2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224263We investigate the damping of the baryon acoustic oscillations in the matter power spectrum due to the quasinonlinear clustering and redshift-space distortions by confronting the models with the observations of the Sloan Digital Sky Survey luminous red galaxy sample. The chi-squared test suggests that the observed power spectrum is better matched by models with the damping of the baryon acoustic oscillations rather than the ones without the damping.9 pages, Physical Review D, in pressCosmology and Nongalactic Astrophysicstext