Phys. Rev. Lett. 94, 241801 (2005) [4 pages]Implications of Dynamical Generation of Standard-Model Fermion MassesReceived 31 January 2005; published 21 June 2005 We point out that if quark and lepton masses arise dynamically, then in a wide class of theories the corresponding running masses mfj(p) exhibit the power-law decay mfj(p)∝Λj2/p2 for Euclidean momenta p≫Λj, where fj is a fermion of generation j, and Λj is the maximal scale relevant for the origin of mfj. We estimate resultant changes in precision electroweak quantities and compare with current data. It is found that these data allow the presence of such corrections. We also note that this power-law decay renders primitively divergent fermion mass corrections finite. © 2005 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.94.241801
DOI:
10.1103/PhysRevLett.94.241801
PACS:
12.60.Nz, 11.15.−q, 12.15.Ff
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