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Anomalous Higgs boson production and decay

Kaoru Hagiwara
(
- KEK, Tsukuba
)
,
R. Szalapski
(
- Wisconsin U., Madison
)
,
D. Zeppenfeld
(
- Wisconsin U., Madison
)

Aug, 1993

17 pages

Published in:

Phys.Lett.B 318 (1993) 155-162

e-Print:

hep-ph/9308347 [hep-ph]

DOI:

10.1016/0370-2693(93)91799-S

Report number:

MAD-PH-783,
KEK-TH-370

View in:

ADS Abstract Service

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Abstract:

A non-standard symmetry breaking sector may lead to derivative couplings of the Higgs boson and thereby to anomalous interactions with the electroweak gauge bosons. In the framework of gauge-invariant effective Lagrangians the resulting changes in Higgs boson production and decay mechanisms are related to anomalous triple vector boson couplings. Using low energy constraints on the dimension-six operators in the effective Lagrangian, we discuss the size of deviations from SM predictions which may be expected in Higgs boson production and decay rates. Large enhancements are allowed {\it e.g.} in the

Z \to H \gamma

and

H\to \gamma \gamma

partial decay widths, leading to

Z\to \gamma\gamma\gamma

events at LEP. Uses RevTEX. Four figures available upon request from szalapski@pheno.physics.wisc.edu or szalapski@wiscphen.bitnet.

electroweak interaction: symmetry breaking
symmetry breaking: electroweak interaction
Z0: radiative decay
radiative decay: Z0
Higgs particle: radiative decay
radiative decay: Higgs particle
effective Lagrangian
invariance: gauge
coupling: (3gauge boson)
(3gauge boson): coupling

References(11)

Figures(0)

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