K±→π∓μ±μ±and doubly charged Higgs bosons

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...

Signatures of Doubly Charged Higgs Bosons in eγ Collisions

We study the discovery potential for doubly charged Higgs bosons, ∆, in the process eγ → eμμ for centre of mass energies appropriate to high energy ee linear colliders and the CLIC proposal. For M∆ < √ seγ discovery is likely for even relatively small values of the Yukawa coupling to leptons. However, even far above threshold, evidence for the ∆ can be seen due to contributions from virtual int...

Limits on doubly charged Higgs bosons and lepton-flavor violation.

Tools for Charged Higgs Bosons

In order to identify the Higgs sector realized in nature, the predictions for Higgs boson masses, production cross sections and decay widths have to be compared with experimental results. We give a brief overview about computer codes for the evaluation of the properties of charged Higgs bosons, mostly focusing on the case of the Minimal Supersymmetric Standard Model (MSSM). We briefly review th...

PROBING LEPTON-NUMBER-VIOLATING COUPLINGS OF DOUBLY-CHARGED HIGGS BOSONS AT AN e e COLLIDER

The doubly charged Higgs bosons ?? that are present in exotic Higgs representations can have lepton-number-violating couplings to e ? e ?. We discuss general constraints and phenomenology for the ?? and demonstrate that extremely small values for the e ? e ? ! ?? coupling-squared (some 8 orders of magnitude smaller than the current limit) would produce observable signals for ?? production in di...