Measurability of φ, ω, and ρ mesons via di-electron decays in high-temperature states produced in heavy-ion collisions

Abstract

We discuss the measurability of φ, ω, and ρ mesons via di-electron decays in high-temperature states produced in heavy-ion collisions, equivalently at different pion multiplicities per heavyion collision of dN pi; 0 +π ± /dy = 1000 and 2700, intended for the most central Au+Au collisions at √snn = 200 GeV (RHIC) and the most central Pb+Pb collisions at √snn = 5.5 TeV (LHC), respectively, by evaluating the signal-to-background ratios and statistical significance for the idealized detection system in a numerical simulation. The simulation study provides a guideline applicable to a concrete detector design by focusing only on the key experimental issues relevant to the measurement of di-electrons. The results suggest that there are realizable parameter ranges for measuring light vector mesons via di-electrons with a reasonable significance level, even in the highest-multiplicity case.