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The Sign of S from electroweak radiative corrections

Michael J. Dugan
(
- Harvard U.
)
,
Lisa Randall
(
- Harvard U.
)

May, 1991

7 pages

Published in:

Phys.Lett.B 264 (1991) 154-160

Published: 1991

DOI:

10.1016/0370-2693(91)90720-B

Report number:

HUTP-91-A018

View in:

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Abstract: (Elsevier)

We consider radiative corrections to the parameter S characterizing “oblique” corrections to electroweak interactions from representations of electroweak interactions which preserve a custodial SU (2) symmetry. Our primary goal is to demonstrate that the contribution to S can take either sign. We consider two general cases, one with scalars and one with fermions. The most interesting example is scalar representations, which we will show can quite generally a negative contribution to S . For the class of fermion representations we consider, S can also be negative, although larger mass splittings between custodial SU (2) representations are required.

electroweak interaction: radiative correction
radiative correction: electroweak interaction
symmetry: SU(2)
new particle: effect
scalar particle: representation
fermion: representation

References(10)

Figures(0)

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