  The ratios of off-diagonal and diagonal susceptibilities of conserved charges
are studied using a hadron resonance gas (HRG) model with an emphasis towards
providing a proper baseline for comparison to the corresponding future
experimental measurements. We have studied the effect of kinematic acceptances,
transverse momentum ($p_T$) and pseudorapidity ($\eta$), and different charged
states on the ratios of the calculated susceptibilities. We find that the
effect of $p_T$ and $\eta$ acceptance on the ratio of the susceptibilities are
small relative to their dependence on the beam energy or the charged states of
the used particles. We also present a HRG based calculation for various
combinations of cumulant ratios of protons and pions, recently proposed as
robust observables (with no theoretical uncertainties) for critical point
search in the experiments. These results which increase as a function of
collision energy will provide a better baseline for non-critical point physics
compared to Poisson expectation.
