Kwang Sik Jeong(Pusan National University)
February 15(Wed) - February 15(Wed), 2017
2:00 pm
CTPU Seminar Room, KAIST Munji Campus
* Speaker : Kwang Sik Jeong(Pusan National University)
* Date : 2:00 pm, Feb 15 2017
* Place : CTPU Seminar Room, KAIST Munji Campus
* Title : Light Higgsino for Gauge Coupling Unification
*Abstract : We explore gauge coupling unification and dark matter in high scale supersymmetry where the scale of supersymmetry breaking is much above the weak scale. The gauge couplings unify as precisely as in low energy supersymmetry if the higgsinos, whose mass does not break supersymmetry, are much lighter than those obtaining masses from supersymmetry breaking. The dark matter of the universe can then be explained by the neutral higgsino or the gravitino. High scale supersymmetry with light higgsinos requires a large Higgs mixing parameter for electroweak symmetry breaking to take place. This is naturally realized in models where superparticle masses are generated at loop level while the Higgs mixing parameter is induced at tree level, like in anomaly and gauge mediation of supersymmetry breaking.