[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 Gómez Rocha
University of Graz, Austria

*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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