Cosmological Impacts of Nonstandard Neutrino Interactions

  • Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars

November 26, 2024 2:00 PM - November 26, 2024 3:00 PM
PAIS 3205

Host:
Francis-Yan Cyr-Racine
Presenter:
John Houghteling (UNM)
Despite the best efforts of particle physicists, the true nature of neutrinos remains a mystery. Their feeble interaction strengths make directly measuring their properties phenomenally difficult, but cosmology offers another probe. In the radiation-dominated epoch, neutrinos make up over 40% of the energy density of the universe, meaning their interactions–including any nonstandard interactions–become cosmologically significant. In this talk, I will introduce two models that produce stronger neutrino self-interactions: one simple and one more complex. By comparing how these models fare when confronted with data, we can explore why this intriguing scenario with stronger neutrino interactions is allowed and work towards improving our neutrino models. By generalizing these conclusions, we can further add to our understanding of both the Hubble and Sigma-8 tensions, aiding in the work toward a single solution to the biggest problems in modern cosmology.

Upcoming Events

A Search for New Physics in Decays of B Mesons to Muon Pairs, Development of New Particle Timing Technology, and Characterization of Radiation Damage in Silicon Detectors at the Large Hadron Collider
Hijas Farook (UNM)
Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
Feb. 25, 2:00 PM
PAIS 3205

Quantum Radar with Undetected Photons
Diego Dalvit (LANL)
Physics and Astronomy Colloquium
Feb. 28, 3:30 PM - Feb. 28, 4:30 PM
PAIS 1100

TBA
Vishal Vatsa (UNM)
Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
Mar. 4, 2:00 PM
PAIS 3205

(No Colloquium on March 7)

Physics and Astronomy Colloquium
Mar. 7, 3:30 PM - Mar. 7, 4:30 PM
PAIS 1100

TBA
Kylar Greene (UNM)
Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars
Mar. 11, 2:00 PM
PAIS 3205