Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-12-09
Nucl.Phys.B670:90-102,2003
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages, 3 figures. Discussion of KK width and cutoff, new LHC figure and references added
Scientific paper
10.1016/j.nuclphysb.2003.07.023
Electroweak precision measurements indicate that the standard model Higgs boson is light and that it could have already been discovered at LEP 2, or might be found at the Tevatron Run 2. In the context of a TeV^-1 size extra dimensional model, we argue that the Higgs boson production rates at LEP and the Tevatron are suppressed, while they might be enhanced at the LHC or at CLIC. This is due to the possible mixing between brane and bulk components of the Higgs boson, that is, the non-trivial brane-bulk `location' of the lightest Higgs. To parametrize this mixing, we consider two Higgs doublets, one confined to the usual space dimensions and the other propagating in the bulk. Calculating the production and decay rates for the lightest Higgs boson, we find that compared to the standard model (SM), the cross section receives a suppression well below but an enhancement close to and above the compactification scale M_c. This impacts the discovery of the lightest (SM like) Higgs boson at colliders. To find a Higgs signal in this model at the Tevatron Run 2 or at the LC with sqrt(s)=1.5 TeV, a higher luminosity would be required than in the SM case. Meanwhile, at the LHC or at CLIC with sqrt(s) ~ 3-5 TeV one might find highly enhanced production rates. This will enable the latter experiments to distinguish between the extra dimensional and the SM for M_c up to about 6 TeV.
Aranda Alfredo
Balazs Csaba
Diaz-Cruz Lorenzo J.
No associations
LandOfFree
Where is the Higgs boson? 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 Where is the Higgs boson?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Where is the Higgs boson? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-74943