Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons
| dc.creator | Bredenstein, A. | |
| dc.creator | Denner, A. | |
| dc.creator | Dittmaier, S. | |
| dc.creator | Weber, M. M. | |
| dc.date | 2006-04-03 | |
| dc.date | 2006-07-05 | |
| dc.date.accessioned | 2026-07-07T10:44:57Z | |
| dc.date.available | 2026-07-07T10:44:57Z | |
| dc.description | The decay of the Standard Model Higgs boson into four leptons via a virtual W-boson or Z-boson pair is one of the most important decay modes in the Higgs-boson search at the LHC. We present the complete electroweak radiative corrections of O(α) to these processes, including improvements beyond O(α) originating from heavy-Higgs effects and final-state radiation. The intermediate W- and Z-boson resonances are described (without any expansion or on-shell approximation) by consistently employing complex mass parameters for the gauge bosons (complex-mass scheme). The corrections to partial decay widths typically amount to some per cent and increase with growing Higgs mass M_H, reaching about 8% at M_H \sim 500 GeV. For not too large Higgs masses (M_H <\sim 400 GeV) the corrections to the partial decay widths can be reproduced within <\sim 2% by simple approximations. For angular distributions the corrections are somewhat larger and distort the shapes. For invariant-mass distributions of fermion pairs they can reach several tens of per cent depending on the treatment of photon radiation. The discussed corrections have been implemented in a Monte Carlo event generator called PROPHECY4F. | |
| dc.description | 42 pages, LaTeX, 38 postscript figures, references updated, some typos corrected, version to appear in Phys. Rev. D | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0604011 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0604011 | |
| dc.identifier | Phys.Rev.D74:013004,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.013004 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182775 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons | |
| dc.type | text |