In search of global 21-cm signal using artificial neural network in light of ARCADE 2 Vivekanand Mohapatra, J. Johnny, Pravin Kumar Natwariya, Jishnu Goswami and Alekha C. Nayak Eur. Phys. J. C, 85 5 (2025) 533 Published online: 14 May 2025 DOI: 10.1140/epjc/s10052-025-14256-0