Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons

Details Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons

2006-04-03

arxiv.org/abs/hep-ph/0604011v2

Phys.Rev.D74:013004,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

42 pages, LaTeX, 38 postscript figures, references updated, some typos corrected, version to appear in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.74.013004

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(\alpha) to these processes, including improvements beyond O(\alpha) 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.

Affiliated with

Also associated with

No associations

Rating

Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Precise predictions for the Higgs-boson decay H -> W W/Z Z -> 4 leptons will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-444079