Speaker
Chiu-Tien Yu
(UW-Madison)
Description
Recent results from the PLANCK satellite provide the most stringent constraint on Neff, the effective number of degrees of freedom in the early universe. Non-standard neutrino interactions can affect the measurement of Neff. The Standard Model predicts Neff=3, while PLANCK measures Neff=3.3+/-0.5. I will discuss the implication of PLANCK's measurement on several new physics scenarios, including neutrino dipole moments and B-L vector gauge bosons.
Author
Chiu-Tien Yu
(UW-Madison)