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We explore the performance of an updated effective-one-body (EOB) model forspin-aligned coalescing black hole binaries designed to deal with any orbitalconfiguration. The model stems from previous work involving the \TEOBResumS{}waveform model, but incorporates recently computed analytical information up tofifth post-Newtonian (PN) order in the EOB potentials. The dynamics is theninformed by Numerical Relativity (NR) quasi-circular simulations (incorporatingalso recently computed 4PN spin-spin and, optionally, 4.5PN spin-orbit terms).The so-constructed model(s) are then compared to various kind of NRsimulations, covering either quasi-circular inspirals, eccentric inspirals andscattering configurations. For quasi-circular (534 datasets) and eccentric (28datasets) inspirals up to coalescence, the EOB/NR unfaithfulness is well below$1\%$ except for a few outliers in the high, positive, spin corner of theparameter space, where however it does not exceed the $3\%$ level. The EOBvalues of the scattering angle are found to agree ($\lesssim 1\%$) with the NRpredictions for most configurations, with the largest disagreement of only$\sim 4\%$ for the most relativistic one. The inclusion of some high-orderanalytical information in the orbital sector is useful to improve the EOB/NRagreement with respect to previous work, although the use of NR-informedfunctions is still crucial to accurately describe the strong-field dynamics andwaveform.

physical review. d/physical review. d.

The next generation: Impact of high-order analytical information on  effective one body waveform models for noncircularized, spin-aligned black  hole binaries