3,202 research outputs found
Electroweak Interactions: Summary
The session on precision studies of electroweak interactions is summarized.
The contributions address the bilinear, trilinear, quartic as well as
heavy-quark interactions of the electroweak gauge bosons. This makes up a
picture of the physics of electroweak symmetry and symmetry breaking which can
be investigated with the proposed design of e+e- Linear Colliders and
detectors.Comment: 8 pages, no figures, uses aipproc.sty. Contribution to the Linear
Collider Workshop 2000, Fermilab, October 200
Delaunay Ends of Constant Mean Curvature Surfaces
The generalized Weierstrass representation is used to analyze the asymptotic
behavior of a constant mean curvature surface that arises locally from an
ordinary differential equation with a regular singularity.
We prove that a holomorphic perturbation of an ODE that represents a Delaunay
surface generates a constant mean curvature surface which has a properly
immersed end that is asymptotically Delaunay. Furthermore, that end is embedded
if the Delaunay surface is unduloidal
NLO Simulations of Chargino Production at the ILC
We present an extension of the Monte Carlo Event Generator Whizard which
includes chargino production at the ILC at NLO. We present two ways of adding
photonic contributions. We present results for cross sections and event
generation.Comment: 4 pages, to appear in Proceedings of SUSY06, the 14th International
Conference on Supersymmetry and the Unification of Fundamental Interactions,
UC Irvine, California, 12-17 June 200
Simplified Models for New Physics in Vector Boson Scattering - Input for Snowmass 2013
In this contribution to the Snowmass process 2013 (which is a preliminary
version of [1]) we give a brief review of how new physics could enter in the
electroweak (EW) sector of the Standard Model (SM). This new physics, if it is
directly accessible at low energies, can be parameterized by explicit
resonances having certain quantum numbers. The extreme case is the decoupling
limit where those resonances are very heavy and leave only traces in the form
of deviations in the SM couplings. Translations are given into
higher-dimensional operators leading to such deviations. As long as such
resonances are introduced without a UV-complete theory behind it, these models
suffer from unitarity violation of perturbative scattering amplitudes. We show
explicitly how theoretically sane descriptions could be achieved by using a
unitarization prescription that allows a correct description of such a
resonance without specifying a UV-complete model.Comment: A Snowmass White Paper, minor typos, one formula update
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