Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-10-14
Nucl.Phys. B713 (2005) 278-290
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, latex
Scientific paper
10.1016/j.nuclphysb.2005.02.020
We present an analytical calculation of the leading three-loop radiative correction to the rho-parameter in the Standard Model in the large Higgs mass limit. This correction, of order g^6 m_H^4/M_W^4, is opposite in sign to the leading two-loop correction of order g^4 m_H^2/M_W^2. The two corrections cancel each other for a Higgs mass of approximately 480 GeV. The result shows that it is extremely unlikely that a strongly interacting Higgs sector could fit the data of electroweak precision measurements.
Boughezal Radja
der Bij J. van J.
Tausk J. B.
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