Frankfurt 2014 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 52: Hadronenstruktur und -spektroskopie

HK 52.7: Vortrag

Freitag, 21. März 2014, 12:45–13:00, HZ 1+2

Tau Spectral Functions in a Linear Sigma Model with Weak Interactions. — •Anja Habersetzer — Goethe-Universität, Frankfurt, Deutschland

The decay of the Tau lepton is governed by weak interactions. After implementing weak interaction into a Linear Sigma Model with global U(2)_L x U(2)_R symmetry including scalar, pseudoscalar, vector and axial-vector mesons we determined the vacuum coupling constant of the weak bosons to hadrons and calculated the vector and axial-vector spectral functions. The results are in good agreement with the ALEPH data and confirm that rho and a1 meson are chiral partners.