KL →μ+μ−, top mass and bottom lifetime

Top Mass Measurement and Bottom Fragmentation at the Lhc *

We show some recent HERWIG results related to the top quark mass reconstruction at the LHC and discuss possible improvements for studies of the bottom quark fragmentation function in the top decay. The large amount of t ¯ t pairs which are expected at the future experiments at the LHC 1 will allow precise measurements of the top-quark properties. For the sake of an improved measurement of the t...

Bottom and Top Physics

The production of bottom quarks at the SSC and the formalism and phenomenology of observing CP violation in B meson decays is discussed. The production of a heavy t quark which decays into a real W boson, and what we might learn from its decays is examined.

Top - Down ? CHEMISTRY : Mass Spectrometry : Bottom - Up or

www.sciencemag.org (this information is current as of December 10, 2006 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/314/5796/65 version of this article at: including high-resolution figures, can be found in the online Updated information and services, found at: can be related to this article A list of selected additional ...

A Mechanism for the Top-Bottom Mass Hierarchy

We discuss a mechanism to generate hierarchy between masses of the top and bottom quarks without fine-tuning of the Yukawa coupling constants. In the framework of the two-Higgs-doublet model (THDM) with a discrete Z2 symmetry, there exists the vacuum where only the top quark receives the mass of the order of the electroweak symmetry breaking scale v(≃ 246GeV), while the bottom quark remains mas...

Bottom-up, top-down