Testing the Majorana nature of gluinos and neutralinos
- Department of Physics and RIPC, Chonbuk National University, Jeonju 561-756 (Korea, Republic of)
- Physikalisches Inst. der University Bonn, D-53115 Bonn (Germany)
- Department of Physics and Astronomy, University of Pittsburgh, Pennsylvania 15260 (United States)
- Deutsches Elektronen-Synchrotron DESY, D-22603 Hamburg (Germany)
Gluinos and neutralinos, supersymmetric partners of gluons and neutral electroweak gauge and Higgs bosons, are Majorana particles in the minimal supersymmetric standard model (MSSM). Decays of such self-conjugate particles generate charge symmetric ensembles of final states. Moreover, production channels of supersymmetric particles at colliders are characteristically affected by the Majorana nature of particles exchanged in the production processes. The sensitivity to the Majorana character of the particles can be quantified by comparing the predictions with Dirac exchange mechanisms. A consistent framework for introducing gluino and neutralino Dirac fields can be designed by extending the N=1 supersymmetry of the MSSM to N=2 in the gauge sector. We examine to which extent like-sign dilepton production in the processes qq{yields}q-tildeq-tilde and e{sup -}e{sup -}{yields}e-tilde{sup -}e-tilde{sup -} is affected by the exchange of either Majorana or Dirac gluinos and neutralinos, respectively, at the Large Hadron Collider (LHC) and in the prospective e{sup -}e{sup -} mode of a lepton linear collider.
- OSTI ID:
- 21254640
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 78, Issue 9; Other Information: DOI: 10.1103/PhysRevD.78.095007; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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