Wednesday, February 1, 2012

1201.6229 (S. Fajfer)

Theory overview of charm physics    [PDF]

S. Fajfer
Recent developments in charm physics within the standard model and beyond are
reviewed. The precision study of leptonic charm meson decays accompanied with
the constraints coming from K, B and tau physics enables to determine
constraints on models of new physics. The standard model contributions in the
D0 - D0bar system are still under investigation including operators of higher
dimensions. New physics models such as the Littlest Higgs model or warped
extra-dimensional models might modify the amount of CP violation, although CP
violating asymmetries are still predicted to be at most of the order 1%. The
forward-backward asymmetry in the top anti-top pair production at the Tevatron
is opening a new window in the study of new physics in the charm sector. A few
of the models considered to explain the observed asymmetry might modify flavor
changing neutral current mediated charm processes. New physics searches in rare
charm decays are discussed. It is pointed out that in most models new physics
effects in rare charm decays are insignificant.
View original: http://arxiv.org/abs/1201.6229

No comments:

Post a Comment