Discriminating spin through quantum interference

Details Discriminating spin through quantum interference Discriminating spin through quantum interference

2007-11-02

arxiv.org/abs/0711.0364v2

Phys.Rev.D78:014028,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 11 figures

Scientific paper

10.1103/PhysRevD.78.014028

Many of the proposed solutions to the hierarchy and naturalness problems postulate new `partner' fields to the standard model particles. Determining the spins of these new particles will be critical in distinguishing among the various possible SM extensions, yet proposed methods rely on the underlying models. We propose a new model-independent method for spin measurements which takes advantage of quantum interference among helicity states. We demonstrate that this method will be able to discriminate scalar particles from higher spin states at the ILC, and discuss application to higher spins and possible uses at the LHC.

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