Feasibility studies of conserved charge fluctuations in Au-Au collisions with CBM

Abstract

We present the CBM physics performance study for measurements of the higher order cumulants of the net-proton multiplicity distributions. These observables are proxy for net-baryon fluctuations and are commonly used to study the phase structure of QCD phase diagram. The simulation is done for $Au+Au$ collision at beam kinetic energy $E_{lab}=10$ AGeV. The cumulants of net-proton distributions have been calculated at midrapidity ($|\Delta y|=1$) for the transverse momentum range $0.2<p_T<2.0$ GeV/c. The centrality dependence of cumulants of net-proton upto order four is presented. The efficiency and detector effects are corrected using unfolding techniques. This work shows that the higher order cumulants of net-proton can be measured using the CBM detector.

arXiv commentProceedings of the XXVIII th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2019), Wuhan, China, November 3-9 2019

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• Search for the QCD Critical Point in High Energy Nuclear Collisions