Search for Doubly-Charged Higgs Boson Production at HERA

A Aktas, Peter Faulkner, Ian Kenyon, Paul Newman, Rachel Shaw-West, Paul Thompson

Research output: Contribution to journalArticle

30 Citations (Scopus)


A search for the single production of doubly-charged Higgs bosons H-+/-+/- in ep collisions is presented. The signal is searched for via the Higgs decays into a high mass pair of same charge leptons, one of them being an electron. The analysis uses up to 118 pb(-1) of ep data collected by the H1 experiment at HERA. No evidence for doubly-charged Higgs production is observed and mass dependent upper limits are derived on the Yukawa couplings h(el) of the Higgs boson to an electron-lepton pair. Assuming that the doubly-charged Higgs only decays into an electron and a muon via a coupling of electromagnetic strength h(e mu) = root 4 pi alpha(em) similar or equal to 0.3, a lower limit of 141 GeV on the H-+/-+/- mass is obtained at the 95% confidence level. For a doubly-charged Higgs decaying only into an electron and a tau and a coupling h(e tau) similar or equal to 0.3, masses below 112 GeV are ruled out. (c) 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)432
Number of pages1
JournalPhysics Letters B
Publication statusPublished - 20 Jul 2006


Dive into the research topics of 'Search for Doubly-Charged Higgs Boson Production at HERA'. Together they form a unique fingerprint.

Cite this