Speakers
Description
New experiments with the possibility to measure the effective number of degrees of freedom in the early universe, such as CMB-S4 or Planck+BAO, can probe the effect of new thermalized light particles and beyond Standard Model interactions involving Dirac neutrinos. The presence of these neutrinos enables the description of different physical phenomena, such as the smallness of neutrino masses and the matter-antimatter asymmetry. Moreover, the presence of right-handed chirality partners for neutrinos allows the calculation of deviations in the effective number ∆