Research Article

Excitation Function of Initial Temperature of Heavy Flavor Quarkonium Emission Source in High Energy Collisions

Figure 1

Transverse momentum spectra, (a–c) , (d, e) , (f) , and (g) of in different decay or production modes in (a–c) , (d, e) +, (f) +, and (g) collisions at energies (a) 39, (b) 62.4, (c) 200, (d) 500, and (e) 510 GeV, as well as (f) 1.8 and 1.96, and (g) 2.76 TeV. The experimental data represented by the symbols are measured by the (a–e) STAR [13, 14], (f) CDF [15, 16], and (g) ALICE Collaborations [18] with different centrality classes such as (a–c) 0-20%, 20-40%, 40-60%, and 0-60%, and (g) 0-20%, 20-40%, and 40-90%, as well as with different cross sections, e.g., (d, e) full and fiducial cross sections. Some data points are scaled by different amounts marked in the panels. The data points are fitted by the (two-component) Erlang distribution (Eq. (3), the solid curve), the Hagedorn function (Eq. (4), the dashed curve), and the Tsallis-Levy function (Eq. (6), the dotted curve), respectively.
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