# Impact of theoretical assumptions in the determination of the neutrino effective number from future CMB measurements

@article{Capparelli2017ImpactOT, title={Impact of theoretical assumptions in the determination of the neutrino effective number from future CMB measurements}, author={L. M. Capparelli and Eleonora Di Valentino and Alessandro Melchiorri and Jens Chluba}, journal={Physical Review D}, year={2017}, volume={97}, pages={063519} }

One of the major goals of future Cosmic Microwave Background measurements is the accurate determination of the effective number of neutrinos $N_{\rm eff}$. Reaching an experimental sensitivity of $\Delta N_{\rm eff} = 0.013$ could indeed falsify the presence of any non-standard relativistic particles at $95 \%$ c.l.. In this paper, we test how this future constraint can be affected by the removal of two common assumptions: a negligible running of the inflationary spectral index $n_{\rm run…

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