Constraining CMB physical processes using Planck 2018 data

This paper aims to perform a phenomenological parametrisation of the standard cosmological model, $\Lambda$CDM, weigh different physical processes that define pattern angular power spectra Cosmic Microwave Background (CMB) anisotropies. We use six amplitudes account for Sachs-Wolfe, early and late Integrated polarization contribution, Doppler lensing effects. To do so, we have adapted CLASS Boltzmann code used Markov Chain Monte Carlo (MCMC) sampler Cobaya explore Planck 2018 likelihood constrain combinations parameters. Observing deviations mean values from predictions $\Lambda$CDM model could be useful resolve existing tensions. For first time, comprehensive analysis CMB has been performed using temperature, spectra. In previous work, were constrained only TT data, however, by including data find constraints on these contributions are tighter. addition, some degeneracies appear when considering completely broken taking into all data. Consequently, models with more than three can studied, which is prohibitive temperature spectrum used. The results presented in this show experiment except Sachs-Wolfe effect. No inconsistencies found largest improvements obtained include parameter, $A_L$.