         NN                         =200GeV

doi:10.1016/j.physletb.2019.01.055

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The proton–Ω correlation function in Au + Au collisions at s NN =200GeV

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The proton–Ω correlation function in Au + Au collisions at s NN =200GeV

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol.790, pp.490-497

790

03/10/2019

DOI: https://doi.org/10.1016/j.physletb.2019.01.055

Abstract

Nuclear and High Energy Physics

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.

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Title: The proton–Ω correlation function in Au + Au collisions at s NN =200GeV
Publication Details: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol.790, pp.490-497
Series: 790
Number of pages: 8
Grant note: We thank Dr. Kenji Morita, Dr. Akira Ohnishi, Dr. Faisal Etminan and Dr. Tetsuo Hatsuda for providing the calculation and enlightening discussions. We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science, the U.S. National Science Foundation, the Ministry of Education and Science of the Russian Federation, National Natural Science Foundation of China, Chinese Academy of Sciences, the Ministry of Science and Technology of China (973 Program No. 2014CB845400, 2015CB856900) and the Chinese Ministry of Education, the National Research Foundation of Korea, Czech Science Foundation and Ministry of Education, Youth and Sports of the Czech Republic, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre of Poland, the Ministry of Science, Education and Sports of the Republic of Croatia, ROSATOM of Russia and German Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF) and the Helmholtz Association. Funding Information: We thank Dr. Kenji Morita, Dr. Akira Ohnishi, Dr. Faisal Etminan and Dr. Tetsuo Hatsuda for providing the calculation and enlightening discussions. We thank the RHIC Operations Group and RCF at BNL, the NERSC Center at LBNL, and the Open Science Grid consortium for providing resources and support. This work was supported in part by the Office of Nuclear Physics within the U.S. DOE Office of Science , the U.S. National Science Foundation , the Ministry of Education and Science of the Russian Federation , National Natural Science Foundation of China , Chinese Academy of Sciences , the Ministry of Science and Technology of China ( 973 Program No. 2014CB845400 , 2015CB856900 ) and the Chinese Ministry of Education , the National Research Foundation of Korea , Czech Science Foundation and Ministry of Education, Youth and Sports of the Czech Republic, Department of Atomic Energy and Department of Science and Technology of the Government of India, the National Science Centre of Poland , the Ministry of Science, Education and Sports of the Republic of Croatia, ROSATOM of Russia and German Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie (BMBF) and the Helmholtz Association .
Identifiers: 991005930836702656
Academic Unit: Physics
Language: English
Resource Type: Journal article

The proton–Ω correlation function in Au + Au collisions at s NN =200GeV

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The proton–Ω correlation function in Au + Au collisions at s NN =200GeV