Combinatorial formulas for symmetric Macdonald polynomials by superizations

Abstract: In this paper, we derive new combinatorial formulas for symmetric Macdonald polynomials $P_λ(X;q,t)$ and integral Macdonald polynomials $J_λ(X;q,t)$, in terms of several new statistics and the major index for a partition $λ$. Moreover, three existing formulas for symmetric Macdonald polynomials established by Corteel--Mandelshtam--Williams (2022), Corteel--Haglund--Mandelshtam--Mason--Williams (2022) and Mandelshtam (2025) are recovered. Our proof relies on a new statistic on super fillings, employing the superization formula of Ayyer--Mandelshtam--Martin (2023) and our recent approach to modified Macdonald polynomials.