511 citations · 2.8k across the 55 of their papers we have counts for
8 papers · 1 filter
Neutrino mass limits from SDSS, 2dFGRS and WMAP
V. Barger, Danny Marfatia, Adam Tregre
We investigate whether cosmological data suggest the need for massive neutrinos. We employ galaxy power spectrum measurements from the Sloan Digital Sky Survey (SDSS) and the Two D…
Z' Mediated Flavor Changing Neutral Currents in B Meson Decays
Vernon Barger, Cheng-Wei Chiang, Paul Langacker +1
We study the effects of an extra U(1)' gauge boson with flavor changing couplings with fermion mass eigenstates on certain B meson decays that are sensitive to such new physics con…
Structure of Cosmological CP Violation via Neutrino Seesaw
V. Barger, Duane A. Dicus, Hong-Jian He +1
The cosmological matter-antimatter asymmetry can originate from CP-violating interactions of seesaw Majorana neutrinos via leptogenesis in the thermal phase of the early universe.…
Hiding relativistic degrees of freedom in the early universe
V. Barger, James P. Kneller, Paul Langacker +2
We quantify the extent to which extra relativistic energy density can be concealed by a neutrino asymmetry without conflicting with the baryon asymmetry measured by the Wilkinson M…
Effective number of neutrinos and baryon asymmetry from BBN and WMAP
V. Barger, James P. Kneller, Hye-Sung Lee +2
We place constraints on the number of relativistic degrees of freedom and on the baryon asymmetry at the epoch of Big Bang Nucleosynthesis (BBN) and at recombination, using cosmic…
Primordial Nucleosynthesis Constraints on Z' Properties
Vernon Barger, Paul Langacker, Hye-Sung Lee
In models involving new TeV-scale Z' gauge bosons, the new U(1)' symmetry often prevents the generation of Majorana masses needed for a conventional neutrino seesaw, leading to thr…