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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 490-497 |
| Number of pages | 8 |
| Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Volume | 790 |
| DOIs | |
| State | Published - Mar 10 2019 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
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The proton–Ω correlation function in Au + Au collisions at s NN =200GeV . / STAR Collaboration.
In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 790, 10.03.2019, p. 490-497.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - The proton–Ω correlation function in Au + Au collisions at s NN =200GeV
AU - STAR Collaboration
AU - Adam, J.
AU - Adamczyk, L.
AU - Adams, J. R.
AU - Adkins, J. K.
AU - Agakishiev, G.
AU - Aggarwal, M. M.
AU - Ahammed, Z.
AU - Ajitanand, N. N.
AU - Alekseev, I.
AU - Anderson, D. M.
AU - Aoyama, R.
AU - Aparin, A.
AU - Arkhipkin, D.
AU - Aschenauer, E. C.
AU - Ashraf, M. U.
AU - Atetalla, F.
AU - Attri, A.
AU - Averichev, G. S.
AU - Bai, X.
AU - Bairathi, V.
AU - Barish, K.
AU - Bassill, A. J.
AU - Behera, A.
AU - Bellwied, R.
AU - Bhasin, A.
AU - Bhati, A. K.
AU - Bielcik, J.
AU - Bielcikova, J.
AU - Bland, L. C.
AU - Bordyuzhin, I. G.
AU - Brandenburg, J. D.
AU - Brandin, A. V.
AU - Brown, D.
AU - Bryslawskyj, J.
AU - Bunzarov, I.
AU - Butterworth, J.
AU - Caines, H.
AU - Calderón de la Barca Sánchez, M.
AU - Campbell, J. M.
AU - Cebra, D.
AU - Chakaberia, I.
AU - Chaloupka, P.
AU - Chang, Z.
AU - Chang, F. H.
AU - Chankova-Bunzarova, N.
AU - Chatterjee, A.
AU - Chattopadhyay, S.
AU - Chen, J. H.
AU - Cherney, Michael G.
AU - Seger, Janet E.
PY - 2019/3/10
Y1 - 2019/3/10
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85061319745&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061319745&partnerID=8YFLogxK
U2 - 10.1016/j.physletb.2019.01.055
DO - 10.1016/j.physletb.2019.01.055
M3 - Article
AN - SCOPUS:85061319745
VL - 790
SP - 490
EP - 497
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
ER -