Photon-calibrated event-activity bias and subcollision geometry in d+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV with PYTHIA 8 Angantyr

Muhammad Ajaz, Haifa I. Alrebdi, Muhammad Waqas

The paper uses the PYTHIA 8 Angantyr model to study how event‑activity selections in d+Au collisions at √sₙₙ = 200 GeV bias the underlying collision geometry, comparing photon‑tagg…