The baryon density of the Universe from an improved rate of deuterium burning

by Dr Francesca Cavanna (INFN Sezione di Torino)

Friday 11 Dec 2020, 15:00 → 16:00 Europe/Rome

VIA ZOOM (Dipartimento di fisica ed astronomia)

Light elements were produced in the first few minutes of the Universe through a sequence of nuclear reactions known as Big Bang nucleosynthesis (BBN). 

Although astronomical observations of primordial deuterium abundance have reached percent accuracy, theoretical predictions based on BBN are hampered by large uncertainties on the cross-section of the deuterium burning D(p,g)3He reaction.

I will report on a new measurement of the D(p,g)3He cross section performed by the LUNA collaboration to an unprecedented precision of better than 3%. This result settles the most uncertain nuclear physics input to BBN calculations and substantially improve the reliability of using primordial abundances as probes of the physics of the early Universe.

 

here the link to see the talk after the date: https://mediaspace.unipd.it/media/1_qavsn2zl

Light elements were produced in the first few minutes of the Universe through a sequence of nuclear reactions known as Big Bang nucleosynthesis (BBN). 

Although astronomical observations of primordial deuterium abundance have reached percent accuracy, theoretical predictions based on BBN are hampered by large uncertainties on the cross-section of the deuterium burning D(p,g)3He reaction.

I will report on a new measurement of the D(p,g)3He cross section performed by the LUNA collaboration to an unprecedented precision of better than 3%. This result settles the most uncertain nuclear physics input to BBN calculations and substantially improve the reliability of using primordial abundances as probes of the physics of the early Universe.

 

here the link to see the talk after the date: https://mediaspace.unipd.it/media/1_qavsn2zl