2017/09/22 by Hai-hong Li, Feng-lan Shao, Jun Song
Physics and Astronomy · #Baryon #Hadronization #High-Energy Particle Collisions Research #Large Hadron Collider #Meson #Multiplicity (mathematics) #Observable #Quantum Chromodynamics and Particle Interactions #Quark #Theoretical and Computational Physics #nucl-th
paper · pdf · doi:10.1088/1674-1137/42/1/014102
published as Chinese Physics C, 2018, 42(1): 14102 · 8 pages, 3 figures
arxiv created 2017/09/22 · openalex created_date 2017/10/06 · arxiv updated 2017/12/18 · openalex publication_date 2018/01/01 · openalex updated_date 2026/08/05
We study the multiplicity fluctuation and correlation of identified mesons and baryons formed at hadronization by the quark combination mechanism in the context of ultra-relativistic heavy-ion collisions. Based on the statistical method of free quark combination, we derive the two-hadron multiplicity correlations, including meson-meson and meson-baryon correlations, and take the effects of quark number fluctuation at hadronization into account by a Taylor expansion method. After including the decay contributions, we calculate the dynamical fluctuation observable ν dyn for K π , p π and Kp pairs and discuss what underlying physics can be obtained by comparing with data from Pb-Pb collisions at s NN = 2.76 TeV and simulations from the HIJING and AMPT event generators.