The proton-[omega] correlation function in Au+Au collisions at √sNN=200 GeV

• Verfasst von: Adam, Jaroslav [VerfasserIn]
• Verfasst von: Deppner, Ingo Martin [VerfasserIn]
• Verfasst von: Herrmann, Norbert [VerfasserIn]
• Titel: The proton-[omega] correlation function in Au+Au collisions at √sNN=200 GeV
• Körperschaft: STAR Collaboration [VerfasserIn]
• Verf.angabe: STAR Collaboration J. Adam, I.M. Deppner, N. Herrmann [und 347 weitere]
• E-Jahr: 2019
• Jahr: 31 January 2019
• Umfang: 8 S.
• Fussnoten: Gesehen am 28.05.2018 ; Im Titel ist Omega als griechischer Buchstabe dargestellt ; Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol, "NN" ist dabei tiefgestellt
• Titel Quelle: Enthalten in: Physics letters / B
• Ort Quelle: Amsterdam : North-Holland Publ., 1967
• Jahr Quelle: 2019
• Band/Heft Quelle: 790(2019), Seite 490-497
• ISSN Quelle: 1873-2445
• DOI: doi:10.1016/j.physletb.2019.01.055
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Correlations
• Sach-SW: Femtoscopy
• Sach-SW: NΩ dibaryon
• K10plus-PPN: 1666383058

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 sNN=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.