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Four-loop singlet contribution to the rho parameter

Y. Schroder
(
- Bielefeld U.
)
,
M. Steinhauser
(
- Karlsruhe U., TTP
)

Apr, 2005

9 pages

Published in:

Phys.Lett.B 622 (2005) 124-130

e-Print:

hep-ph/0504055 [hep-ph]

DOI:

10.1016/j.physletb.2005.06.085

Report number:

BI-TP-2005-12,
SFB-CPP-05-11,
TTP-05-03

View in:

ADS Abstract Service

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Abstract:

We compute the four-loop contribution to the electroweak

\rho

parameter induced by the singlet diagrams of the

Z

-boson self-energy. The numerical impact on the weak mixing angle and the

W

-boson mass is small.

13.66.Jn
12.38.-t
14.65.Ha
electroweak interaction: rho parameter
correction: higher-order
Feynman graph: singlet
Z0: propagator
propagator: renormalization
Weinberg angle
W: mass

References(25)

Figures(0)

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