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SUMMARY:Cosmological Probes of Light Relics - Benjamin Wallisch (DAMTP)
DTSTART:20180205T130000Z
DTEND:20180205T140000Z
UID:TALK97816@talks.cam.ac.uk
CONTACT:Tobias Baldauf
DESCRIPTION:Neutrinos and new light particles\, which arise in many extens
 ions of the Standard Model of particle physics\, are an important probe of
  the (thermal) history of the universe. However\, they are hard to detect 
 in terrestrial experiments due to their weak couplings to ordinary matter.
  The high temperatures in the early universe allow an efficient production
  of even very weakly-coupled particles which makes it possible to measure 
 their gravitational effects in cosmological observations. I will discuss t
 he sensitivity of future cosmic microwave background and large-scale struc
 ture observations to constrain the radiation density and detect these part
 icles\, which will probe the universe when it was younger than one second.
  In addition\, I will present the first measurement of the cosmic neutrino
  background as imprinted in the baryon acoustic oscillation spectrum obtai
 ned by BOSS.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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