2015/01/18 by Cheng-Wei Chiang, Koji Tsumura · 1 citation
Physics and Astronomy · #Boson #Higgs boson #Higgs mechanism #Large Hadron Collider #Mixing (physics) #Neutrino Physics Research #Parameter space #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #Vacuum expectation value #hep-ph
paper · pdf · doi:10.1007/jhep04(2015)113
21 pages, 32 eps files
arxiv created 2015/01/18 · openalex publication_date 2015/04/01 · openalex created_date 2016/06/24 · arxiv updated 2018/04/04 · openalex updated_date 2026/08/05
The Georgi-Machacek model predicts the existence of four neutral Higgs bosons, one of which can be identified as the 125-GeV Higgs boson. The latest Higgs data favor the parameter space of small mixing angle α between the two custodial singlets of the model. The other two neutral Higgs bosons belong respectively to the custodial triplet and quintet. We study the general decay and production properties of these particles in the small-α scenario. Constraints on the SU(2) L triplet vacuum expectation value are obtained as a function of the exotic Higgs boson masses using latest ATLAS data of various search channels for additional neutral Higgs bosons.