Implications of Dynamical Generation of Standard-Model Fermion Masses

Details Implications of Dynamical Generation of Standard-Model Fermion Masses Implications of Dynamical Generation of Standard-Model Fermion Masses

2005-01-31

arxiv.org/abs/hep-ph/0501294v1

Phys.Rev.Lett. 94 (2005) 241801

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, latex

Scientific paper

10.1103/PhysRevLett.94.241801

We point out that if quark and lepton masses arise dynamically, then in a wide class of theories the corresponding running masses $m_{f_j}(p)$ exhibit the power-law decay $m_{f_j}(p) \propto \Lambda_j^2/p^2$ for Euclidean momenta $p >> \Lambda_j$, where $f_j$ is a fermion of generation $j$, and $\Lambda_j$ is the maximal scale relevant for the origin of $m_{f_j}$. We estimate resultant changes in precision electroweak quantities and compare with current data. It is found that this data allows the presence of such corrections. We also note that this power-law decay renders primitively divergent fermion mass corrections finite.

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