66,323 research outputs found
A Theory of Anomaly With Right-Handed Currents
We present an ultraviolet complete theory for the and anomaly
in terms of a low mass gauge boson of a class of left-right symmetric
models. These models, which are based on the gauge symmetry , utilize vector-like fermions to
generate quark and lepton masses via a universal seesaw mechanism. A parity
symmetric version as well as an asymmetric version are studied. A light sterile
neutrino emerges naturally in this setup, which allows for new decay modes of
-meson via right-handed currents. We show that these models can explain
and anomaly while being consistent with LHC and LEP data as
well as low energy flavor constraints arising from , mixing, etc., but only for a limited range
of the mass: for
parity asymmetric (symmetric) Yukawa sectors. The light sterile neutrinos
predicted by the model may be relevant for explaining the MiniBoone and LSND
neutrino oscillation results. The parity symmetric version of the model
provides a simple solution to the strong CP problem without relying on the
axion. It also predicts an isospin singlet top partner with a mass TeV.Comment: 43 pages, 7 figures, references added, model slightly modifie
Some properties of the range of super-Brownian motion
We consider a super-Brownian motion . Its canonical measures can be
studied through the path-valued process called the Brownian snake. We obtain
the limiting behavior of the volume of the -neighborhood for the
range of the Brownian snake, and as a consequence we derive the analogous
result for the range of super-Brownian motion and for the support of the
integrated super-Brownian excursion. Then we prove the support of is
capacity-equivalent to in , , and the range of , as
well as the support of the integrated super-Brownian excursion are
capacity-equivalent to in ,
Virtual Element Methods on Meshes with Small Edges or Faces
We consider a model Poisson problem in () and establish error
estimates for virtual element methods on polygonal or polyhedral meshes that
can contain small edges () or small faces ().Comment: 36 page
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