Refine
Year of publication
Language
- English (361)
Has Fulltext
- yes (361)
Is part of the Bibliography
- no (361)
Keywords
- LHC (5)
- ALICE experiment (3)
- Hadron-Hadron Scattering (3)
- Heavy Ions (3)
- Beauty production (2)
- Charm physics (2)
- Collectivity (2)
- Correlation (2)
- Diffraction (2)
- Elastic scattering (2)
Institute
- Frankfurt Institute for Advanced Studies (FIAS) (331)
- Physik (327)
- Informatik (285)
- Hochschulrechenzentrum (2)
We report the first measurements of cumulants, up to 4𝑡ℎ order, of deuteron number distributions and protondeuteron correlations in Au+Au collisions recorded by the STAR experiment in phase-I of Beam Energy Scan (BES) program at the Relativistic Heavy Ion Collider. Deuteron cumulants, their ratios, and proton-deuteron mixed cumulants are presented for different collision centralities covering a range of center-of-mass energy per nucleon pair √𝑠NN = 7.7 to 200 GeV. It is found that the cumulant ratios at lower collision energies favor a canonical ensemble over a grand canonical ensemble in thermal models. An anti-correlation between proton and deuteron multiplicity is observed across all collision energies and centralities, consistent with the expectation from global baryon number conservation. The UrQMD model coupled with a phase-space coalescence mechanism qualitatively reproduces the collision-energy dependence of cumulant ratios and proton-deuteron correlations.