Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks

Details Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks

2011-08-04

arxiv.org/abs/1108.1173v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 5 figures; small editorial changes; references added

Scientific paper

We examine loop-mediated effects of new heavy quarks Q=(t',b') on t tbar production at hadron colliders, using a phenomenological model with flavor off-diagonal couplings of charged and neutral scalars phi=(phi^+-,phi^0) to Q. We show that an invariant-mass-dependent asymmetry, in the t tbar center of mass, consistent with those recently reported by the CDF collaboration can be obtained for quark masses around 350-500 GeV, scalar masses of order 100-200 GeV, and modest to strong Yukawa couplings. We further show that this invariant-mass dependence can be used to probe the parameters of the underlying model. The requisite strong interactions suggest a non-perturbative electroweak symmetry breaking mechanism and composite states at the weak scale. A typical prediction of this framework is that the new heavy quarks decay dominantly into t phi final states.

Affiliated with

Also associated with

No associations

Rating

Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks 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 Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Top Pair Forward-Backward Asymmetry from Loops of New Strongly Coupled Quarks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-15110