Chargino decays in the complex MSSM: a full one-loop analysis
We evaluate two-body decay modes of charginos in the Minimal Supersymmetric Standard Model with complex parameters (cMSSM). Assuming heavy scalar quarks we take into account all decay channels involving charginos, neutralinos, (scalar) leptons, Higgs bosons and Standard Model gauge bosons. The evalu...
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| Veröffentlicht in: | The European physical journal. C, Particles and fields Particles and fields, 2012-02, Vol.72 (2), p.1-49, Article 1892 |
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| creator | Heinemeyer, S. von der Pahlen, F. Schappacher, C. |
| description | We evaluate two-body decay modes of charginos in the Minimal Supersymmetric Standard Model with complex parameters (cMSSM). Assuming heavy scalar quarks we take into account all decay channels involving charginos, neutralinos, (scalar) leptons, Higgs bosons and Standard Model gauge bosons. The evaluation of the decay widths is based on a full one-loop calculation including hard and soft QED radiation. Special attention is paid to decays involving the Lightest Supersymmetric Particle (LSP), i.e. the lightest neutralino, or a neutral or charged Higgs boson. The higher-order corrections of the chargino decay widths involving the LSP can easily reach a level of about ±10%, while the corrections to the decays to Higgs bosons are slightly smaller, translating into corrections of similar size in the respective branching ratios. These corrections are important for the correct interpretation of LSP and Higgs production at the LHC and at a future linear
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+
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collider. The results will be implemented into the Fortran code FeynHiggs. |
| doi_str_mv | 10.1140/epjc/s10052-012-1892-6 |
| format | Article |
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| subjects | Analysis Astronomy Astrophysics and Cosmology Bosons Charged particles Elementary Particles Exact sciences and technology Fermions Hadrons Heavy Ions Higgs bosons Large Hadron Collider Leptons Measurement Science and Instrumentation Nuclear Energy Nuclear Physics Nuclear radiation Particle decay Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quarks Regular Article - Theoretical Physics String Theory Supersymmetry The physics of elementary particles and fields |
| title | Chargino decays in the complex MSSM: a full one-loop analysis |
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