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Abstract <p>Direct photons produced in electromagnetic processes in heavy-ion collisions do not interact with other particles in the collision zone. Analysis of direct photon anisotropic flow provides additional information about the conditions at the production time and the development of collective flow. Direct photon flow is extracted based on flow and spectra of inclusive photons and of neutral pions, the main source of decay photons. Moreover, the measurement of the neutral pion spectra and flow is interesting by itself as it allows to constrain properties of hot and dense nuclear matter thanks to the robust particle identification and wide coverage in transverse momentum. We present the performance of measurement of anisotropic flow for inclusive photons and neutral pions with the MPD experiment.</p>

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Performance of Anisotropic Flow Measurement of Inclusive Photons and Neutral Pions in Bi \({+}\) Bi Collisions at \({\sqrt{s_{NN}}=9.2}\) GeV with the MPD at NICA

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Oleg Golosov,
  • Dmitry Peresunko,
  • Dmitry Blau

摘要

Abstract

Direct photons produced in electromagnetic processes in heavy-ion collisions do not interact with other particles in the collision zone. Analysis of direct photon anisotropic flow provides additional information about the conditions at the production time and the development of collective flow. Direct photon flow is extracted based on flow and spectra of inclusive photons and of neutral pions, the main source of decay photons. Moreover, the measurement of the neutral pion spectra and flow is interesting by itself as it allows to constrain properties of hot and dense nuclear matter thanks to the robust particle identification and wide coverage in transverse momentum. We present the performance of measurement of anisotropic flow for inclusive photons and neutral pions with the MPD experiment.