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7 papers · 2 filters
Non-thermal Gravitino Dark Matter in Gauge Mediation
Koichi Hamaguchi, Ryuichiro Kitano, Fuminobu Takahashi
We show that gravitinos produced by decays of a supersymmetry breaking scalar field (the pseudo-moduli field) can naturally explain the observed abundance of dark matter in a certa…
Higgsinoless Supersymmetry and Hidden Gravity
Michael L. Graesser, Ryuichiro Kitano, Masafumi Kurachi
We present a simple formulation of non-linear supersymmetry where superfields and partnerless fields can coexist. Using this formalism, we propose a supersymmetric Standard Model w…
Novel reconstruction technique for New Physics processes with initial state radiation
Johan Alwall, Kenji Hiramatsu, Mihoko M. Nojiri +1
At hadron colliders, the production of heavy new particles is associated with additional quarks and gluons with significant transeverse momentum. The additional jets complicates th…
A Model of TeV Scale Physics for Neutrino Mass, Dark Matter and Baryon Asymmetry and its Phenomenology
Mayumi Aoki, Shinya Kanemura, Osamu Seto
We discuss some details for the model proposed in Ref. \cite{aks-prl}, in which neutrino oscillation, dark matter, and baryon asymmetry of the Universe can be simultaneously explai…
Lepton Flavour Violating Decays tau to lll and mu to e gamma in the Higgs Triplet Model
A. G. Akeroyd, Mayumi Aoki, Hiroaki Sugiyama
Singly and doubly charged Higgs bosons in the Higgs Triplet Model mediate the lepton flavour violating (LFV) decays tau to \bar{l}ll and mu to e gamma. The LFV decay rates are prop…
Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
Mayumi Aoki, Shinya Kanemura, Koji Tsumura +1
Possible models of Yukawa interaction are discussed in the two Higgs doublet model (THDM) under the discrete symmetry imposed to avoid the flavor changing neutral current at the le…