Bounds on Higgs and gauge boson interactions from LEP-2 data - INSPIRE

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Bounds on Higgs and gauge boson interactions from LEP-2 data

Oscar J.P. Eboli
(
- Sao Paulo, IFT and
- Wisconsin U., Madison
)
,
M.C. Gonzalez-Garcia
(
- Sao Paulo, IFT and
- Valencia U.
)
,
S.M. Lietti
(
- Sao Paulo, IFT
)
,
S.F. Novaes
(
- Sao Paulo, IFT
)

Feb, 1998

14 pages

Published in:

Phys.Lett.B 434 (1998) 340-346

e-Print:

hep-ph/9802408 [hep-ph]

DOI:

10.1016/S0370-2693(98)00752-7

Report number:

IFT-P-012-98,
IFIC-98-22,
FTUV-98-22,
MADPH-98-1046

View in:

ADS Abstract Service

reference search33 citations

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Abstract:

We derive bounds on Higgs and gauge--boson anomalous interactions using the LEP2 data on the production of three photons and photon pairs in association with hadrons. In the framework of

SU(2)_L \otimes U(1)_Y

effective Lagrangians, we examine all dimension--six operators that lead to anomalous Higgs interactions involving

\gamma

and

Z

. The search for Higgs boson decaying to

\gamma\gamma

pairs allow us to obtain constrains on these anomalous couplings that are comparable with the ones originating from the analyses of

p\bar{p}

collisions at the Tevatron. Our results also show that if the coefficients of all ``blind'' operators are assumed to have same magnitude, the indirect constraints on the anomalous couplings obtained from this analyses, for Higgs masses

M_H \lesssim

140 GeV, are more restrictive than the ones coming from the

W^+W^-

production.

Note:

14 pages Latex file using RevTeX, 3 figures as .eps files Report-no: IFT--P.012/98,IFIC/98--22, MADPH--98--1046

14.80.Cp
13.85.Qk
electron positron: annihilation
photon: electroproduction
final state: (3photon)
photon: pair production
hadron: associated production
gauge field theory: SU(2) x U(1)
effective Lagrangian: operator
Higgs particle: coupling

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