Refine
Year of publication
Language
- English (101)
Has Fulltext
- yes (101)
Is part of the Bibliography
- no (101)
Keywords
- Diffraction (2)
- Elastic scattering (2)
- RHIC (2)
- B-slope (1)
- Charged-particle multiplicity (1)
- Charmonia (1)
- Coalescence (1)
- Cold nuclear matter effects (1)
- Collectivity (1)
- Correlation (1)
Institute
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.