Do Weak Interactions Become Strong at 10 TeV ? ”
نویسندگان
چکیده
w Simple model calculations indicate that instanton estimates of high-energy scattering amplitudes are unreliable when the number of final state particles becomes large. This casts doubt on recent claims that the cross section for baryon number violation becomes large at high energy.
منابع مشابه
Weak Interactions in Top-Quark Pair Production at Hadron Colliders: An Update
Weak corrections for top-quark pair production at hadron colliders are revisited. Predictions for collider energies of 8 TeV, adopted to the present LHC run, and for 14 TeV, presumably relevant for the next round of LHC experiments, are presented. Kinematic regions with large momentum transfer are identified, where the corrections become large and may lead to strong distortions of differential ...
متن کامل1 v 1 7 A pr 2 00 0 Electroweak Bloch - Nordsieck violation at the TeV scale : “ strong ” weak interactions ?
Hard processes at the TeV scale exhibit enhanced (double log) EW corrections even for inclusive observables, leading to violation of the Bloch-Nordsieck theorem. This effect, previously related to the non abelian nature of free EW charges in the initial state (ee, ep, pp ...), is here investigated for fermion initiated hard processes and to all orders in EW couplings. We find that the effect is...
متن کامل('0 Supercolor*
We propose new types of theories which combine supersymmetry and some new strong interaction which we generically refer to as supercolor. In some cases which we discuss, supercolor is identical with the familiar Technicolor. These theories are natural. They explain the scale of weak interactions and they do not require any unnatural adjustments. They possess naturally light scalars which give m...
متن کاملStrong Interactions of Weak Bosons
We discuss the parameterization for electroweak gauge boson interactions without a light Higgs boson. We present the constraints on the anomalous gauge-boson couplings from the current experiments. We emphasize that the four-point couplings involving the longitudinal weak bosons are genuine to the underlying strong dynamics responsible for the electroweak symmetry breaking. We study the sensiti...
متن کاملTev Scale Weak Interactions: Inclusive vs. Exclusive Observables
Hard processes at the TeV scale exhibit enhanced (double log) EW corrections, that need resummation in view of the high level of precision of Next Linear Colliders. The fact that the weak sector is spontaneously broken causes some peculiarities with respect to unbroken theories like QCD. For observables that are exclusive with respect to W,Z emission, some peculiar technical problems have yet t...
متن کامل