Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-04-24
Nucl.Phys.B821:74-128,2009; Erratum-ibid.824:331-332,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
61 pages, 19 figures, typos corrected, comments added, published version
Scientific paper
10.1016/j.nuclphysb.2009.06.024
We suggest a simple one-Higgs-doublet model living in the bulk of five-dimensional spacetime compactified on $S^1/Z_2$, in which the top Yukawa coupling can be smaller than the naive standard-model expectation, i.e. the top quark mass divided by the Higgs vacuum expectation value. If we find only single Higgs particle at the LHC and also observe the top Yukawa deviation, our scenario becomes a realistic candidate beyond the standard model. The Yukawa deviation comes from the fact that the wave function profile of the free physical Higgs field can become different from that of the vacuum expectation value, due to the presence of the brane-localized Higgs potentials. In the Brane-Localized Fermion scenario, we find sizable top Yukawa deviation, which could be checked at the LHC experiment, with a dominant Higgs production channel being the $WW$ fusion. We also study the Bulk Fermion scenario with brane-localized Higgs potential, which resembles the Universal Extra Dimension model with a stable dark matter candidate. We show that both scenarios are consistent with the current electroweak precision measurements.
Haba Naoyuki
Oda Kin-ya
Takahashi Ryo
No associations
LandOfFree
Top Yukawa Deviation in Extra Dimension 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 Top Yukawa Deviation in Extra Dimension, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Top Yukawa Deviation in Extra Dimension will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-609362