Determining Spin through Quantum Azimuthal-Angle Correlations
arXiv:0811.3030 · doi:10.1016/j.physletb.2009.01.034
Abstract
Determining the spin of new particles is critical in identifying the true theory among various extensions of the Standard Model at the next generation of colliders. Quantum interference between different helicity amplitudes was shown to be effective when the final state is fully reconstructible. However, many interesting new physics processes allow only for partial reconstruction. In this paper, we show how the interference effect can be unambiguously extracted even in processes that have two-fold ambiguity, by considering the correlation between two decay planes in e+ e- collisions.
10 pages, 6 figures
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- Stable Colored Particles R-SUSY Relics or Not?
- A New Method for the Spin Determination of Dark Matter
- Reconstructing events with missing transverse momentum at the LHC and its application to spin measurement
- Spin and Chirality Effects in Antler-Topology Processes at High Energy Colliders