[Jlab-seminars] Theory Center Seminars

[Mary Fox]

Theory Center Seminars
Wed., May 21, 2014
2:00 p.m. (coffee at 1:45 p.m.)
CEBAF Center, Room F224/225


Carina Popovici
University of Giessen, Germany

*Meson Phenomenology in a Bethe-Salpeter Equation Approach*

We investigate aspects of the effective interaction in a rainbow-ladder 
truncated meson model of QCD within a covariant Landau-gauge 
Bethe-Salpeter-equation approach. Based upon past success for the light- 
[1] as well as heavy-quark [2] domains, we discuss the range of 
applicability and features of a combined effort with comprehensive 
phenomenological claim and goals. [1] P. Maris and P.C. Tandy, PRC60 
(1999) 055214, and references therein.[2] M. Blank and A. Krassnigg, 
PRD84 (2011) 096014.
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Maria Gomez Rocha
University of Graz, Switzerland

*Consequences of a Dressed Quark-Gluon Vertex in Heavy-Light Mesons*

We study mesons in a Bethe-Salpeter-equation approach. In particular, we 
investigate corrections to the rainbow-ladder truncation using a very 
simple model used previously to study aspects and consequences of a 
dressed quark-gluon vertex in mesons with equal-mass constituents[1,2]. 
Looking at the meson mass spectrum we attempt to find patterns in - as 
well as to quantify - corrections to the well-established rainbow-ladder 
truncation, generated in a systematic way. [1] A. Bender, W. Detmold, 
C.D. Roberts, A. W. Thomas. Phys. Rev. C65 (2002) 065203 [2] M.S. 
Bhagwat, A. Holl, A. Krassnigg, C.D. Roberts and P. C. Tandy. Phys.Rev. 
C70 (2004) 035205
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