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High Energy Physics - Phenomenology

arXiv:0802.3592 (hep-ph)
[Submitted on 25 Feb 2008 (v1), last revised 16 May 2008 (this version, v2)]

Title:CP observables with spin-spin correlations in chargino production

Authors:A. Bartl, K. Hohenwarter-Sodek, T. Kernreiter, O. Kittel, M. Terwort
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Abstract: We study the CP-violating terms of the spin-spin correlations in chargino production e+e- -> chi^+/-_1 chi^-/+_2, and their subsequent two-body decays into sneutrinos plus leptons. We propose novel CP-sensitive observables with the help of T-odd products of the spin-spin terms. These terms depend on the polarizations of both charginos, with one polarization perpendicular to the production plane. We identify two classes of CP-sensitive observables; one requires the reconstruction of the production plane, the other not. Our framework is the Minimal Supersymmetric Standard Model with complex parameters.
Comments: 21pp; discussion of background processes improved, references added; final version for Nucl. Phys. B
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:0802.3592 [hep-ph]
  (or arXiv:0802.3592v2 [hep-ph] for this version)
  https://doi.org/10.48550/arXiv.0802.3592
Journal reference: Nucl.Phys.B802:77-91,2008
Related DOI: https://doi.org/10.1016/j.nuclphysb.2008.04.031

Submission history

From: Thomas Kernreiter [view email]
[v1] Mon, 25 Feb 2008 11:05:08 UTC (869 KB)
[v2] Fri, 16 May 2008 18:16:04 UTC (870 KB)
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