Journalartikel

Jahr der Veröffentlichung: 2005

Zeitschrift: Physical Review D

Bandnummer: 72

Heftnummer: 9

ISSN: 1550-7998

eISSN: 1550-2368

Open Access Status: Green

DOI Link: https://doi.org/10.1103/PhysRevD.72.094025

Verlag: American Physical Society

Abstract: 
We introduce an extension to the ladder truncated Bethe-Salpeter equation for mesons and the rainbow truncated quark Schwinger-Dyson equations which includes quark-loop corrections to the gluon propagator. This truncation scheme obeys the axialvector Ward-Takahashi identity relating the quark self-energy and the Bethe-Salpeter kernel. Two different approximations to the Yang-Mills sector are used as input: the first is a sophisticated truncation of the full Yang-Mills Schwinger-Dyson equations, the second is a phenomenologically motivated form. We find that the spectra and decay constants of pseudoscalar and vector mesons are overall described well for either approach. Meson mass results for charge eigenstate vector and pseudoscalar meson masses are compared to lattice data. The effects of unquenching the system are small but not negligible.

Harvard-Zitierstil: Fischer, C., Watson, P. and Cassing, W. (2005) Probing unquenching effects in the gluon polarization in light mesons, Physical Review D, 72(9), Article 094025. https://doi.org/10.1103/PhysRevD.72.094025

APA-Zitierstil: Fischer, C., Watson, P., & Cassing, W. (2005). Probing unquenching effects in the gluon polarization in light mesons. Physical Review D. 72(9), Article 094025. https://doi.org/10.1103/PhysRevD.72.094025