Description
Chairperson: Werner POROD
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Mr Tuomas Honkavaara (Helsinki Institute of Physics)30/07/2007, 14:00Colliders - Susy PhenomenologyParallel TalkSneutrino-antisneutrino mixing occurs in a supersymmetric model where neutrinos have nonzero Majorana masses. This can lead to the sneutrino decaying into a final state with a ``wrong-sign charged lepton''. In an $e^- \gamma$ collider, the signal of the associated production of an electron-sneutrino and the lighter chargino and the subsequent decays can be $e^- \gamma \rightarrow...Go to contribution page
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Dr Thomas Kernreiter (University of Vienna)30/07/2007, 14:20Colliders - Susy PhenomenologyParallel TalkWe study the effects of lepton flavour violation (LFV) on the production processes $e^+e^-\to\tilde\chi^+_i\tilde\chi^-_j$ at a linear collider with longitudinal $e^+$ and $e^-$ beam polarizations. In the case of LFV the sneutrino mass eigenstates have no definite flavour, therefore, in the $t-$channel more than one sneutrino mass eigenstate can contribute to the chargino production...Go to contribution page
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Prof. Keisho Hidaka (Tokyo Gakugei University)30/07/2007, 14:40Colliders - Susy PhenomenologyParallel TalkWe perform systematic study of decays of sneutrinos including bosonic decays such as decays into slepton + (W^+ or H^+) as well as fermionic ones in the Minimal Supersymmetric Standard Model (MSSM) with slepton generation mixings and real parameters. We show that the effect of the slepton generation mixings on the branching ratios of the sneutrino decays (both fermionic and bosonic...Go to contribution page
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Mr Sebastian Grab (Physikalisches Institut Bonn)30/07/2007, 15:00Colliders - Susy PhenomenologyParallel TalkWe consider the case where supersymmetry with broken R-parity is embedded in the minimal supergravity model (mSUGRA). This alters the standard mSUGRA spectrum and opens a wide range in parameter space, where the scalar tau is the lightest supersymmetric particle, instead of the lightest neutralino. We study the resulting LHC phenomenology. Promising signatures would be detached vertices...Go to contribution page
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Dr Alexey Gladyshev (Joint Institute for Nuclear Research)30/07/2007, 15:20Colliders - Susy PhenomenologyParallel TalkSpecific regions in the MSSM parameter space are analysed. It is shown that in the narrow band near the co-annihilation region charged sleptons (staus) may be long-lived particles. This region is consistent with the WMAP restrictions on the Dark matter and depends on the value of \tan\beta. Due to a relatively small mass stau production cross-section at LHC may reach a few % pb. In the...Go to contribution page
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Dr Masahiro Ibe (Stanford Linear Accelerator center)30/07/2007, 15:40Colliders - Susy PhenomenologyParallel TalkWe explain that there is a sweet spot in between the gauge and gravity mediated supersymmetry breaking scenario where the theory is perfectly consistent with various requirements. At the sweet spot, all the classic problems, such as the supersymmetric flavor/CP problem and the mu-problem are solved. The observed dark matter can be explained by the gravitino (with mass O(1) GeV)...Go to contribution page