Dresden 2013 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 22: Gittereichtheorie
T 22.6: Vortrag
Montag, 4. März 2013, 18:00–18:15, WIL-C129
A BChPT approach to analyzing fanplot data — •Ludwig Greil, Peter C. Bruns, and Andreas Schäfer — Universität Regensburg, Germany
We apply the framework of covariant SU(3)f baryon chiral perturbation theory (BChPT) to calculate the quark mass dependence of the baryon octet (to O(p4)) and the quark mass dependence of the vector meson octet (to O(p3)). These formulae we use to extrapolate QCDSF lattice data down to the physical point while determining the low energy constants (LECs) appearing in our calculation. We then use these LECs to make predictions for quantities that, from a ChPT viewpoint can be related (by chiral symmetry and unitarity), like the π N sigma term or the isospin I=1, l=1 scattering phaseshift for ππ-scattering.
References:
P. C. Bruns, L. Greil, A. Schäfer, arXiv:1209.0980 (2012)