| DATE: |
2005-01-25 11:00 - |
| PLACE: |
Kenkyu Honkan, 2nd Floor, Rm 220 |
| TITLE: |
Fine Tuning and Split supersymmetry |
| CONTACT: |
Tango |
| SPEAKER: |
Prof. K. Cheung (Natl. Tsing Hua U, Taiwan) |
| LANGUAGE: |
English |
| ABSTRACT: |
I will summarize a few fine tuning problems in our existing theory.
Then one would ask what if we abandon the fine tuning principle.
Based this argument, Arkani and Dimopoulos proposed a scenario that the
sumpersymmetric scalar particles are all very heavy but the gauginos,
higgsinos, and one of the neutral Higgs bosons remain under
a TeV. The most distinct signature is the metastable gluino.
However, the detection of metastable gluino depends crucially on
the spectrum of hadrons that it fragments into. Instead, here we
propose another unambiguous signature by forming the gluino-gluino bound
state, gluinonium, which will then annihilate into tt and bb pairs.
Other features of the scenario will also be discussed.
Related papers: hep-ph/0408335
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