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High Energy Physics - Phenomenology

arXiv:hep-ph/0503116 (hep-ph)
[Submitted on 14 Mar 2005 (v1), last revised 25 Mar 2005 (this version, v2)]

Title:Signals for CP Violation in Split Supersymmetry

Authors:N.G. Deshpande, J. Jiang
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Abstract: Split supersymmetry is characterized by relatively light chargino and neutralino sector and very heavy sfermion sector. We study the consequence of CP violation in this scenario by evaluating two-loop contributions to electric dipole moments of fermions from Higgs-photon as well as $W$-$W$ diagrams. These contributions add coherently and produce electron and neutron electric dipole moments close to present bounds. We then explore Higgs production at a photon-photon collider, and consider the feasibility of measuring CP violating $h\gamma\gamma$ coupling induced by chargino loops. Methods of enhancing the sensitivity are discussed. For lower chargino masses and lower Higgs boson masses, the effect of the CP violation can be observed with 90% confidence level significance.
Comments: 14 pages, 4 figures; typos corrected, version submitted to PLB
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0503116
  (or arXiv:hep-ph/0503116v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0503116
Journal reference: Phys.Lett.B615:111-119,2005
Related DOI: https://doi.org/10.1016/j.physletb.2005.04.015

Submission history

From: Jing Jiang [view email]
[v1] Mon, 14 Mar 2005 20:38:17 UTC (71 KB)
[v2] Fri, 25 Mar 2005 02:39:47 UTC (71 KB)
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