BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Reconstruction of the neutrino mass as a function of redshift - Ch
 ristiane Lorenz (ETH Zürich)
DTSTART:20210222T130000Z
DTEND:20210222T140000Z
UID:TALK154771@talks.cam.ac.uk
CONTACT:Sunny Vagnozzi
DESCRIPTION:In this talk\, I will present recent work about reconstructing
  the neutrino mass as a function of redshift z. I will demonstrate that cu
 rrent cosmological data are consistent with a constant neutrino mass in ti
 me\, with a larger bound on the neutrino mass at low redshifts coinciding 
 with the onset of dark energy domination\, of 1.38 eV (95% CL). This resul
 t can be explained either by the well-known degeneracy between ∑m_\\nu a
 nd the dark energy density at low redshifts\, or by models in which neutri
 no masses are generated very late in the Universe. Futhermore\, I will exp
 lain how the results of the reconstruction can be converted into cosmologi
 cal limits for models with post-recombination neutrino decay. In this case
 \, we find an upper bound of 0.18 eV (95% CL)\, which is below the sensiti
 vity of the KATRIN experiment. Thus\, a neutrino mass discovery by KATRIN 
 would hint towards models predicting both post-recombination neutrino mass
  generation and subsequent relic neutrino annihilation. This is joint work
  with Lena Funcke\, Matthias Löffler and Erminia Calabrese.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
END:VEVENT
END:VCALENDAR