Physics of a sextet quark sector

The Physics of a Sextet Quark Sector∗

Electroweak symmetry breaking can be a consequence of color sextet quark chiral symmetry breaking, with sextet pions producing the longitudinal components of the electroweak vector bosons. If so, a special solution of QCD is involved, for which the high-energy S-Matrix can be constructed “semiperturbatively” via the chiral anomaly and reggeon diagrams. An infra-red fixed point and the starting ...

Top Quark Physics: Summary

This talk summarizes recent progress in top quark physics studies for high energy linear electron-positron colliders as presented at the LCWS2000 Workshop at Fermilab. New results were presented for top pair production at threshold and in the continuum, as well as for top production at γγ colliders.

Top Quark Physics ∗

Heavy Quark Physics *

Present and future lattice calculations involving b and c quarks include some of the most important applications of lattice gauge theory to standard model physics. These include the heavy meson decay constants, the BB mixing amplitude, and various semileptonic decay amplitudes, which are all crucial in extracting CKM angles from experimental data. They also include the extraction of αs from the...

Summary of Top Quark Physics *

I briefly review standard top quark physics at hadron colliders and summarize the contributions to this conference. The possibility of new mechanisms for t ¯ t production are also discussed.