Single Production of Doubly Charged Higgsinos at linear e−e− colliders

ar X iv : 0 81 0 . 52 65 v 1 [ he p - ph ] 2 9 O ct 2 00 8 Signatures for doubly - charged Higgsinos at colliders

Several supersymmetric models with extended gauge structures predict light doubly-charged Higgsinos. Their distinctive signature at the large hadron collider is highlighted by studying their production and decay characteristics.

Doubly Charged Higgsino Pair Production and Decays in ee Collisions

In supersymmetric grand unified theories, light higgsino multiplets generally exist in addition to the familiar chargino/neutralino multiplets of the minimal supersymmetric extension of the Standard Model. The new multiplets may include doubly charged states ∆̃ and δ̃. We study the properties and the production channels of these novel higgsinos in ee and γγ collisions, and investigate how their p...

, eγ AND γγ COLLIDERS

We calculate the cross sections for the single production of doubly-charged dileptons, both scalar and vector, at e + e − , eγ and γγ colliders at √ s = 500 GeV and 1 TeV. The eγ mode is by far the most promising – dileptons whose coupling is as weak as O(10 −4)α em can be observed, for masses virtually up to the kinematic limit. Dileptons of mass up to √ s can also be seen in e + e − and γγ co...

Associated single photons and doubly charged scalar at lin - ear e − e − colliders

Single production of doubly charged Higgs bosons at hadron colliders

We reconsider the single production of the doubly charged Higgs bosons ∆ R and ∆ ++ L at the LHC and TEVATRON in the framework of the left-right symmetric model and the Higgs triplet model. We show that in the left-right symmetric model the production of ∆ R by Drell-Yan process via WR exchange may give the dominant contribution. The same channel for the production of ∆ L in the Higgs triplet m...