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SUMMARY:Reconstruction of photons and neutral mesons in heavy-ion collisio
 ns with MPD at NICA
DTSTART;VALUE=DATE-TIME:20241025T093000Z
DTEND;VALUE=DATE-TIME:20241025T094500Z
DTSTAMP;VALUE=DATE-TIME:20260909T163551Z
UID:indico-contribution-4398@cern.ch
DESCRIPTION:Speakers: Yonghong Wang (Shandong University)\nThe Multi-Purpo
 se Detector (MPD)\, currently under construction at the NICA complex at JI
 NR\, is designed to be the primary experiment for studying heavy-ion colli
 sions in the energy range of $\\sqrt{s_{NN}}$ =4−11 GeV. The MPD aims to
  explore the baryon-rich region of the QCD phase diagram to investigate th
 e possible existence of a first-order phase transition and a critical end-
 point. The measurement of direct photon and neutral meson production is a 
 key part of the MPD physics program.\n\nWe will present results of physics
  feasibility studies for photon and neutral mesons ($\\pi^{0}$ and η)  re
 construction with the MPD detector in Bi+Bi collisions at $\\sqrt{s_{NN}}$
  = 9.2 GeV simulated using realistic event generators. Photon measurements
  are performed using two methods\, including the identification of photon 
 clusters in the electromagnetic calorimeter (ECAL) and the reconstruction 
 of photons in the tracking system as dielectron pairs produced through con
 versions in detector materials (PCM). Neutral meson signals are analyzed u
 sing the invariant mass method by combining photon pairs from ECAL-ECAL\, 
 PCM-PCM\, and ECAL-PCM sources\, with the uncorrelated combinatorial backg
 round estimated through the event-mixing technique. The measured $\\pi^{0}
 $ and η transverse momentum spectra are compared to truly generated ones 
 to estimate robustness of the developed reconstruction procedures.\n\nhttp
 s://indico.particle.mephi.ru/event/436/contributions/4398/
LOCATION: Petrovskiy 2
URL:https://indico.particle.mephi.ru/event/436/contributions/4398/
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