Decomposition of the transition phase in multi-sideband schemes for reconstruction of attosecond beating by interference of two-photon transitions

Reconstruction of Attosecond Beating By Interference Two-photon Transitions (RABBITT) is a technique that can be used to determine the phases atomic transition elements in photoionization processes. In traditional RABBITT scheme, so-called "asymptotic approximation" considers measured phase as sum Wigner linked single-photon ionization process and continuum-continuum (cc) associated with further transitions continuum. this paper, we explore possibility extending asymptotic approximation multi-sideband schemes. The predictions from are then compared results obtained by an {\it ab initio} calculation based on solving time-dependent Schr\"odinger equation for hydrogen.