Extraction of inclusive photon production at mid-rapidity in p + p and Au + Au collisions at \(\sqrt{s_{\rm{NN}}}\) = 200 GeV

Abstract

We present a comprehensive study on the individual sources of an inclusive photon production during high-energy hadronic collisions. The cross section and invariant yields of inclusive photons are obtained as a function of \(p_{\rm {T}}\) at mid-rapidity (\(|y|<0.5\)) in p + p and Au + Au collisions at \(\sqrt{s_{\rm{NN}}}\) = 200 GeV, respectively. These results provide crucial inputs to separate measurements of open bottom and charm hadron yield suppression in heavy-ion collisions, which are used to test the mass hierarchy of the parton energy loss in the quark gluon plasma created during these collisions. The procedure developed in this study can also be applied to other measurements of electrons from an open heavy-flavor hadron decay, such as the collective flow in the RHIC beam energy scan program.

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Author information

Affiliations

Authors

Contributions

All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Sheng-Hui Zhang. The first draft of the manuscript was written by Sheng-Hui Zhang and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Yi-Fei Zhang.

Additional information

This work was supported by National Key Research and Development Program of China (Nos. 2018YFE0205200, 2018YFE0104700, and 2020YFE0202002), National Natural Science Foundation of China (No. 11890712), Natural Science Foundation of Anhui Province (No. 1808085J02), Fundamental Research Funds for the Central Universities (No. WK2030000013) and the Project funded by the China Postdoctoral Science Foundation (No. 2019M652177).

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Zhang, SH., Ma, RR., Zhang, YF. et al. Extraction of inclusive photon production at mid-rapidity in p + p and Au + Au collisions at \(\sqrt{s_{\rm{NN}}}\) = 200 GeV. NUCL SCI TECH 32, 7 (2021). https://doi.org/10.1007/s41365-020-00840-4

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Keywords

  • Inclusive photon
  • Cross section
  • Invariant yields
  • Mass hierarchy
  • Technical reference