[Triumf-seminars] TRIUMF Seminar today at 14:00

postmaster at admin.triumf.ca postmaster at admin.triumf.ca
Fri Jul 27 05:00:00 PDT 2007

Date/Time: Fri 2007-07-27 at 14:00

Location:  Auditorium          

Speaker:   Stan Brodsky (Stanford Linear Accelerator Center)

Title:     New Developments in QCD

Abstract: One of the most interesting recent advances in hadron physics has been the application of AdS/CFT correspondence to quantum
chromodynamics. Although QCD is not a conformally invariant field theory, one can nevertheless use the mathematical representation of the conformal group in five-dimensional anti-de Sitter space to construct an analytic first approximation to the theory. The resulting AdS/QCD model gives accurate predictions for hadron spectroscopy and a description of the quark structure of mesons and baryons which has scale invariance and dimensional counting at short distances, together with color confinement at large distances. In addition, one can compute the form of the frame-independent light-front bound-state wavefunctions, the fundamental nonperturbative entities which encode hadron properties and which allow the computation of hadronic scattering amplitudes.

A number of novel applications of light-front wavefunctions  to QCD phenomenology will be discussed, including  single-spin asymmetries, color transparency, hidden color, intrinsic charm, sea-quark asymmetries, dijet diffraction, and direct hard processes.

Stimulants available 15 minutes before the talk.


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