HEPData Search

Showing 1 of 1 results

Search for anomalous couplings in the Higgs sector at LEP

The L3 collaboration Acciarri, M. ; Achard, P. ; Adriani, O. ; et al.

Phys.Lett.B 489 (2000) 102-114, 2000.

Inspire Record 531571 DOI 10.17182/hepdata.49878

We search for a Higgs particle with anomalous couplings in the e+e- -> H gamma, e+e- -> HZ and e+e- -> He+e- processes with the L3 detector at LEP. We explore the mass range 70GeV < m_H < 170GeV using 176pb^-1 of integrated luminosity at a center-of-mass energy of \sqrt{s} = 189GeV. The Higgs decays H -> bb, H -> gamma gamma and H -> Z gamma are considered in the analysis. No evidence for anomalous Higgs production is found. This is interpreted in terms of limits on the anomalous couplings d, d_B, Delta g_1^Z and Delta kappa_gamma. Limits on the Gamma(H -> gamma gamma) and Gamma(H -> Z gamma) partial widths in the explored Higgs mass range are also obtained.

3 data tables

Table 1

The cross section times BR(HIGGS --> 2GAMMA).

Table 2

The cross section times BR(HIGGS --> BQ BQBAR).

Table 3

The cross section times BR(HIGGS --> Z GAMMA).