Spin Analysis of Supersymmetric Particles

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dc.creatorChoi, S. Y.
dc.creatorHagiwara, K.
dc.creatorMartyn, H. -U.
dc.creatorMawatari, K.
dc.creatorZerwas, P. M.
dc.date2006-12-22
dc.date.accessioned2026-07-07T11:58:58Z
dc.date.available2026-07-07T11:58:58Z
dc.descriptionThe spin of supersymmetric particles can be determined at $e^+e^-$ colliders unambiguously. This is demonstrated for a characteristic set of non-colored supersymmetric particles -- smuons, selectrons, and charginos/neutralinos. The analysis is based on the threshold behavior of the excitation curves for pair production in $e^+e^-$ collisions, the angular distribution in the production process and decay angular distributions. In the first step we present the observables in the helicity formalism for the supersymmetric particles. Subsequently we confront the results with corresponding analyses of Kaluza-Klein particles in theories of universal extra space dimensions which behave distinctly different from supersymmetric theories. It is shown in the third step that a set of observables can be designed which signal the spin of supersymmetric particles unambiguously without any model assumptions. Finally in the fourth step it is demonstrated that the determination of the spin of supersymmetric particles can be performed experimentally in practice at an $e^+e^-$ collider.
dc.description39 pages, 14 figures
dc.identifierhttps://arxiv.org/abs/hep-ph/0612301
dc.identifierhttp://arxiv.org/abs/hep-ph/0612301
dc.identifierEur.Phys.J.C51:753-774,2007
dc.identifierdoi:10.1140/epjc/s10052-007-0367-7
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/206405
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleSpin Analysis of Supersymmetric Particles
dc.typetext

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